/* ═══════════════════════════════════════════════════════════════════════════
   VibeDither Pro — Apple-Esque Design System
   Palette: Pure white, Soft grays (#F5F5F7), Jet black, System Blue
   Radius: 12px, Subtle shadows, Glassmorphism overlays
   ═══════════════════════════════════════════════════════════════════════════ */

/* The font stack below will use system fonts like -apple-system (San Francisco),
   Helvetica, or Arial, which are excellent for UI and similar to Inter. */

:root {
  /* ── Core palette ─────────────────────────────────────────────────────── */
  --bg:           #FFFFFF;
  --bg-panel:     #F5F5F7;
  --bg-panel-alt: #FAFAFA;
  --bg-hover:     #E8E8ED;
  --bg-active:    #D1D1D6;
  --bg-inset:     #EFEFF1;
  --bg-surface:   #FFFFFF;

  --border:       #D1D1D6;
  --border-dim:   #E5E5EA;
  --border-light: #C7C7CC;
  --border-accent:#007AFF;

  --text:         #1D1D1F;
  --text-dim:     #86868B;
  --text-muted:   #AEAEB2;
  --text-bright:  #000000;

  --accent:       #007AFF;
  --accent-dim:   #0056B3;
  --accent-glow:  rgba(0, 122, 255, 0.10);
  --accent-blue:  #007AFF;
  --accent-green: #34C759;
  --accent-red:   #FF3B30;

  /* ── Indicators ───────────────────────────────────────────────────────── */
  --led-on:       #007AFF;
  --led-off:      #D1D1D6;
  --led-green:    #34C759;
  --led-red:      #FF3B30;

  /* ── Typography ───────────────────────────────────────────────────────── */
  --font:         -apple-system, 'SF Pro Display', 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono:    'SF Mono', ui-monospace, 'Inter', 'Menlo', 'Consolas', monospace;

  /* ── Spacing & Radius ─────────────────────────────────────────────────── */
  --radius:       12px;
  --radius-lg:    16px;
  --radius-sm:    8px;
  --gap:          8px;
  --panel-pad:    16px;

  /* ── Shadows ──────────────────────────────────────────────────────────── */
  --shadow-sm:    0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md:    0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg:    0 4px 16px rgba(0, 0, 0, 0.10);
}

/* ── Dark Theme ────────────────────────────────────────────────────────── */

[data-theme="dark"] {
  --bg:           #1C1C1E;
  --bg-panel:     #2C2C2E;
  --bg-panel-alt: #1C1C1E;
  --bg-hover:     #3A3A3C;
  --bg-active:    #48484A;
  --bg-inset:     #000000;
  --bg-surface:   #2C2C2E;

  --border:       #48484A;
  --border-dim:   #3A3A3C;
  --border-light: #545456;
  --border-accent:#0A84FF;

  --text:         #F5F5F7;
  --text-dim:     #98989D;
  --text-muted:   #636366;
  --text-bright:  #FFFFFF;

  --accent:       #0A84FF;
  --accent-dim:   #409CFF;
  --accent-glow:  rgba(10, 132, 255, 0.15);
  --accent-blue:  #0A84FF;
  --accent-green: #30D158;
  --accent-red:   #FF453A;

  --led-on:       #0A84FF;
  --led-off:      #48484A;
  --led-green:    #30D158;
  --led-red:      #FF453A;

  --shadow-sm:    0 1px 4px rgba(0, 0, 0, 0.3);
  --shadow-md:    0 2px 10px rgba(0, 0, 0, 0.4);
  --shadow-lg:    0 4px 20px rgba(0, 0, 0, 0.5);
}

/* ── High Contrast Theme (black / yellow) ──────────────────────────────── */

[data-theme="hc"] {
  --bg:           #000000;
  --bg-panel:     #0D0D00;
  --bg-panel-alt: #000000;
  --bg-hover:     #1A1A00;
  --bg-active:    #2A2A00;
  --bg-inset:     #000000;
  --bg-surface:   #0D0D00;

  --border:       #FFD600;
  --border-dim:   #BFA000;
  --border-light: #FFD600;
  --border-accent:#FFD600;

  --text:         #FFD600;
  --text-dim:     #BFA000;
  --text-muted:   #7A6500;
  --text-bright:  #FFFF00;

  --accent:       #FFD600;
  --accent-dim:   #BFA000;
  --accent-glow:  rgba(255, 214, 0, 0.15);
  --accent-blue:  #FFD600;
  --accent-green: #FFD600;
  --accent-red:   #FF3B30;

  --led-on:       #FFD600;
  --led-off:      #2A2A00;
  --led-green:    #FFD600;
  --led-red:      #FF3B30;

  --shadow-sm:    0 1px 4px rgba(0, 0, 0, 0.9);
  --shadow-md:    0 2px 10px rgba(0, 0, 0, 0.95);
  --shadow-lg:    0 4px 20px rgba(0, 0, 0, 1);
}

/* ── Colorblind Preview Filters ────────────────────────────────────────── */

.cb-protanopia     { filter: url(#cb-protanopia); }
.cb-deuteranopia   { filter: url(#cb-deuteranopia); }
.cb-tritanopia     { filter: url(#cb-tritanopia); }
.cb-achromatopsia  { filter: url(#cb-achromatopsia); }

/* ── Settings Overlay (gear icon inside preview areas) ─────────────────── */

.settings-overlay {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 100;
}

.settings-toggle {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  opacity: 0.35;
  transition: opacity 0.2s ease, background 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.settings-toggle:hover {
  opacity: 1;
  background: var(--bg-hover);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .settings-toggle {
  opacity: 0.6;
}

.settings-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 188px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.settings-menu.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.settings-menu-label {
  display: block;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.settings-menu-row {
  display: flex;
  flex-direction: column;
}

/* ── Theme Toggle (shared by settings overlay) ─────────────────────────── */

.theme-toggle {
  display: flex;
  align-items: center;
  background: var(--bg-panel);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.theme-toggle button {
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.15s ease;
}

.theme-toggle button.active {
  background: var(--accent);
  color: #FFFFFF;
}

.cb-select {
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  padding: 6px 12px;
  background: var(--bg-panel);
  color: var(--text);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2386868B'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.cb-select:focus {
  border-color: var(--accent);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESET & GLOBALS
   ═══════════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body, #root { height: 100%; overflow: hidden; }

body {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent);
  color: #FFFFFF;
}

/* ═══════════════════════════════════════════════════════════════════════════
   HOME SCREEN
   ═══════════════════════════════════════════════════════════════════════════ */

.home {
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 56px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.home-header {
  text-align: center;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.logo-container {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: logoFade 0.6s ease-out;
}

.home-logo {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.08));
}

@keyframes logoFade {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.home-title {
  font-family: var(--font);
  font-size: 3.4rem;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -2px;
  line-height: 1;
}

.home-pro {
  font-weight: 500;
  font-size: 1.1rem;
  vertical-align: super;
  letter-spacing: 0;
  margin-left: 3px;
  color: var(--accent);
}

