/* ═══════════════════════════════════════════════════════════════════
   ASCII Vidéo — Style Sheet  (redesign)
   Aesthetic: precision-industrial / dark terminal / editorial
   Fonts: Space Mono (monospace code feel) + DM Sans (UI labels)
   ═══════════════════════════════════════════════════════════════════ */

/* ── Design tokens ────────────────────────────────────────────────── */
:root {
  --bg:            #0a0a0a;
  --bg-panel:      #101012;
  --bg-hover:      #1a1a1e;
  --bg-input:      #141416;
  --border:        #222226;
  --border-focus:  #444;
  --text:          #e8e8e8;
  --text-muted:    #666;
  --text-dim:      #3a3a40;
  --accent:        #c8f23a;          /* lime-yellow — the one pop of colour */
  --accent-dim:    rgba(200,242,58,.12);
  --accent-border: rgba(200,242,58,.35);
  --danger:        #ff4d4d;
  --sidebar-w:     268px;
  --toolbar-h:     44px;
  --footer-h:      32px;
  --radius:        4px;
  --radius-lg:     8px;
  --mono:          'Space Mono', monospace;
  --sans:          'DM Sans', sans-serif;
  --transition:    150ms ease;
}

.light-theme {
  --bg:            #f4f4f0;
  --bg-panel:      #ebebе7;
  --bg-hover:      #e0e0dc;
  --bg-input:      #f9f9f6;
  --border:        #d4d4ce;
  --border-focus:  #999;
  --text:          #111;
  --text-muted:    #888;
  --text-dim:      #ccc;
  --accent:        #00d0ff;
  --accent-dim:    rgba(0,208,255,.08);
  --accent-border: rgba(0,208,255,.3);
}

/* ── Reset ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

body {
  font-family: var(--sans);
  font-size: 12px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout skeleton ──────────────────────────────────────────────── */
.layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ──────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Logo / Header ────────────────────────────────────────────────── */
.sidebar-header {
  padding: 20px 18px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.logo {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 9px;
}

.logo-icon {
  width: 38px;
  height: 20px;
  flex-shrink: 0;
}

.logo-bracket { color: var(--text-muted); }
.logo-text    { color: var(--text); }
.logo-accent  { color: var(--accent); }

.logo-sub {
  font-family: var(--sans);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-top: 5px;
}

/* ── Panels ───────────────────────────────────────────────────────── */
.panel {
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
}

.panel-label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.panel-icon {
  color: var(--accent);
  font-size: 11px;
}

/* ── Drop zone ────────────────────────────────────────────────────── */
.drop-zone {
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), background var(--transition);
}

.drop-zone:has(.drop-label:hover) {
  border-color: var(--accent-border);
  background: var(--accent-dim);
}

.file-input-hidden {
  position: absolute;
  left: -9999px;
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  pointer-events: none;
}

.drop-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 18px 12px;
  cursor: pointer;
  text-align: center;
}

.drop-icon {
  font-size: 22px;
  color: var(--text-muted);
  transition: color var(--transition);
}

.drop-zone:has(.drop-label:hover) .drop-icon { color: var(--accent); }

.drop-text {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.3px;
}

.drop-hint {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ── Params (sliders) ─────────────────────────────────────────────── */
.param { margin-bottom: 10px; }
.param:last-child { margin-bottom: 0; }

.param-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 5px;
}

.param-name {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.2px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.param-val {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  font-weight: 700;
}

/* Range inputs */
input[type='range'] {
  -webkit-appearance: none;
  width: 100%;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  transition: background var(--transition);
}

input[type='range']:hover { background: #333; }

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--text);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--bg-panel);
  box-shadow: 0 0 0 1px var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

input[type='range']:hover::-webkit-slider-thumb {
  transform: scale(1.2);
  box-shadow: 0 0 0 1px var(--accent-border), 0 0 6px var(--accent-dim);
}

input[type='range']:focus { outline: none; }

/* ── Selects ──────────────────────────────────────────────────────── */
select {
  width: 100%;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 8px;
  font-family: var(--mono);
  font-size: 11px;
  outline: none;
  cursor: pointer;
  appearance: none;
  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='%23666'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  transition: border-color var(--transition);
}

select:focus { border-color: var(--border-focus); }
select:hover { border-color: var(--border-focus); }

