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

:root {
  --font-ui: 'Syne', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --transition: 0.15s ease;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --sidebar-w: 288px;
  --header-h: 52px;
}

/* Dark theme (default) */
:root, [data-theme="dark"] {
  --bg:              #0e0e0f;
  --bg-2:            #161618;
  --bg-3:            #1e1e20;
  --bg-4:            #262628;
  --bg-hover:        #2a2a2c;
  --border:          rgba(255,255,255,0.07);
  --border-md:       rgba(255,255,255,0.12);
  --border-strong:   rgba(255,255,255,0.22);
  --text-primary:    #f0f0ee;
  --text-secondary:  #888886;
  --text-tertiary:   #555553;
  --accent:          #d4ff5c;
  --accent-dark:     #b8e040;
  --accent-rgb:      212, 255, 92;
  --accent-fg:       #0e0e0f;
  --shadow:          0 20px 60px rgba(0,0,0,0.5);
  --shadow-sm:       0 4px 16px rgba(0,0,0,0.3);
}

/* Light theme */
[data-theme="light"] {
  --bg:              #fafaf9;
  --bg-2:            #f2f2f0;
  --bg-3:            #ebebea;
  --bg-4:            #e2e2e0;
  --bg-hover:        #dededc;
  --border:          rgba(0,0,0,0.07);
  --border-md:       rgba(0,0,0,0.12);
  --border-strong:   rgba(0,0,0,0.22);
  --text-primary:    #111110;
  --text-secondary:  #777775;
  --text-tertiary:   #aaaaaa;
  --accent:          #1a1a1a;
  --accent-dark:     #333333;
  --accent-rgb:      26, 26, 26;
  --accent-fg:       #fafaf9;
  --shadow:          0 20px 60px rgba(0,0,0,0.12);
  --shadow-sm:       0 4px 16px rgba(0,0,0,0.08);
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

/* ── App shell ────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
}

/* ── Drop overlay ─────────────────────────────────────── */
.drop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(14,14,15,0.88);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
[data-theme="light"] .drop-overlay { background: rgba(250,250,249,0.88); }
.drop-overlay.active { display: flex; }

.drop-overlay-inner {
  border: 1.5px dashed var(--accent);
  border-radius: var(--radius-lg);
  padding: 60px 80px;
  text-align: center;
  animation: pulse-border 1.5s ease-in-out infinite;
}
@keyframes pulse-border { 0%,100%{opacity:1} 50%{opacity:0.5} }

.drop-icon {
  font-size: 48px;
  color: var(--accent);
  margin-bottom: 16px;
  animation: bounce 0.8s ease-in-out infinite alternate;
}
@keyframes bounce { from{transform:translateY(0)} to{transform:translateY(-8px)} }
.drop-overlay-inner p { font-size: 16px; font-weight: 500; color: var(--text-primary); }

/* ── Header ───────────────────────────────────────────── */
.header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
  gap: 16px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
  flex: 1;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-mark { font-size: 18px; color: var(--accent); line-height: 1; }
.logo-text { font-size: 15px; font-weight: 600; color: var(--text-primary); letter-spacing: -0.02em; }
.logo-text em { font-style: normal; color: var(--accent); }
[data-theme="light"] .logo-text em { color: #e63946; }

.file-name-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 0;
  overflow: hidden;
  animation: fade-in 0.2s ease;
}
@keyframes fade-in { from{opacity:0;transform:translateX(-6px)} to{opacity:1;transform:translateX(0)} }
.file-sep { color: var(--text-tertiary); font-size: 18px; margin: 0 6px; font-weight: 300; }
.file-name-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 13px;
  min-width: 20px;
  max-width: 200px;
  width: auto;
  transition: color var(--transition);
  cursor: text;
  padding: 3px 4px;
  border-radius: var(--radius-sm);
}
.file-name-input:hover { color: var(--text-primary); background: var(--bg-3); }
.file-name-input:focus { color: var(--text-primary); background: var(--bg-3); outline: 2px solid var(--accent); outline-offset: 0; }
.file-ext { font-family: var(--font-mono); font-size: 13px; color: var(--text-tertiary); }
.rename-confirm {
  background: transparent; border: none; cursor: pointer; color: var(--accent);
  font-size: 14px; padding: 2px 6px; opacity: 0; transition: opacity var(--transition); pointer-events: none;
}
.file-name-input:focus ~ .rename-confirm, .rename-confirm:focus { opacity: 1; pointer-events: all; }

.header-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }

.btn-divider {
  width: 1px;
  height: 20px;
  background: var(--border-md);
  margin: 0 2px;
  flex-shrink: 0;
}

.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-ui); font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border-strong); background: var(--bg-3); }
.btn-ghost:active { transform: scale(0.97); }
.btn-icon { padding: 0 9px; }

.btn-ghost.btn-danger { color: var(--text-tertiary); }
.btn-ghost.btn-danger:hover { color: #e05252; border-color: rgba(224,82,82,0.4); background: rgba(224,82,82,0.06); }

.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px;
  padding: 0 14px;
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--accent-fg);
  font-family: var(--font-ui); font-size: 13px; font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(var(--accent-rgb),0.25); }
.btn-primary:active:not(:disabled) { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-outline {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px;
  padding: 0 18px;
  background: transparent;
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-ui); font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 16px;
}
.btn-outline:hover { color: var(--text-primary); border-color: var(--border-strong); }

/* ── Main layout ──────────────────────────────────────── */
.main { display: flex; flex: 1; min-height: 0; }

/* ── Sidebar ──────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--bg);
  overflow-y: auto; overflow-x: hidden;
  display: flex; flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-4) transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 4px; }

/* ── Empty state ──────────────────────────────────────── */
.empty-state {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 40px 24px; text-align: center;
}
.empty-icon {
  font-size: 36px; color: var(--text-tertiary); margin-bottom: 16px;
  animation: spin-slow 8s linear infinite;
}
@keyframes spin-slow { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }
.empty-title { font-size: 14px; font-weight: 600; color: var(--text-secondary); margin-bottom: 8px; }
.empty-desc { font-size: 13px; color: var(--text-tertiary); line-height: 1.6; }

/* ── Panels ───────────────────────────────────────────── */
.panels { display: flex; flex-direction: column; flex: 1; }
.panel { border-bottom: 1px solid var(--border); }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px 10px;
}
.panel-title { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-tertiary); }
.panel-badge {
  font-size: 11px; font-family: var(--font-mono);
  background: var(--bg-4); color: var(--text-secondary);
  padding: 2px 7px; border-radius: 20px;
}
.panel-body { padding: 4px 18px 16px; }

/* ── Color controls ───────────────────────────────────── */
.color-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  animation: slide-in 0.2s ease;
}
@keyframes slide-in { from{opacity:0;transform:translateY(4px)} to{opacity:1;transform:translateY(0)} }
.color-row:last-child { border-bottom: none; }

.color-meta { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.color-name { font-size: 13px; font-weight: 500; color: var(--text-primary); }
.color-hex-display { font-family: var(--font-mono); font-size: 11px; color: var(--text-tertiary); }
.color-sublabel { font-size: 10px; color: var(--text-tertiary); letter-spacing: 0.02em; }

.hex-input {
  width: 82px; padding: 6px 8px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono); font-size: 12px;
  text-transform: uppercase;
  transition: all var(--transition); outline: none;
}
.hex-input:hover { border-color: var(--border-md); }
.hex-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb),0.12); }

.color-swatch {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-md);
  overflow: hidden; position: relative; cursor: pointer; flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}
.color-swatch:hover { transform: scale(1.08); box-shadow: var(--shadow-sm); }
.color-swatch input[type="color"] {
  position: absolute; width: 200%; height: 200%; top: -25%; left: -25%;
  border: none; padding: 0; cursor: pointer; background: transparent;
}

/* ── Presets ──────────────────────────────────────────── */
.preset-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }

.preset-item {
  position: relative; border-radius: var(--radius-sm); overflow: hidden;
  cursor: pointer; aspect-ratio: 1;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--border);
}
.preset-item:hover { transform: scale(1.06); box-shadow: 0 4px 16px rgba(0,0,0,0.4); }
.preset-item.active { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(var(--accent-rgb),0.4); }
.preset-item::after {
  content: attr(data-name);
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.65);
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 600; color: #fff;
  opacity: 0; transition: opacity var(--transition);
  text-align: center; padding: 4px;
}
.preset-item:hover::after { opacity: 1; }
.preset-item.active::after { opacity: 1; background: rgba(0,0,0,0.35); }

/* ── Info table ───────────────────────────────────────── */
.info-table { width: 100%; border-collapse: collapse; }
.info-table tr { border-bottom: 1px solid var(--border); }
.info-table tr:last-child { border-bottom: none; }
.info-table td { padding: 8px 0; vertical-align: middle; }
.info-label { font-size: 12px; color: var(--text-tertiary); width: 72px; flex-shrink: 0; }
.info-value { font-family: var(--font-mono); font-size: 12px; color: var(--text-primary); text-align: right; }

/* Editable nm input inside info table */
.info-name-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
  width: 100%;
  padding: 2px 4px;
  border-radius: 4px;
  transition: all var(--transition);
  cursor: text;
}
.info-name-input:hover { background: var(--bg-3); }
.info-name-input:focus {
  background: var(--bg-3);
  outline: 1.5px solid var(--accent);
  color: var(--text-primary);
}

/* ── Preview ──────────────────────────────────────────── */
.preview {
  flex: 1; display: flex; flex-direction: column; min-width: 0;
  background: var(--bg-2);
  position: relative;
  transition: background 0.25s ease;
}

.preview-empty { flex: 1; display: flex; align-items: center; justify-content: center; }
.preview-empty-inner { text-align: center; }
.preview-drop-hint { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.preview-drop-icon { font-size: 52px; color: var(--text-tertiary); opacity: 0.4; }
.preview-drop-hint p { font-size: 15px; color: var(--text-tertiary); line-height: 1.6; }

.preview-canvas {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 24px; padding: 32px;
}

.lottie-wrap {
  width: 280px; height: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden; background: white; position: relative;
  box-shadow: var(--shadow);
  transition: background var(--transition), box-shadow 0.25s ease;
}
.lottie-wrap.bg-white  { background: #ffffff; }
.lottie-wrap.bg-light  { background: #f0f0f0; }
.lottie-wrap.bg-dark   { background: #1c1c1e; }
.lottie-wrap.bg-checker {
  background-image: repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%);
  background-size: 16px 16px;
}
#lottie-container { width: 100%; height: 100%; }

/* ── Preview controls ─────────────────────────────────── */
.preview-controls {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.bg-switcher { display: flex; align-items: center; gap: 6px; }
.bg-btn {
  width: 20px; height: 20px; border-radius: 50%;
  border: 1.5px solid var(--border-md); cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
}
.bg-btn:hover { transform: scale(1.15); }
.bg-btn.active { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(var(--accent-rgb),0.3); }
.bg-btn[data-bg="white"]  { background: #ffffff; }
.bg-btn[data-bg="light"]  { background: #f0f0f0; }
.bg-btn[data-bg="dark"]   { background: #1c1c1e; }
.bg-btn.checker {
  background-image: repeating-conic-gradient(#aaa 0% 25%, #fff 0% 50%);
  background-size: 8px 8px;
}

.playback-controls { display: flex; align-items: center; gap: 10px; }
.ctrl-btn {
  width: 28px; height: 28px;
  background: var(--bg-4); border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-primary);
  transition: all var(--transition);
}
.ctrl-btn:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.ctrl-label { font-size: 11px; color: var(--text-tertiary); font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; }
.speed-slider {
  -webkit-appearance: none; appearance: none;
  width: 80px; height: 4px;
  background: var(--bg-4); border-radius: 2px; outline: none; cursor: pointer;
}
.speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--accent); border-radius: 50%; cursor: pointer;
  transition: transform var(--transition);
}
.speed-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.ctrl-val { font-family: var(--font-mono); font-size: 12px; color: var(--text-secondary); min-width: 24px; }

/* ── Toast ────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--bg-4); color: var(--text-primary);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  padding: 10px 18px; font-size: 13px; font-weight: 500;
  opacity: 0; pointer-events: none;
  transition: all 0.2s ease;
  white-space: nowrap; z-index: 2000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { border-color: rgba(var(--accent-rgb),0.4); color: var(--accent); }
[data-theme="light"] .toast.success { border-color: #1a1a1a; color: #1a1a1a; }