.home-subtitle {
  font-family: var(--font);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-top: 10px;
  font-weight: 500;
}

.home-version {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-top: 6px;
}

.home-cards {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  z-index: 1;
}

.home-card {
  width: 260px;
  padding: 40px 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.home-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.home-card-icon {
  font-size: 1.6rem;
  color: var(--accent);
  line-height: 1;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius);
}

.home-card-title {
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: 0.5px;
}

.home-card-desc {
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TOP PROGRESS BAR
   ═══════════════════════════════════════════════════════════════════════════ */

.progress-bar-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--border-dim);
  z-index: 100;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #5AC8FA);
  transition: width 0.2s ease-out;
}

.progress-bar-fill.indeterminate {
  width: 30% !important;
  animation: indeterminate-slide 1.2s ease-in-out infinite;
}

@keyframes indeterminate-slide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STUDIO LAYOUT
   ═══════════════════════════════════════════════════════════════════════════ */

.studio {
  display: flex;
  height: 100vh;
  width: 100vw;
  position: relative;
  background: var(--bg);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════════════════════ */

.sidebar {
  width: 304px;
  min-width: 304px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border-dim);
  display: flex;
  flex-direction: column;
  order: 1;
  overflow-y: auto;
}

.sidebar-header {
  display: grid;
  grid-template-columns: 28px 1fr 28px;
  align-items: center;
  gap: 4px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border-dim);
  background: var(--bg-surface);
  flex-shrink: 0;
}

.studio-logo-container {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}

.studio-logo {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.06));
}

.sidebar-header > h1 {
  margin: 0;
  padding: 0;
  grid-column: 2;
  text-align: center;
}

.sidebar-title {
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.3px;
  line-height: 1.1;
  white-space: nowrap;
}

.sidebar-title .pro {
  font-weight: 500;
  font-size: 0.55rem;
  vertical-align: super;
  margin-left: 1px;
  color: var(--accent);
}

.sidebar-tagline {
  font-family: var(--font);
  font-size: 0.48rem;
  color: var(--text-dim);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 0;
  font-weight: 500;
}

.sidebar-controls {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
}

.sidebar-footer {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-dim);
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--bg-surface);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SECTION
   ═══════════════════════════════════════════════════════════════════════════ */

.section {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-dim);
}

.section-title {
  font-family: var(--font);
  font-size: 0.58rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding-left: 8px;
  border-left: 2px solid var(--accent);
}

/* ═══════════════════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════════════════ */

.btn {
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 8px 14px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text);
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.34, 1.56, 0.64, 1),
              transform 0.12s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-align: center;
  border-radius: var(--radius-sm);
  position: relative;
}

.btn:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: scale(0.96) translateY(0);
  background: var(--bg-active);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-back {
  width: 28px;
  height: 28px;
  padding: 0;
  font-size: 0.8rem;
  flex-shrink: 0;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  border-radius: 50%;
  border: 1px solid transparent;
  transition: all 0.16s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.btn-back:hover {
  background: var(--bg-hover);
  border-color: var(--border);
  transform: none;
  opacity: 0.8;
}

.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.16);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.28);
  transform: translateY(-2px);
}

.btn-export {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 10px rgba(0, 122, 255, 0.22);
}

.btn-export:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.35);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.65rem;
  flex: 1;
  border-radius: var(--radius-sm);
  transition: all 0.16s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-sm:hover:not(:disabled):not(.active) {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.btn-sm.active {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.12);
  font-weight: 600;
  transition: all 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-sm.active:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.18);
}

.full-width { width: 100%; }

/* ── Help Button ─────────────────────────────────────────────────────── */

.btn-help {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 50%;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-dim);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.16s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.2s ease;
}

.btn-help:hover:not(.active) {
  background: var(--bg-hover);
  border-color: var(--border-light);
  transform: scale(1.08);
}

.btn-help.active {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.12);
  transform: scale(1.05);
}

.btn-help.active:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.18);
  transform: scale(1.1);
}

/* ── Exit Confirm ───────────────────────────────────────────────────────── */

.exit-confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 10001;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  animation: fadeIn 0.15s ease;
}

.exit-confirm-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  max-width: 320px;
  width: 90%;
  animation: slideDown 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.exit-confirm-msg {
  font-size: 0.75rem;
  color: var(--text-bright);
  margin: 0 0 16px;
  line-height: 1.5;
  text-align: center;
}

.exit-confirm-btns {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.exit-confirm-btns .btn {
  flex: 1;
  max-width: 120px;
}

.btn-danger {
  background: #FF3B30;
  color: #FFFFFF;
  border-color: #FF3B30;
  font-weight: 600;
}

.btn-danger:hover {
  background: #E0352B;
  border-color: #E0352B;
}

/* ── Guided Tour ────────────────────────────────────────────────────────── */

.tour-popup {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg-panel);
  border-bottom: 2px solid var(--accent);
  padding: 12px 14px 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.13);
  animation: tourSlideDown 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-shrink: 0;
}

@keyframes tourSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tour-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.tour-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-bright);
}

.tour-step {
  font-size: 0.55rem;
  color: var(--text-dim);
  font-weight: 500;
}

.tour-desc {
  font-size: 0.65rem;
  color: var(--text);
  line-height: 1.55;
  margin-bottom: 10px;
}

.tour-btns {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.tour-highlight {
  outline: 2px solid var(--accent) !important;
  outline-offset: 2px;
  border-radius: var(--radius-sm);
  position: relative;
  z-index: 1;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TOGGLE GROUP
   ═══════════════════════════════════════════════════════════════════════════ */

.toggle-group {
  display: flex;
  gap: 0;
  background: var(--bg-inset);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.toggle-group .btn-sm {
  border: none;
  background: transparent;
  color: var(--text-dim);
  border-radius: 6px;
  margin-left: 0;
  transition: all 0.15s ease;
}

.toggle-group .btn-sm:first-child { margin-left: 0; }

.toggle-group .btn-sm:hover:not(:disabled):not(.active) {
  color: var(--text);
  background: rgba(0, 0, 0, 0.03);
}

.toggle-group .btn-sm.active {
  background: var(--bg-surface);
  color: var(--text-bright);
  box-shadow: var(--shadow-sm);
  border: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONTROL ROW
   ═══════════════════════════════════════════════════════════════════════════ */

.control-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.control-row:last-child { margin-bottom: 0; }

.control-row .label {
  font-family: var(--font);
  font-size: 0.64rem;
  color: var(--text-dim);
  font-weight: 500;
  min-width: 78px;
  flex-shrink: 0;
}

.control-row .value {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text);
  font-weight: 600;
  min-width: 36px;
  text-align: right;
  flex-shrink: 0;
}

.control-row .value.mono {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: -0.02em;
}

/* Select dropdown control (DitherXtone style) */
.select-control {
  flex: 1;
  min-width: 0;
  height: 26px;
  padding: 0 6px;
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8'%3E%3Cpath d='M0 2l4 4 4-4z' fill='%23999'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
  padding-right: 20px;
}