/* ── Toggle switches ──────────────────────────────────────────────── */
.toggle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
}

.toggle input[type='checkbox'] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  flex-shrink: 0;
  width: 28px;
  height: 15px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 15px;
  position: relative;
  transition: background var(--transition), border-color var(--transition);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 9px;
  height: 9px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition);
}

.toggle input:checked ~ .toggle-track {
  background: var(--accent-dim);
  border-color: var(--accent-border);
}

.toggle input:checked ~ .toggle-track .toggle-thumb {
  transform: translateX(13px);
  background: var(--accent);
}

.toggle-label {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  user-select: none;
}

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

/* ── Char input ───────────────────────────────────────────────────── */
.char-input {
  width: 100%;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 8px;
  font-family: var(--mono);
  font-size: 14px;
  text-align: center;
  outline: none;
  transition: border-color var(--transition);
}
.char-input:focus { border-color: var(--border-focus); }

/* ── Help button (frame info) ─────────────────────────────────────── */
.help-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 9px;
  font-family: var(--sans);
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: all var(--transition);
}
.help-btn:hover { border-color: var(--accent-border); color: var(--accent); }

/* ── Badges / chips ───────────────────────────────────────────────── */
.badge-green {
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 3px;
  padding: 2px 6px;
  font-family: var(--mono);
}

.info-chip {
  font-size: 10px;
  color: var(--text-muted);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 5px 8px;
  line-height: 1.5;
}

.hint {
  font-size: 10px;
  color: var(--text-muted);
  font-style: italic;
}

.param-meta {
  margin-top: 4px;
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

/* ── Playback transport ───────────────────────────────────────────── */
.playback-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
}

.transport {
  display: flex;
  align-items: center;
  gap: 6px;
}

.transport-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  transition: all var(--transition);
}

.transport-btn:hover {
  border-color: var(--border-focus);
  color: var(--text);
  background: var(--bg-hover);
}

.transport-play {
  height: 28px;
  padding: 0 14px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--transition);
}
.transport-play:hover { opacity: 0.85; }

.frame-counter {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ── Progress (video processing) ─────────────────────────────────── */
.progress-wrap {
  width: 100%;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 6px;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.3s ease;
}

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px 14px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--transition);
}
.btn-primary:hover { opacity: 0.85; }

.btn-ghost {
  width: 100%;
  padding: 6px 12px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 4px;
}
.btn-ghost:hover {
  border-color: var(--border-focus);
  color: var(--text);
  background: var(--bg-hover);
}

/* ── Main area ────────────────────────────────────────────────────── */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  overflow: hidden;
}

.main-content {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  min-height: 0;
}

/* ASCII output */
#ascii-art {
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  white-space: pre;
  line-height: 1.0;
  flex: 1;
  overflow: auto;
  background: var(--bg);
  color: var(--text);
  padding: 12px 16px;
  margin: 0;
  border: none;
  display: none;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  word-spacing: 0;
  letter-spacing: 0;
  font-kerning: none;
  text-rendering: optimizeSpeed;
  -webkit-font-smoothing: none;
}

.light-theme #ascii-art {
  background: #fafaf7;
  color: #1a1a1a;
}

/* ── Empty state ──────────────────────────────────────────────────── */
.empty-state {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Grid background */
.empty-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
}

.empty-inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.empty-title {
  font-family: var(--mono);
  font-size: clamp(18px, 3vw, 40px);
  font-weight: 700;
  color: var(--text-dim);
  line-height: 1;
  letter-spacing: -2px;
  user-select: none;
}
.empty-title span { color: var(--accent); }

