/* GC Poster Generator — Studio UI v2
 * Modern WYSIWYG editor interface with dark sidebar + clean preview.
 * Typography: Manrope (UI) + Fraunces (display) + JetBrains Mono (technical).
 */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=Manrope:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --sidebar-bg: #1a1a2e;
  --sidebar-surface: #25254a;
  --sidebar-border: rgba(255,255,255,0.08);
  --sidebar-text: #e2e2f0;
  --sidebar-muted: #8b8ba3;
  --main-bg: #f8f9fa;
  --surface: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --purple: #8b5cf6;
  --purple-soft: #a78bfa;
  --pink: #ec4899;
  --gradient-btn: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --gold: #e8c97a;
  --border: rgba(0,0,0,0.08);
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 24px 48px rgba(0,0,0,0.16);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Foundation ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Manrope', 'Noto Sans SC', system-ui, sans-serif;
  background: var(--main-bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
::selection { background: var(--purple); color: #fff; }

/* ── App Layout ─────────────────────────────────────────────── */
.app-layout {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--sidebar-border);
  gap: 16px;
}
.app-header .brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.app-header .brand h1 {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 700;
  font-size: 22px;
  color: #fff;
  letter-spacing: -0.02em;
}
.app-header .brand h1 .accent { color: var(--purple-soft); }
.app-header .brand .badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  background: var(--sidebar-surface);
  padding: 4px 10px;
  border-radius: 999px;
}
.app-header nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.app-header nav a {
  font-size: 12px;
  color: var(--sidebar-muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
.app-header nav a:hover {
  color: #fff;
  background: var(--sidebar-surface);
}

/* ── Main Content (sidebar + preview) ────────────────────────── */
.app-main {
  display: grid;
  grid-template-columns: 380px 1fr;
  overflow: hidden;
}

/* ── Left Panel / Sidebar ────────────────────────────────────── */
.sidebar-panel {
  background: var(--sidebar-bg);
  overflow-y: auto;
  padding: 20px 22px 40px;
  border-right: 1px solid var(--sidebar-border);
}
.sidebar-panel::-webkit-scrollbar { width: 6px; }
.sidebar-panel::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.12);
  border-radius: 3px;
}

/* Section styling */
.panel-section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--sidebar-border);
}
.panel-section:last-child { border-bottom: none; }
.panel-section h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-section h3::before {
  content: '';
  width: 12px;
  height: 2px;
  background: var(--purple);
  display: inline-block;
}

/* Form fields */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 10px;
}
.form-field label {
  font-size: 11px;
  color: var(--sidebar-muted);
  letter-spacing: 0.04em;
}
.form-field input[type="text"],
.form-field input[type="date"],
.form-field input[type="number"],
.form-field select,
.form-field textarea {
  font-family: 'Manrope', sans-serif;
  font-size: 13px;
  padding: 9px 12px;
  border: 1px solid var(--sidebar-border);
  border-radius: 8px;
  background: var(--sidebar-surface);
  color: var(--sidebar-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}
.form-field input[type="color"] {
  height: 36px;
  padding: 3px;
  border: 1px solid var(--sidebar-border);
  border-radius: 8px;
  background: var(--sidebar-surface);
  cursor: pointer;
  width: 100%;
}

/* Tag checkboxes */
.tag-checkboxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.tag-chip {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid var(--sidebar-border);
  border-radius: 999px;
  background: var(--sidebar-surface);
  cursor: pointer;
  font-size: 12px;
  color: var(--sidebar-text);
  user-select: none;
  transition: all var(--transition);
}
.tag-chip input { display: none; }
.tag-chip .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--sidebar-muted);
  transition: all var(--transition);
}
.tag-chip:has(input:checked) {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
}
.tag-chip:has(input:checked) .dot {
  background: #fff;
  border-color: #fff;
}
.tag-chip:hover { border-color: var(--purple-soft); }

/* Dropdowns */
.select-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

/* Buttons */
.btn-primary {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  font-size: 14px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  background: var(--gradient-btn);
  color: #fff;
  cursor: pointer;
  width: 100%;
  transition: transform var(--transition), box-shadow var(--transition);
  letter-spacing: 0.02em;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.35);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  font-family: 'Manrope', sans-serif;
  font-weight: 600;
  font-size: 13px;
  padding: 10px 18px;
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius);
  background: var(--sidebar-surface);
  color: var(--sidebar-text);
  cursor: pointer;
  transition: all var(--transition);
  width: 100%;
}
.btn-secondary:hover {
  border-color: var(--purple);
  color: var(--purple-soft);
}

.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

/* Style panel */
.style-control {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.style-control label {
  font-size: 11px;
  color: var(--sidebar-muted);
  min-width: 50px;
}
.style-control input[type="range"] {
  flex: 1;
  accent-color: var(--purple);
  height: 4px;
}
.style-control .range-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--sidebar-text);
  min-width: 28px;
  text-align: right;
}
.style-control select {
  flex: 1;
  font-size: 12px;
  padding: 6px 10px;
  border: 1px solid var(--sidebar-border);
  border-radius: 6px;
  background: var(--sidebar-surface);
  color: var(--sidebar-text);
  outline: none;
}

/* Upload areas */
.upload-zone {
  border: 2px dashed var(--sidebar-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 10px;
  position: relative;
}
.upload-zone:hover,
.upload-zone.dragging {
  border-color: var(--purple);
  background: rgba(139, 92, 246, 0.08);
}
.upload-zone .hint {
  font-size: 11px;
  color: var(--sidebar-muted);
  letter-spacing: 0.1em;
}
.upload-zone .filename {
  font-size: 12px;
  color: var(--sidebar-text);
  margin-top: 4px;
  word-break: break-all;
}
.upload-zone input[type="file"] { display: none; }
.upload-zone .thumb {
  width: 48px;
  height: 48px;
  margin: 8px auto 0;
  border-radius: 6px;
  overflow: hidden;
  display: none;
}
.upload-zone .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Center Preview ──────────────────────────────────────────── */
.preview-pane {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 50%, rgba(139,92,246,0.03), transparent 70%),
    var(--main-bg);
  overflow: auto;
  gap: 16px;
}

.preview-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.preview-label .live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.preview-container {
  width: 540px;
  height: 960px;
  position: relative;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  flex-shrink: 0;
}
.preview-container .poster-stage {
  width: 1080px;
  height: 1920px;
  transform: scale(0.5);
  transform-origin: top left;
  position: absolute;
  top: 0;
  left: 0;
}

/* Editor interactive states */
.preview-container [data-editable] {
  cursor: pointer;
  transition: outline 0.15s ease;
  outline: 2px solid transparent;
  outline-offset: 4px;
}
.preview-container [data-editable]:hover {
  outline-color: rgba(139, 92, 246, 0.3);
}
.preview-container [data-editable].editor-selected {
  outline: 2px solid #8b5cf6 !important;
  outline-offset: 4px;
}
.preview-container [data-editable].editor-dragging {
  cursor: grabbing;
  opacity: 0.85;
}
.preview-container .qr-area {
  cursor: move;
}
.preview-container .qr-area.editor-selected {
  outline: 2px solid #8b5cf6;
  outline-offset: 4px;
}

/* ── Footer ──────────────────────────────────────────────────── */
.app-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 24px;
  background: var(--sidebar-bg);
  border-top: 1px solid var(--sidebar-border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--sidebar-muted);
}

/* ── Toast ───────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--sidebar-bg);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  font-family: 'Manrope', sans-serif;
  font-weight: 500;
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: #dc2626; }
.toast.success { background: #059669; }

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .app-main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .sidebar-panel {
    max-height: 45vh;
    border-right: none;
    border-bottom: 1px solid var(--sidebar-border);
  }
  .preview-pane {
    padding: 16px;
  }
  .preview-container {
    width: min(90vw, 360px);
    height: calc(min(90vw, 360px) * 16 / 9);
  }
  .preview-container .poster-stage {
    transform: scale(calc(min(90vw, 360px) / 1080));
  }
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 16px;
  }
  .form-row,
  .select-row,
  .btn-row { grid-template-columns: 1fr; }
  .tag-checkboxes { grid-template-columns: 1fr; }
}

/* ── Session History & Preset UI ───────────────────────────── */
.session-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.btn-sm {
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid var(--sidebar-border);
  background: var(--sidebar-surface);
  color: var(--sidebar-text);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-sm:hover {
  background: rgba(139, 92, 246, 0.15);
  border-color: var(--purple);
}

.btn-outline {
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid var(--sidebar-border);
  background: transparent;
  color: var(--sidebar-text);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  margin-bottom: 10px;
}
.btn-outline:hover {
  background: rgba(139, 92, 246, 0.15);
  border-color: var(--purple);
  color: var(--purple-soft);
}

.session-list {
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.session-list::-webkit-scrollbar { width: 4px; }
.session-list::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
}

.session-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--sidebar-surface);
  border-radius: 8px;
  border: 1px solid var(--sidebar-border);
  transition: border-color var(--transition), background var(--transition);
}
.session-card:hover {
  border-color: var(--purple);
  background: rgba(139, 92, 246, 0.08);
}

.session-thumb {
  width: 50px;
  height: 89px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.05);
}

.session-thumb-placeholder {
  width: 50px;
  height: 89px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--sidebar-muted);
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  border: 1px dashed var(--sidebar-border);
  flex-shrink: 0;
}

.session-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.session-info strong {
  font-size: 12px;
  color: var(--sidebar-text);
  font-family: 'JetBrains Mono', monospace;
}
.session-meta {
  font-size: 10px;
  color: var(--sidebar-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-btns {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

.btn-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sidebar-border);
  border-radius: 5px;
  background: transparent;
  color: var(--sidebar-muted);
  cursor: pointer;
  font-size: 11px;
  transition: all var(--transition);
}
.btn-icon:hover {
  color: var(--purple-soft);
  border-color: var(--purple);
  background: rgba(139, 92, 246, 0.12);
}
.btn-icon-danger:hover {
  color: #f87171;
  border-color: #f87171;
  background: rgba(248, 113, 113, 0.1);
}

.session-empty {
  text-align: center;
  padding: 20px 0;
  font-size: 11px;
  color: var(--sidebar-muted);
  font-style: italic;
}