.select-control:focus {
  outline: none;
  border-color: var(--accent);
}

/* Color swatch input */
.color-input {
  width: 32px;
  height: 24px;
  border: none;
  padding: 0;
  cursor: pointer;
  border-radius: 6px;
  flex-shrink: 0;
}

.checkbox-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.65rem;
  color: var(--text);
  font-weight: 500;
}

.checkbox-row input[type='checkbox'] {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--accent);
  border-radius: 4px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RANGE SLIDER
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Range Slider — premium micro-interactions ───────────────────── */

/*
  Track fill uses the CSS variable --sf (set by initializeSliderFill() in JS).
  KEY PERFORMANCE RULE:
    • The `background` transition runs ONLY when idle (hover, release).
    • During drag the JS adds .sf-drag which kills transition entirely →
      thumb and fill track the mouse 1:1 at 60fps with zero visual lag.
*/

input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  outline: none;
  flex: 1;
  border-radius: 2px;
  cursor: pointer;

  /* --sf is updated by initializeSliderFill(); defaults to 0% */
  --sf: 0%;
  background: linear-gradient(to right,
    var(--accent) 0%,
    var(--accent) var(--sf),
    var(--border-dim) var(--sf),
    var(--border-dim) 100%);

  /* Idle transition — smooth hover colour change, no thumb-position jank */
  transition: background 0.22s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* DRAG ACTIVE — zero transition so fill tracks cursor without any delay.
   contain: layout style prevents gradient repaints from triggering
   layout recalculation on parent/sibling elements. */
input[type='range'].sf-drag {
  transition: none !important;
  contain: layout style;
}
input[type='range'].sf-drag::-webkit-slider-thumb {
  transition: none !important;
}
input[type='range'].sf-drag::-moz-range-thumb {
  transition: none !important;
}

/* Hover (idle only) — brighten the track */
input[type='range']:not(.sf-drag):hover {
  background: linear-gradient(to right,
    var(--accent-blue) 0%,
    var(--accent-blue) var(--sf),
    var(--border) var(--sf),
    var(--border) 100%);
}

/* ── WebKit thumb (Chrome, Safari, Edge) ─────────────────────────── */
input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--bg-surface);
  cursor: grab;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  box-shadow: 0 1px 4px rgba(0,0,0,0.12);

  /* Only transform and visual props animate — NOT position/layout */
  transition:
    transform  0.15s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.2s  ease,
    background 0.18s ease,
    border-color 0.18s ease;
}

input[type='range']::-webkit-slider-thumb:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,122,255,0.14),
              0 2px 8px rgba(0,0,0,0.14);
  transform: scale(1.15);
}

input[type='range']::-webkit-slider-thumb:active,
input[type='range'].sf-drag::-webkit-slider-thumb {
  cursor: grabbing;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 5px rgba(0,122,255,0.18),
              0 2px 12px rgba(0,122,255,0.3);
  /* Spring-like pop on grab */
  transform: scale(1.25);
  transition:
    transform  0.12s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    box-shadow 0.15s ease,
    background 0.12s ease,
    border-color 0.12s ease;
}

/* ── Firefox thumb ───────────────────────────────────────────────── */
input[type='range']::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border);
  background: var(--bg-surface);
  cursor: grab;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.12);
  transition:
    transform  0.15s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.2s  ease,
    background 0.18s ease,
    border-color 0.18s ease;
}

input[type='range']::-moz-range-thumb:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,122,255,0.14),
              0 2px 8px rgba(0,0,0,0.14);
  transform: scale(1.15);
}

input[type='range']::-moz-range-thumb:active {
  cursor: grabbing;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 5px rgba(0,122,255,0.18),
              0 2px 12px rgba(0,122,255,0.3);
  transform: scale(1.25);
}

/* Firefox track helpers */
input[type='range']::-moz-range-track {
  background: transparent;
  border: none;
}
input[type='range']::-moz-range-progress {
  background: var(--accent);
  border-radius: 2px;
  height: 4px;
}

/* ── Automation-tracked sliders (red accent) ─────────────────────── */
input[type='range'].automation-slider {
  --sf: 0%;
  background: linear-gradient(to right,
    #FF3B30 0%, #FF3B30 var(--sf),
    var(--border-dim) var(--sf), var(--border-dim) 100%);
  transition: background 0.22s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
input[type='range'].automation-slider.sf-drag {
  transition: none !important;
}
input[type='range'].automation-slider:not(.sf-drag):hover {
  background: linear-gradient(to right,
    #FF4545 0%, #FF4545 var(--sf),
    var(--border) var(--sf), var(--border) 100%);
}
input[type='range'].automation-slider::-webkit-slider-thumb {
  background: #FF3B30;
  border-color: rgba(255,59,48,0.6);
}
input[type='range'].automation-slider::-webkit-slider-thumb:hover {
  background: #FF3B30;
  border-color: #FF3B30;
  box-shadow: 0 0 0 3px rgba(255,59,48,0.18),
              0 2px 8px rgba(255,59,48,0.2);
}
input[type='range'].automation-slider::-webkit-slider-thumb:active,
input[type='range'].automation-slider.sf-drag::-webkit-slider-thumb {
  background: #FF3B30;
  border-color: #FF3B30;
  box-shadow: 0 0 0 5px rgba(255,59,48,0.2),
              0 2px 12px rgba(255,59,48,0.3);
}
input[type='range'].automation-slider::-moz-range-thumb {
  background: #FF3B30;
  border-color: rgba(255,59,48,0.6);
}
input[type='range'].automation-slider::-moz-range-progress {
  background: #FF3B30;
}

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER MANAGER
   ═══════════════════════════════════════════════════════════════════════════ */

.layer-manager {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.layer-manager-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-add-layer {
  font-size: 0.6rem !important;
  padding: 4px 10px !important;
  color: var(--accent) !important;
  border-color: var(--accent) !important;
  border-radius: var(--radius-sm) !important;
}

.layer-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 40vh;
  overflow-y: auto;
}

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER PANEL
   ═══════════════════════════════════════════════════════════════════════════ */

.layer-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-sm);
}

.layer-panel-header {
  display: flex;
  align-items: center;
  gap: 6px;
}

.layer-ink-swatch {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
  flex-shrink: 0;
  cursor: pointer;
}

.layer-hex-input {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 4px 6px;
  width: 64px;
  background: var(--bg-inset);
  color: var(--text);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  outline: none;
}

.layer-hex-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.layer-z-controls {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.btn-z, .btn-vis, .btn-del {
  padding: 3px 6px !important;
  font-size: 0.65rem !important;
  flex: none !important;
  min-width: 22px;
  line-height: 1;
  border-radius: 6px !important;
}

.btn-del:hover:not(:disabled) {
  border-color: var(--accent-red) !important;
  color: var(--accent-red) !important;
}

.layer-controls {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.layer-control-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.layer-control-row .label {
  font-family: var(--font);
  font-size: 0.55rem;
  color: var(--text-dim);
  font-weight: 500;
  min-width: 48px;
  flex-shrink: 0;
}

.layer-control-row input[type='range'] { flex: 1; height: 3px; }

.layer-control-row .value {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text);
  font-weight: 600;
  min-width: 28px;
  text-align: right;
  flex-shrink: 0;
}

.layer-shape-row .toggle-group {
  display: flex;
  gap: 2px;
  flex: 1;
}

.layer-shape-row .toggle-group .btn {
  flex: 1;
  font-size: 0.55rem;
  padding: 2px 0;
  min-width: 0;
  text-align: center;
}

/* Per-layer ASCII controls */
.layer-ascii-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 2px;
  padding: 4px 0 2px 0;
  border-top: 1px solid var(--border);
}

.layer-ascii-section .layer-control-row {
  gap: 6px;
}

.layer-ascii-chars-input,
.layer-ascii-phrase-input {
  flex: 1;
  font-size: 0.6rem;
  height: 22px;
  padding: 0 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
  color: var(--fg-primary);
  min-width: 0;
}

.layer-ascii-chars-input {
  font-family: 'Courier New', monospace;
}

.layer-ascii-chars-input::placeholder,
.layer-ascii-phrase-input::placeholder {
  color: var(--fg-secondary);
  opacity: 0.5;
}

.layer-ascii-font-select {
  flex: 1;
  min-width: 0;
  height: 22px;
  padding: 0 4px;
  font-size: 0.55rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
  color: var(--fg-primary);
}

/* ═══════════════════════════════════════════════════════════════════════════
   COLOR PICKER
   ═══════════════════════════════════════════════════════════════════════════ */

.color-picker {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
}

.color-picker-inputs {
  display: flex;
  gap: 8px;
  align-items: center;
}

.color-swatch-preview {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.color-hex {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px 8px;
  background: var(--bg-inset);
  color: var(--text);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  outline: none;
}

.color-hex:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.color-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.preset-swatch {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  transition: all 0.15s ease;
}

.preset-swatch:hover {
  transform: scale(1.2);
  z-index: 1;
  border-color: var(--text);
  box-shadow: var(--shadow-sm);
}

.preset-swatch.active {
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   VIEWPORT
   ═══════════════════════════════════════════════════════════════════════════ */

.viewport {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 5vh;
  overflow: auto;
  background: var(--bg-inset);
  position: relative;
  order: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   DATA READOUT
   ═══════════════════════════════════════════════════════════════════════════ */

.data-readout {
  position: absolute;
  bottom: 12px;
  left: 14px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  z-index: 10;
  pointer-events: none;
}

.data-readout-item {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  padding: 2px 8px;
  border-radius: 6px;
}

.data-readout-item .data-label {
  color: var(--text-dim);
}

.data-readout-item .data-value {
  color: var(--text);
  font-weight: 600;
}

.data-readout-item .data-led {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--led-off);
  display: inline-block;
}

.data-readout-item .data-led.on {
  background: var(--led-green);
}

.data-readout .fx-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 122, 255, 0.2);
  border-radius: 6px;
  padding: 2px 8px;
  pointer-events: auto;
  cursor: default;
}

.data-readout .fx-badge .fx-name {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.55rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   FX SELECTOR PANEL
   ═══════════════════════════════════════════════════════════════════════════ */

.fx-selector {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.fx-category-label {
  font-family: var(--font);
  font-size: 0.52rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 600;
}

.fx-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.fx-chip {
  font-family: var(--font);
  font-size: 0.55rem;
  padding: 6px 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.fx-chip:hover {
  border-color: var(--accent);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.fx-chip.active {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
}

.fx-chip .fx-chip-icon {
  font-size: 0.85rem;
  line-height: 1;
}

.fx-chip .fx-chip-name {
  font-size: 0.45rem;
  letter-spacing: 0.3px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   DROPZONE
   ═══════════════════════════════════════════════════════════════════════════ */

.dropzone {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1;
}

.dropzone-inner {
  text-align: center;
  padding: 60px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.25s ease;
}

.dropzone:hover .dropzone-inner {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.dropzone-icon {
  font-size: 2rem;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

.dropzone p {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
}

.dim { color: var(--text-dim); font-size: 0.75em; }

/* ═══════════════════════════════════════════════════════════════════════════
   CANVAS
   ═══════════════════════════════════════════════════════════════════════════ */

.canvas-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 2px;
  max-width: 100%;
  max-height: 100%;
  padding: 20px;
  position: relative;
  z-index: 1;
}

.canvas-container.view-split {
  gap: 4px;
}

.canvas-container.view-split .canvas-panel {
  flex: 1;
}

.canvas-panel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex: 1;
  min-width: 0;
}

.canvas-panel canvas {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

/* Ensure canvas fills available space while maintaining aspect ratio */
.image-canvas {
  max-width: calc(100vw - 340px);
  max-height: calc(100vh - 80px);
}

.view-split .canvas-panel canvas { 
  max-height: calc(100vh - 80px); 
}

.view-split .image-canvas {
  max-width: calc(50vw - 200px);
}

.canvas-label {
  position: absolute;
  top: 8px;
  left: 8px;
  font-family: var(--font);
  font-size: 0.55rem;
  font-weight: 600;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  padding: 3px 10px;
  border-radius: 6px;
  z-index: 2;
}

/* ═══════════════════════════════════════════════════════════════════════════
   VIDEO CONTROLS
   ═══════════════════════════════════════════════════════════════════════════ */

.preview-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: calc(100vw - 340px);
  padding: 0 0 24px 0;
  gap: 16px;
  z-index: 1;
}

/* Video preview canvas - fits available space with aspect ratio */
.video-preview-canvas {
  max-width: calc(100vw - 340px);
  max-height: calc(100vh - 320px);
  width: auto !important;
  height: auto !important;
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  background: #111;
}

.video-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-surface);
  padding: 8px 16px;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  width: 100%;
  max-width: calc(100vw - 340px);
  box-shadow: var(--shadow-sm);
}

/* ── A/B Compare ─────────────────────────────────────────────────── */

/* Tight wrapper around the preview canvas so the split overlay fits it */
.canvas-wrapper {
  position: relative;
  display: inline-flex;
  align-items: stretch;
  justify-content: center;
  line-height: 0;           /* kills ghost space below the canvas */
}

/* Transparent layer over the canvas; pointer-events only on the handle */
.split-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  border-radius: var(--radius);
  overflow: hidden;
}

/* Draggable vertical handle — the hit-target is wider than the visual line */
.split-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 44px;
  transform: translateX(-50%);
  cursor: ew-resize;
  pointer-events: all;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* The thin white dividing line */
.split-handle::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.35);
}

/* Circular grip icon in the centre of the line */
.split-handle-grip {
  position: relative;
  z-index: 1;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: 1.5px solid rgba(0, 0, 0, 0.18);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #1D1D1F;
  user-select: none;
  transition: transform 0.1s ease;
}
.split-handle:active .split-handle-grip {
  transform: scale(0.92);
}

/* A|B toggle button in the controls bar */
.ab-btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  transition: all 0.18s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.2s ease;
}
.ab-btn:hover:not(.active) {
  background: var(--bg-hover) !important;
  border-color: var(--border-light) !important;
  transform: translateY(-1px);
}
.ab-btn.active {
  background: var(--accent) !important;
  color: #fff !important;
  border-color: var(--accent-dim) !important;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.28) !important;
  transform: translateY(-2px);
}
.ab-btn.active:hover {
  background: var(--accent-dim) !important;
  box-shadow: 0 6px 16px rgba(0, 122, 255, 0.35) !important;
}

.btn-play {
  padding: 6px 14px !important;
  font-size: 0.8rem !important;
  flex-shrink: 0;
  color: var(--accent) !important;
}

.video-timeline {
  flex: 1;
  height: 4px !important;
}

.time-display {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 70px;
  text-align: right;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RENDER STATUS
   ═══════════════════════════════════════════════════════════════════════════ */

.render-status {
  text-align: center;
  max-width: 500px;
  padding: 40px;
  z-index: 1;
}

.render-stage {
  font-family: var(--font);
  font-size: 0.8rem;
  color: var(--text);
  margin-bottom: 20px;
  font-weight: 500;
}

.render-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border-dim);
  overflow: hidden;
  border-radius: 3px;
}

.render-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #5AC8FA);
  transition: width 0.2s ease-out;
  border-radius: 3px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RENDER SETUP
   ═══════════════════════════════════════════════════════════════════════════ */

.render-setup {
  text-align: center;
  max-width: 420px;
  padding: 40px;
  z-index: 1;
}

.render-setup h3 {
  font-family: var(--font);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.render-info {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 24px;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-dim);
  background: var(--bg-surface);
}

.info-row:last-child { border-bottom: none; }

.info-row .label {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-weight: 500;
}

.info-row .value {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-bright);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RENDER DONE
   ═══════════════════════════════════════════════════════════════════════════ */

.render-done {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px;
  width: 100%;
  z-index: 1;
}

.render-done h3 {
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

.render-done video {
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

/* ═══════════════════════════════════════════════════════════════════════════
   FX INTENSITY METER
   ═══════════════════════════════════════════════════════════════════════════ */

.fx-meter {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}

.fx-meter-label {
  font-family: var(--font);
  font-size: 0.55rem;
  color: var(--text-dim);
  font-weight: 500;
  min-width: 48px;
  flex-shrink: 0;
}

.fx-meter-bar {
  flex: 1;
  height: 4px;
  background: var(--border-dim);
  border-radius: 2px;
  overflow: hidden;
}

.fx-meter-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.15s ease;
}

.fx-meter-value {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text);
  font-weight: 600;
  min-width: 28px;
  text-align: right;
}

/* ═══════════════════════════════════════════════════════════════════════════
   SCROLLBAR
   ═══════════════════════════════════════════════════════════════════════════ */

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════════════════════ */

@keyframes progress-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   L2INTENT DEVELOPER BRANDING
   ═══════════════════════════════════════════════════════════════════════════ */

.home-developer {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 1;
}

.dev-brand {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 6px;
  color: var(--text-muted);
  text-transform: uppercase;
  opacity: 0.55;
  transition: opacity 0.3s ease;
}

.dev-brand:hover {
  opacity: 1;
  color: var(--text-dim);
}

.dev-name {
  font-family: var(--font);
  font-size: 0.5rem;
  font-weight: 400;
  color: var(--text-muted);
  opacity: 0.35;
  display: block;
  margin-top: 4px;
}

.dev-brand-footer {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--text-muted);
  text-transform: uppercase;
  opacity: 0.4;
  margin-top: 2px;
  transition: opacity 0.3s ease;
}

.sidebar-footer:hover .dev-brand-footer {
  opacity: 0.8;
}

/* ═══════════════════════════════════════════════════════════════════════════
   FX SEQUENCER PANEL
   ═══════════════════════════════════════════════════════════════════════════ */

.fx-sequencer {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fx-seq-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fx-seq-title {
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text);
  flex: 1;
}

.fx-seq-count {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--accent);
  font-weight: 600;
}

.btn-add-fx {
  font-size: 0.6rem !important;
  padding: 4px 12px !important;
  color: var(--accent) !important;
  border-color: var(--accent) !important;
  flex: none !important;
  border-radius: var(--radius-sm) !important;
}

.btn-add-fx:hover:not(:disabled) {
  background: var(--accent) !important;
  color: #FFFFFF !important;
}

.fx-seq-empty {
  padding: 16px 0;
  text-align: center;
}

.fx-seq-empty .dim {
  font-size: 0.65rem;
}

.fx-seq-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 50vh;
  overflow-y: auto;
}

/* ── FX Block ───────────────────────────────────────────────────────────── */

.fx-block {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.fx-block.live {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow), var(--shadow-sm);
}

.fx-block.disabled {
  opacity: 0.4;
}

.fx-block-header {
  display: flex;
  align-items: center;
  gap: 6px;
}

.fx-block-index {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 700;
  color: var(--text-muted);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

.fx-block-type {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--bg-inset);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  cursor: pointer;
  flex: 1;
  min-width: 0;
  transition: all 0.15s;
  font-family: var(--font);
}

.fx-block-type:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.fx-block-icon {
  font-size: 0.75rem;
  line-height: 1;
  flex-shrink: 0;
}

.fx-block-name {
  font-size: 0.55rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fx-block-meter {
  width: 28px;
  height: 4px;
  background: var(--border-dim);
  border-radius: 2px;
  overflow: hidden;
  flex-shrink: 0;
}

.fx-block-meter-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.1s ease;
  border-radius: 2px;
}

.fx-block-toggle,
.fx-block-remove {
  flex: none !important;
  padding: 3px 6px !important;
  font-size: 0.65rem !important;
  min-width: 20px;
  line-height: 1;
  border-radius: 6px !important;
}

.fx-block-toggle.on {
  color: var(--accent) !important;
}

.fx-block-toggle.off {
  color: var(--text-muted) !important;
}

.fx-block-remove:hover:not(:disabled) {
  border-color: var(--accent-red) !important;
  color: var(--accent-red) !important;
}

/* ── FX Block Type Picker ───────────────────────────────────────────────── */

.fx-block-picker {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  padding: 8px;
  max-height: 200px;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}

.fx-block-picker-cat {
  margin-bottom: 8px;
}

.fx-block-picker-cat:last-child {
  margin-bottom: 0;
}

.fx-block-picker-label {
  font-family: var(--font);
  font-size: 0.48rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 600;
}

.fx-block-picker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
}

/* ── FX Block Controls ──────────────────────────────────────────────────── */

.fx-block-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.fx-block-trigger {
  display: flex;
  gap: 0;
  flex-shrink: 0;
  background: var(--bg-inset);
  border-radius: 6px;
  padding: 1px;
}

.fx-trig-btn {
  padding: 3px 6px !important;
  font-size: 0.6rem !important;
  border-radius: 5px !important;
  border: none !important;
  background: transparent !important;
  color: var(--text-dim) !important;
  margin-left: 0 !important;
  flex: none !important;
  transition: all 0.12s !important;
}

.fx-trig-btn:first-child { margin-left: 0; }

.fx-trig-btn.active {
  background: var(--bg-surface) !important;
  color: var(--accent) !important;
  box-shadow: var(--shadow-sm) !important;
}

.fx-manual-btn {
  padding: 3px 8px !important;
  font-size: 0.55rem !important;
  flex: none !important;
  border-radius: 6px !important;
}

.fx-manual-btn.active {
  background: var(--accent-green) !important;
  color: #FFFFFF !important;
  border-color: var(--accent-green) !important;
}

.fx-block-intensity {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.fx-intensity-slider {
  flex: 1;
  height: 3px !important;
}

.fx-intensity-val {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: var(--text);
  font-weight: 600;
  min-width: 26px;
  text-align: right;
  flex-shrink: 0;
}

.fx-block-order {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.fx-block-order .btn {
  padding: 3px 5px !important;
  font-size: 0.55rem !important;
  flex: none !important;
  min-width: 18px;
  line-height: 1;
  border-radius: 6px !important;
}

.btn-xs {
  padding: 3px 6px !important;
  font-size: 0.55rem !important;
  flex: none !important;
  border-radius: 6px !important;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TIMELINE
   ═══════════════════════════════════════════════════════════════════════════ */

.timeline {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
}



.timeline-bar {
  width: 200%;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.timeline {
  width: 100%;
}

.timeline-bar canvas {
  display: block;
  border-radius: var(--radius);
}

.timeline-info {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-dim);
}

.timeline-time {
  color: var(--text);
  font-weight: 600;
}

.timeline-sep {
  color: var(--text-muted);
}

.timeline-duration {
  color: var(--text-dim);
}

.timeline-peaks-count {
  margin-left: auto;
  color: var(--accent);
  font-weight: 600;
}

/* ── Viewport with timeline adjustment ────────────────────────────────── */

.viewport-with-timeline .preview-container {
  padding-bottom: 12px;
}

.viewport-with-timeline .preview-container .timeline {
  padding: 0 24px;
}

.viewport-with-timeline .video-controls {
  min-width: auto;
  padding: 6px 12px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TIMELINE MANAGER (Multi-Track)
   ═══════════════════════════════════════════════════════════════════════════ */

.timeline-container {
  width: 100%;
  max-width: calc(100vw - 340px);
  display: flex;
  align-items: stretch;
  justify-content: stretch;
}

.timeline-manager {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.timeline-manager-canvas {
  display: block;
  cursor: default;
}

.timeline-manager-info {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  padding: 6px 12px;
  border-top: 1px solid var(--border-dim);
}

.timeline-track-count {
  margin-left: 8px;
  font-size: 0.55rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════════════════════════════
   HELP TOOLTIP
   ═══════════════════════════════════════════════════════════════════════════ */

.help-tooltip {
  animation: help-tooltip-in 0.15s ease-out;
}

@keyframes help-tooltip-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   HELP MODE INTERACTION
   ═══════════════════════════════════════════════════════════════════════════ */

.help-active .sidebar .section[data-help] {
  cursor: help;
  transition: all 0.15s ease;
  border-radius: var(--radius-sm);
  position: relative;
}

.help-active .sidebar .section[data-help]:hover {
  background: var(--accent-glow);
  box-shadow: inset 0 0 0 1px rgba(0, 122, 255, 0.25);
}

.help-active .sidebar .section[data-help]:hover::after {
  content: '?';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 18px;
  height: 18px;
  background: var(--accent);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-weight: 700;
  pointer-events: none;
}

.help-active .sidebar .section[data-help]:active {
  background: rgba(0, 122, 255, 0.12);
}

/* ═══════════════════════════════════════════════════════════════════════════
   Automation System
   ═══════════════════════════════════════════════════════════════════════════ */

.automation-section {
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 8px;
}

.automation-rec-idle {
  background: var(--bg-inset) !important;
  color: var(--text) !important;
  border: 1px solid var(--border) !important;
  transition: all 0.15s ease;
}

.automation-rec-idle:hover {
  background: var(--bg-hover) !important;
}

.automation-rec-active {
  background: #FF3B30 !important;
  color: #FFFFFF !important;
  border: 1px solid #FF3B30 !important;
  animation: automation-pulse 1.2s ease-in-out infinite;
}

@keyframes automation-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

.automation-param-row {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px 0;
}

.automation-param-name {
  font-family: var(--font-mono);
}

/* Slider row with automation data */
.control-row.automation-active {
  background: rgba(255, 59, 48, 0.06);
  border-radius: 4px;
  padding: 2px 4px;
  margin: -2px -4px;
}

.control-row.automation-active .label {
  color: #FF3B30;
}

.automation-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #FF3B30;
  border-radius: 50%;
  margin-left: 4px;
  vertical-align: middle;
  animation: automation-dot-blink 2s ease-in-out infinite;
}

@keyframes automation-dot-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   Volume Envelope Sidebar Controls
   ═══════════════════════════════════════════════════════════════════════════ */

kbd {
  display: inline-block;
  padding: 2px 5px;
  background: #F5F5F7;
  border: 1px solid #E5E5EA;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #1D1D1F;
  line-height: 1;
}

.section kbd {
  background: rgba(255, 149, 0, 0.1);
  border-color: rgba(255, 149, 0, 0.3);
  color: #FF9500;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Lazo Selection Tool
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── 3-Step Guide ───────────────────────────────────────────────────────────── */

.lazo-steps {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 6px 0 4px;
  flex-wrap: nowrap;
  overflow: hidden;
}

.lazo-step {
  font-size: 0.58rem;
  font-weight: 600;
  color: var(--text-dim);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.lazo-arrow {
  font-size: 0.58rem;
  color: var(--border);
  flex-shrink: 0;
}

.lazo-desc {
  font-size: 0.6rem;
  color: var(--text-dim);
  margin: 0 0 8px 0;
  line-height: 1.5;
}

/* ── Undo / Redo Row ─────────────────────────────────────────────────────── */

.undo-redo-row {
  display: flex;
  gap: 6px;
  padding: 4px 12px 8px;
}

.undo-redo-row .btn {
  flex: 1;
  font-size: 0.65rem;
  padding: 4px 8px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.15s, opacity 0.15s;
}

.undo-redo-row .btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.undo-redo-row .btn:not(:disabled):hover {
  background: var(--bg-hover);
}

/* ── Lasso Layers List ────────────────────────────────────────────────────── */

.lasso-layers-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 8px;
}

.lasso-layer-item,
.lasso-layer-row {
  font-size: 0.62rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-dim);
  transition: background 0.15s, border-color 0.15s;
}

.lasso-layer-row {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
}

.lasso-layer-name {
  flex: 1;
  text-align: left !important;
  font-size: 0.62rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-lasso-rename,
.btn-lasso-del {
  flex-shrink: 0;
  padding: 2px 5px !important;
  font-size: 0.6rem;
}

.lasso-layer-active {
  background: rgba(255, 149, 0, 0.1) !important;
  border-color: #FF9500 !important;
  color: #FF9500;
  font-weight: 700;
}

.lasso-editing-indicator {
  margin-top: 6px;
  padding: 6px 8px;
  font-size: 0.62rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.5;
  border-radius: var(--radius-sm);
  background: rgba(0, 122, 255, 0.08);
  border: 1px solid rgba(0, 122, 255, 0.2);
  color: #007AFF;
}

/* ── Layer Name Label (Rename on Double-Click) ───────────────────────────── */

.layer-name-label {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0 4px;
  max-width: 60px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}

.layer-name-label:hover {
  color: var(--text);
}

/* ── Lasso Overlay & Tools ───────────────────────────────────────────────── */

.lasso-overlay {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  cursor: default;
  border-radius: var(--radius);
}

.btn-lasso-active {
  background: rgba(255, 149, 0, 0.15) !important;
  border-color: #FF9500 !important;
  color: #FF9500 !important;
  font-weight: 700;
  animation: lasso-pulse 1.6s ease-in-out infinite;
}

.btn-lasso-active:hover {
  background: rgba(255, 149, 0, 0.25) !important;
  border-color: #FF9500 !important;
  color: #FF9500 !important;
}

@keyframes lasso-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 149, 0, 0.3); }
  50% { box-shadow: 0 0 12px 2px rgba(255, 149, 0, 0.25); }
}

.lasso-status {
  margin-top: 6px;
  padding: 4px 8px;
  font-size: 0.6rem;
  font-weight: 600;
  color: #FF9500;
  background: rgba(255, 149, 0, 0.08);
  border: 1px solid rgba(255, 149, 0, 0.2);
  border-radius: var(--radius-sm);
  text-align: center;
}

/* ── Selection Mode Buttons ──────────────────────────────────────────── */

.sel-mode-group {
  display: flex;
  gap: 3px;
  margin-bottom: 8px;
}

.sel-mode-btn {
  flex: 1;
  padding: 5px 2px;
  font-size: 0.62rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
  color: var(--fg-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  text-align: center;
  white-space: nowrap;
}

.sel-mode-btn:hover {
  background: var(--bg-raised);
  color: var(--fg-primary);
}

.sel-mode-btn.active {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

/* ── Text Stencil Config ─────────────────────────────────────────────── */

.stencil-config {
  margin-top: 6px;
  padding: 8px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* ── Transform Button ────────────────────────────────────────────────── */

.btn-lasso-transform {
  font-size: 0.72rem;
  padding: 2px 6px;
  color: var(--accent) !important;
  border-color: var(--accent) !important;
}

.btn-lasso-transform:hover:not(:disabled) {
  background: var(--accent) !important;
  color: #FFF !important;
}

/* Layer Picker Popup */
.lasso-layer-picker {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 100;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  min-width: 180px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lasso-picker-title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-dim);
}

.lasso-picker-btn {
  justify-content: center !important;
  font-weight: 600 !important;
}

.lasso-picker-btn:hover {
  background: var(--bg-hover) !important;
}

.lasso-picker-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.15);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TEXT LAYER CONTROLS
   ═══════════════════════════════════════════════════════════════════════════ */

.text-layer-swatch {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 800;
  color: #FFFFFF;
  text-shadow: 0 0 2px rgba(0,0,0,0.3);
}

.text-input-row {
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}

.text-layer-input {
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 8px 10px;
  background: var(--bg-inset);
  color: var(--text);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  outline: none;
  resize: vertical;
  min-height: 36px;
  max-height: 120px;
  line-height: 1.4;
  width: 100%;
}

.text-layer-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.text-layer-input::placeholder {
  color: var(--text-muted);
}

.text-font-select {
  flex: 1;
  min-width: 0;
}

.text-custom-font {
  width: 100%;
  flex: 1;
}

.text-custom-font::placeholder {
  color: var(--text-muted);
  font-size: 0.6rem;
}

.layer-manager-btns {
  display: flex;
  gap: 4px;
}

.btn-add-text {
  color: var(--accent) !important;
  border-color: var(--accent) !important;
}

.btn-add-text:hover:not(:disabled) {
  background: var(--accent) !important;
  color: #FFFFFF !important;
}

/* ── Text Position Overlay ──────────────────────────────────────────────── */

.text-pos-overlay {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 12;
  cursor: grab;
}

.text-pos-overlay.dragging {
  cursor: grabbing;
}

/* ── Per-character list section ─────────────────────────────────────────── */

.char-list-section {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.char-item {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.char-item-top {
  display: flex;
  align-items: center;
  gap: 8px;
}

.char-preview {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--fg-primary);
}

.char-glyph-input {
  width: 36px;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  padding: 4px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg-primary);
  flex-shrink: 0;
}

.char-prop-label {
  font-size: 0.66rem;
  color: var(--fg-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

.char-prop-slider {
  width: 100%;
  accent-color: var(--accent);
}

.char-prop-val {
  font-size: 0.72rem;
  color: var(--fg-secondary);
  min-width: 32px;
  text-align: right;
}

.char-pos-hint {
  font-size: 0.66rem;
  color: var(--fg-secondary);
  font-style: italic;
  margin-top: 2px;
}

.char-del-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1.4;
  transition: background 0.15s, color 0.15s;
}

.char-del-btn:hover {
  background: #ff3b30;
  border-color: #ff3b30;
  color: #fff;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MOBILE SIDEBAR TOGGLE BUTTON
   ═══════════════════════════════════════════════════════════════════════════ */

.mobile-sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1001;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent);
  color: #FFFFFF;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.35);
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.mobile-sidebar-toggle:active {
  transform: scale(0.92);
}

/* Backdrop behind sidebar on mobile */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.25s ease;
  -webkit-tap-highlight-color: transparent;
}

.sidebar-backdrop.visible {
  opacity: 1;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE — max-width: 768px
   ═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {

  /* Allow vertical scrolling on mobile */
  html, body, #root {
    overflow: auto;
    overflow-x: hidden;
  }

  /* ── Home Screen ──────────────────────────────────────────────────────── */

  .home {
    padding: 40px 20px 80px;
    gap: 36px;
    min-height: 100vh;
    height: auto;
    overflow: auto;
  }

  .home-header {
    gap: 16px;
  }

  .logo-container {
    width: 80px;
    height: 80px;
  }

  .home-title {
    font-size: 2.2rem;
    letter-spacing: -1px;
  }

  .home-subtitle {
    font-size: 0.62rem;
    letter-spacing: 2.5px;
  }

  .home-cards {
    flex-direction: column;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 0 8px;
  }

  .home-card {
    width: 100%;
    max-width: 320px;
    padding: 28px 20px;
  }

  .home-developer {
    position: relative;
    bottom: auto;
    left: auto;
    transform: none;
    margin-top: 12px;
  }

  /* ── Studio Layout ────────────────────────────────────────────────────── */

  .studio {
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }

  /* ── Sidebar as Slide-Out Drawer ──────────────────────────────────────── */

  .sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85vw;
    max-width: 340px;
    min-width: 0;
    height: 100vh;
    height: 100dvh;
    z-index: 1000;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .sidebar.mobile-open {
    right: 0;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  }

  .sidebar-backdrop {
    display: block;
    pointer-events: none;
  }

  .sidebar-backdrop.visible {
    pointer-events: all;
  }

  .mobile-sidebar-toggle {
    display: flex;
  }

  /* ── Viewport Full Width ──────────────────────────────────────────────── */

  .viewport {
    width: 100vw;
    min-height: 60vh;
    padding-top: 12px;
    order: 0;
  }

  /* ── Canvas Sizing — remove sidebar offset ────────────────────────────── */

  .image-canvas {
    max-width: calc(100vw - 24px);
    max-height: 60vh;
  }

  .view-split .image-canvas {
    max-width: calc(50vw - 16px);
  }

  .view-split .canvas-panel canvas {
    max-height: 50vh;
  }

  .canvas-container {
    padding: 12px;
    gap: 4px;
  }

  /* Split view stacks vertically on small screens */
  .canvas-container.view-split {
    flex-direction: column;
    align-items: center;
  }

  .canvas-container.view-split .canvas-panel {
    width: 100%;
  }

  .canvas-container.view-split .image-canvas {
    max-width: calc(100vw - 24px);
    max-height: 40vh;
  }

  /* ── Video Preview ────────────────────────────────────────────────────── */

  .preview-container {
    max-width: 100vw;
    padding: 0 8px 16px;
  }

  .video-preview-canvas {
    max-width: calc(100vw - 16px);
    max-height: 45vh;
  }

  .video-controls {
    max-width: calc(100vw - 16px);
    gap: 8px;
    padding: 8px 12px;
    flex-wrap: wrap;
  }

  .time-display {
    min-width: 60px;
    font-size: 0.6rem;
  }

  .timeline-container {
    max-width: 100vw;
  }

  /* ── Dropzone ─────────────────────────────────────────────────────────── */

  .dropzone-inner {
    padding: 32px 20px;
  }

  .dropzone-icon {
    font-size: 1.5rem;
  }

  .dropzone p {
    font-size: 0.75rem;
  }

  /* ── Sidebar Controls — Bigger Touch Targets ──────────────────────────── */

  .section {
    padding: 14px;
  }

  input[type='range'] {
    height: 6px;
  }

  input[type='range']::-webkit-slider-thumb {
    width: 22px;
    height: 22px;
  }

  input[type='range']::-moz-range-thumb {
    width: 22px;
    height: 22px;
  }

  .btn {
    padding: 10px 16px;
    font-size: 0.75rem;
    min-height: 40px;
  }

  .btn-sm {
    padding: 8px 12px;
    font-size: 0.68rem;
    min-height: 36px;
  }

  .btn-back, .btn-help {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .control-row .label {
    font-size: 0.68rem;
    min-width: 72px;
  }

  .control-row .value {
    font-size: 0.68rem;
  }

  .select-control {
    height: 34px;
    font-size: 0.7rem;
  }

  .checkbox-row label {
    font-size: 0.7rem;
    gap: 10px;
    min-height: 36px;
  }

  .checkbox-row input[type='checkbox'] {
    width: 20px;
    height: 20px;
  }

  /* ── FX Grid — 2 columns on mobile ────────────────────────────────────── */

  .fx-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .fx-chip {
    padding: 10px 6px;
    font-size: 0.6rem;
  }

  .fx-chip .fx-chip-icon {
    font-size: 1rem;
  }

  .fx-block-picker-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
  }

  /* ── Layer Panels ─────────────────────────────────────────────────────── */

  .layer-panel {
    padding: 12px;
  }

  .layer-control-row .label {
    font-size: 0.6rem;
    min-width: 44px;
  }

  .layer-shape-row .toggle-group .btn {
    font-size: 0.6rem;
    padding: 5px 0;
  }

  /* ── Toggle Group ─────────────────────────────────────────────────────── */

  .toggle-group {
    padding: 3px;
  }

  .toggle-group .btn-sm {
    padding: 6px 8px;
    font-size: 0.62rem;
  }

  /* ── Color Presets ────────────────────────────────────────────────────── */

  .preset-swatch {
    width: 24px;
    height: 24px;
  }

  /* ── Data Readout ─────────────────────────────────────────────────────── */

  .data-readout {
    bottom: 8px;
    left: 8px;
  }

  .data-readout-item {
    font-size: 0.5rem;
    padding: 2px 6px;
  }

  /* ── Render Status / Setup ────────────────────────────────────────────── */

  .render-status,
  .render-setup {
    padding: 24px 16px;
    max-width: 90vw;
  }

  .render-done video {
    max-width: calc(100vw - 32px);
  }

  /* ── Exit Confirm ─────────────────────────────────────────────────────── */

  .exit-confirm-overlay {
    padding-top: 30vh;
    align-items: flex-start;
  }

  .exit-confirm-dialog {
    max-width: 85vw;
  }

  /* ── Settings Overlay ─────────────────────────────────────────────────── */

  .settings-toggle {
    width: 38px;
    height: 38px;
    font-size: 17px;
    opacity: 0.7;
  }

  .settings-menu {
    min-width: 200px;
  }

  /* ── Scrollbar — hide on mobile ───────────────────────────────────────── */

  ::-webkit-scrollbar {
    width: 3px;
  }

  /* ── FX Sequencer ─────────────────────────────────────────────────────── */

  .fx-block {
    padding: 10px 12px;
  }

  .fx-block-controls {
    flex-wrap: wrap;
    gap: 8px;
  }

  .fx-block-intensity {
    min-width: 100%;
  }

  /* ── Undo / Redo ──────────────────────────────────────────────────────── */

  .undo-redo-row {
    padding: 6px 14px 10px;
  }

  .undo-redo-row .btn {
    min-height: 36px;
    font-size: 0.68rem;
  }

  /* ── Lasso ────────────────────────────────────────────────────────────── */

  .lasso-layer-row {
    padding: 4px;
  }

  .btn-lasso-rename,
  .btn-lasso-del {
    padding: 4px 8px !important;
    font-size: 0.65rem;
    min-height: 32px;
  }

  /* ── Tour Popup ───────────────────────────────────────────────────────── */

  .tour-popup {
    padding: 14px 16px 12px;
  }

  .tour-title {
    font-size: 0.78rem;
  }

  .tour-desc {
    font-size: 0.7rem;
  }

}

/* ═══════════════════════════════════════════════════════════════════════════
   VERY SMALL SCREENS — max-width: 420px
   ═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 420px) {

  .home-title {
    font-size: 1.7rem;
  }

  .home-card {
    padding: 22px 16px;
  }

  .home-card-title {
    font-size: 0.78rem;
  }

  .sidebar {
    width: 92vw;
  }

  .image-canvas {
    max-height: 50vh;
  }

  .video-preview-canvas {
    max-height: 38vh;
  }

  .canvas-container.view-split {
    flex-direction: column;
  }

  .canvas-container.view-split .image-canvas {
    max-height: 35vh;
  }

  .fx-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .control-row {
    flex-wrap: wrap;
  }

  .control-row .label {
    min-width: 100%;
    margin-bottom: 2px;
  }
}