.empty-sub {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.empty-cta {
  margin-top: 8px;
  width: auto;
  padding: 10px 24px;
  font-size: 12px;
}

/* ── Toolbar ──────────────────────────────────────────────────────── */
.toolbar {
  height: var(--toolbar-h);
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
}

.toolbar-left,
.toolbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.toolbar-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Tool buttons */
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 11px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.tool-btn:hover {
  border-color: var(--border-focus);
  color: var(--text);
  background: var(--bg-hover);
}

.tool-btn--accent {
  border-color: var(--accent-border);
  color: var(--accent);
}

.tool-btn--accent:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* Export progress in toolbar */
.export-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 200px;
}

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

.progress-text {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Footer ───────────────────────────────────────────────────────── */
.page-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-h);
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  z-index: 100;
}

/* Compensate for footer height in layout */
.layout { padding-bottom: var(--footer-h); }

.footer-left, .footer-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.footer-link {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  transition: color var(--transition);
}
.footer-link:hover { color: var(--text); }

.footer-studio {
  font-size: 11px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-studio:hover { color: var(--accent); }

/* ── Toast notification ───────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--footer-h) + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--bg-hover);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  z-index: 2000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.toast.visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ── Tooltip ──────────────────────────────────────────────────────── */
.tooltip {
  position: fixed;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  width: 230px;
  max-width: 90vw;
  z-index: 1500;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  font-size: 11px;
  line-height: 1.5;
  color: var(--text-muted);
  display: none;
}

.tooltip.visible { display: block; }

.tooltip strong {
  display: block;
  color: var(--text);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.tooltip p { margin-bottom: 5px; }
.tooltip p:last-child { margin-bottom: 0; }

/* ── Modals ───────────────────────────────────────────────────────── */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 3000;
  align-items: center;
  justify-content: center;
}

.modal[style*="block"] { display: flex !important; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: min(620px, 90vw);
  max-height: 80vh;
  overflow-y: auto;
  padding: 28px 30px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  animation: modal-in 0.2s ease;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.97) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  width: 26px;
  height: 26px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: all var(--transition);
  line-height: 1;
}
.modal-close:hover { border-color: var(--danger); color: var(--danger); }

.modal h2 {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.3px;
}

.modal h3 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 18px 0 8px;
}

.modal-body {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.65;
}

.modal-body p { margin-bottom: 8px; }
.modal-body strong { color: var(--text); font-weight: 500; }

.modal-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-border);
  transition: border-color var(--transition);
}
.modal-body a:hover { border-color: var(--accent); }

/* ── Small screen ─────────────────────────────────────────────────── */
.small-screen-message {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 24px;
}

.brand-mark {
  font-family: var(--mono);
  font-size: clamp(28px, 8vw, 48px);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-icon {
  width: clamp(52px, 13vw, 80px);
  height: clamp(28px, 7vw, 42px);
  flex-shrink: 0;
}
.brand-ascii  { color: var(--accent); }
.brand-name   { color: var(--text-muted); }

.small-screen-message p {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 340px;
  line-height: 1.6;
}

@media (max-width: 800px) {
  .layout, .page-footer { display: none !important; }
  .small-screen-message { display: flex; }
}

/* ── Light theme overrides ────────────────────────────────────────── */
.light-theme {
  background: var(--bg);
  color: var(--text);
}

.light-theme .sidebar         { background: var(--bg-panel); }
.light-theme .bg-panel        { background: var(--bg-panel); }
.light-theme .toolbar         { background: var(--bg-panel); }
.light-theme .page-footer     { background: var(--bg-panel); }
.light-theme .modal-content   { background: var(--bg-panel); }
.light-theme .drop-zone       { border-color: var(--border); }
.light-theme input[type='range'] { background: var(--border); }

/* Scrollbar */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }