/* ═══════════════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0E0E16;
  --surface:   #16161F;
  --raised:    #1E1E2E;
  --border:    #2A2A3E;
  --border2:   #3A3A52;
  --accent:    #7C5CFA;
  --accent2:   #5B8AF7;
  --text:      #E8E8F2;
  --muted:     #7070A0;
  --danger:    #EF4444;
  --radius:    10px;
  --radius-lg: 16px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

input, textarea, button, select { font-family: inherit; font-size: inherit; }

/* ═══════════════════════════════════════════════════
   UTILITIES
═══════════════════════════════════════════════════ */
.hidden { display: none !important; }

/* ═══════════════════════════════════════════════════
   LOADING OVERLAY
═══════════════════════════════════════════════════ */
.loading-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(14,14,22,0.88);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
}
.loading-card {
  background: var(--raised);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 40px 56px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}
.loading-spinner {
  width: 44px; height: 44px;
  border: 3px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-card p { color: var(--muted); font-size: 15px; }

/* ═══════════════════════════════════════════════════
   MODALS
═══════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(14,14,22,0.80);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal {
  background: var(--raised);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%; max-width: 520px;
  display: flex; flex-direction: column; gap: 16px;
}
.modal-sm { max-width: 380px; }
.modal-title { font-size: 18px; font-weight: 700; color: var(--text); }
.modal-desc  { color: var(--muted); font-size: 14px; }
.modal-textarea {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text);
  padding: 14px;
  width: 100%; min-height: 120px;
  resize: vertical;
  outline: none;
  font-size: 14px;
  line-height: 1.6;
  transition: border-color 0.15s;
}
.modal-textarea:focus { border-color: var(--accent); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ═══════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════ */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 10px 22px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}
.btn-primary:hover { opacity: 0.88; }
.btn-primary:active { transform: scale(0.97); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 10px 18px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.btn-ghost:hover { color: var(--text); border-color: var(--border2); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 10px 22px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-danger:hover { opacity: 0.85; }

.btn-sm {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-sm:hover { opacity: 0.85; }
.btn-sm.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border2);
}

/* ═══════════════════════════════════════════════════
   BRAND
═══════════════════════════════════════════════════ */
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { color: var(--accent); width: 26px; height: 26px; }
.brand-name { font-size: 18px; font-weight: 800; letter-spacing: -0.4px; color: var(--text); }
.brand-sm .brand-icon { width: 20px; height: 20px; }
.brand-sm .brand-name { font-size: 15px; }

/* ═══════════════════════════════════════════════════
   EMPTY STATE
═══════════════════════════════════════════════════ */
.empty-state {
  height: 100vh;
  display: flex; flex-direction: column;
  overflow-y: auto;
}
.empty-topbar {
  display: flex; align-items: center;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.empty-hero {
  flex: 1;
  display: flex; flex-direction: column; align-items: center;
  justify-content: center;
  padding: 48px 24px;
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
}
.empty-badge {
  display: inline-flex; align-items: center;
  background: linear-gradient(135deg, rgba(124,92,250,0.15), rgba(91,138,247,0.15));
  border: 1px solid rgba(124,92,250,0.35);
  color: #A78BFA;
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 14px; border-radius: 100px;
  margin-bottom: 20px;
}
.empty-headline {
  font-size: 48px; font-weight: 800; line-height: 1.15;
  letter-spacing: -1.5px;
  text-align: center;
  background: linear-gradient(135deg, #E8E8F2 40%, #A78BFA);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 14px;
}
.empty-sub {
  font-size: 16px; color: var(--muted);
  text-align: center; margin-bottom: 40px;
}
.empty-form {
  width: 100%;
  display: flex; flex-direction: column; gap: 14px;
}
.title-field {
  background: var(--raised);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text);
  padding: 14px 18px;
  font-size: 16px; font-weight: 600;
  outline: none; width: 100%;
  transition: border-color 0.15s;
}
.title-field:focus { border-color: var(--accent); }
.title-field::placeholder { color: var(--muted); font-weight: 400; }
.notes-field {
  background: var(--raised);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text);
  padding: 18px;
  font-size: 15px; line-height: 1.75;
  min-height: 240px; resize: vertical;
  outline: none; width: 100%;
  transition: border-color 0.15s;
}
.notes-field:focus { border-color: var(--accent); }
.notes-field::placeholder { color: var(--muted); }
.empty-form-actions {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.btn-generate {
  display: flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; border: none; border-radius: var(--radius);
  padding: 14px 28px;
  font-size: 15px; font-weight: 700; cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  box-shadow: 0 4px 20px rgba(124,92,250,0.35);
}
.btn-generate:hover { opacity: 0.9; }
.btn-generate:active { transform: scale(0.97); }
.divider-text { color: var(--muted); font-size: 13px; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text);
  border-radius: var(--radius);
  padding: 13px 20px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.btn-outline:hover { background: var(--raised); border-color: var(--border2); }
.api-key-hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.api-key-toggle { color: var(--accent); cursor: pointer; text-decoration: underline; }
.api-key-row { display: flex; gap: 8px; align-items: center; }
.api-key-field {
  flex: 1; background: var(--raised);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text); padding: 9px 14px;
  outline: none; font-size: 13px;
  transition: border-color 0.15s;
}
.api-key-field:focus { border-color: var(--accent); }

/* ═══════════════════════════════════════════════════
   EDITOR STATE
═══════════════════════════════════════════════════ */
.editor-state {
  height: 100vh; display: flex; flex-direction: column; overflow: hidden;
}

/* TOP BAR */
.topbar {
  display: flex; align-items: center; gap: 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 16px; height: 56px;
  flex-shrink: 0; z-index: 10;
}
.topbar-left  { display: flex; align-items: center; gap: 12px; min-width: 200px; }
.topbar-center{ flex: 1; display: flex; justify-content: center; }
.topbar-right { display: flex; align-items: center; gap: 14px; min-width: 200px; justify-content: flex-end; }

.btn-topbar {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border2);
  border-radius: 7px; padding: 5px 12px;
  font-size: 13px; cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.btn-topbar:hover { color: var(--text); border-color: var(--accent); }

.editor-title-input {
  background: transparent; border: none;
  color: var(--text); font-size: 15px; font-weight: 600;
  text-align: center; outline: none;
  width: 100%; max-width: 360px;
  padding: 6px 10px; border-radius: 7px;
  transition: background 0.15s;
}
.editor-title-input:hover { background: var(--raised); }
.editor-title-input:focus { background: var(--raised); }
.editor-title-input::placeholder { color: var(--muted); font-weight: 400; }

.theme-row { display: flex; gap: 5px; }
.theme-pill {
  background: transparent; border: 1px solid var(--border2);
  color: var(--muted); border-radius: 100px;
  padding: 4px 13px; font-size: 12px; font-weight: 600; cursor: pointer;
  transition: all 0.15s;
}
.theme-pill:hover { color: var(--text); border-color: var(--accent); }
.theme-pill.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.scale-row { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.scale-row input[type=range] { width: 80px; accent-color: var(--accent); cursor: pointer; }
#font-scale-label { font-size: 12px; color: var(--muted); min-width: 36px; }

.host-row { display: flex; align-items: center; gap: 6px; }
.host-label { font-size: 11px; color: var(--muted); white-space: nowrap; }
.host-field {
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px;
  padding: 5px 10px; font-size: 12px; width: 140px;
  outline: none; transition: border-color 0.15s;
}
.host-field:focus { border-color: var(--accent); }
.host-field::placeholder { color: var(--muted); }

.btn-export {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; border: none; border-radius: var(--radius);
  padding: 8px 20px; font-size: 13px; font-weight: 700; cursor: pointer;
  box-shadow: 0 2px 10px rgba(124,92,250,0.30);
  transition: opacity 0.15s, transform 0.1s; white-space: nowrap;
}
.btn-export:hover { opacity: 0.88; }
.btn-export:active { transform: scale(0.97); }

/* WORKSPACE */
.workspace { flex: 1; display: flex; overflow: hidden; }

/* FILMSTRIP */
.filmstrip {
  width: 188px; flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
}
.filmstrip-list {
  flex: 1; overflow-y: auto;
  padding: 12px 10px;
  display: flex; flex-direction: column; gap: 8px;
}
.filmstrip-list::-webkit-scrollbar { width: 4px; }
.filmstrip-list::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.filmstrip-thumb {
  width: 100%; aspect-ratio: 16/9;
  border-radius: 7px; border: 2px solid var(--border);
  cursor: pointer; position: relative; overflow: hidden;
  transition: border-color 0.15s, transform 0.1s;
  background: #111; flex-shrink: 0;
}
.filmstrip-thumb:hover { border-color: var(--border2); transform: scale(1.02); }
.filmstrip-thumb.active { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(124,92,250,0.25); }
.filmstrip-thumb canvas { width: 100%; height: 100%; display: block; }
.filmstrip-thumb-num {
  position: absolute; bottom: 4px; right: 6px;
  font-size: 10px; color: rgba(255,255,255,0.5);
  font-weight: 700; pointer-events: none;
}

.filmstrip-footer { padding: 10px; border-top: 1px solid var(--border); flex-shrink: 0; }
.btn-add-slide {
  width: 100%; background: transparent;
  border: 1px dashed var(--border2); color: var(--muted);
  border-radius: 7px; padding: 8px;
  font-size: 12px; font-weight: 600; cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.btn-add-slide:hover { color: var(--accent); border-color: var(--accent); background: rgba(124,92,250,0.06); }

/* MAIN PANEL */
.main-panel {
  flex: 1; display: flex; flex-direction: column;
  overflow-y: auto; background: var(--bg);
  padding: 20px 24px; gap: 16px;
}
.main-panel::-webkit-scrollbar { width: 5px; }
.main-panel::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

/* CANVAS PREVIEW */
.canvas-wrapper { display: flex; justify-content: center; flex-shrink: 0; }
.canvas-wrapper canvas {
  width: 100%; max-width: 880px; height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
  display: block;
}

/* SLIDE NAV */
.slide-nav {
  display: flex; align-items: center; gap: 10px;
  max-width: 880px; margin: 0 auto; width: 100%; flex-shrink: 0;
}
.nav-arrow {
  background: var(--raised); color: var(--text);
  border: 1px solid var(--border2); border-radius: 8px;
  width: 36px; height: 36px; font-size: 16px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}
.nav-arrow:hover { background: var(--border2); }
.nav-arrow:disabled { opacity: 0.35; cursor: not-allowed; }
.slide-counter { font-size: 13px; color: var(--muted); font-weight: 600; min-width: 48px; text-align: center; }
.nav-spacer { flex: 1; }
.btn-ai {
  background: linear-gradient(135deg, rgba(124,92,250,0.18), rgba(91,138,247,0.18));
  border: 1px solid rgba(124,92,250,0.40); color: #A78BFA;
  border-radius: 8px; padding: 7px 16px;
  font-size: 13px; font-weight: 700; cursor: pointer;
  transition: background 0.15s;
}
.btn-ai:hover { background: linear-gradient(135deg, rgba(124,92,250,0.28), rgba(91,138,247,0.28)); }
.btn-delete {
  background: transparent; border: 1px solid var(--border2);
  color: var(--danger); border-radius: 8px; padding: 7px 14px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn-delete:hover { background: rgba(239,68,68,0.08); border-color: var(--danger); }

/* EDIT PANEL */
.edit-panel {
  max-width: 880px; margin: 0 auto; width: 100%;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  display: flex; flex-direction: column; gap: 20px;
  flex-shrink: 0; margin-bottom: 20px;
}
.ep-field { display: flex; flex-direction: column; gap: 8px; }
.ep-label {
  font-size: 11px; font-weight: 700; letter-spacing: 0.8px;
  text-transform: uppercase; color: var(--muted);
}
.ep-input {
  background: var(--raised); border: 1px solid var(--border2);
  border-radius: var(--radius); color: var(--text);
  padding: 12px 16px; font-size: 15px; font-weight: 600;
  outline: none; width: 100%; transition: border-color 0.15s;
}
.ep-input:focus { border-color: var(--accent); }
.ep-input::placeholder { color: var(--muted); font-weight: 400; font-size: 14px; }
.ep-input.subtitle { font-size: 14px; font-weight: 400; }
.ep-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.ep-split-row { display: flex; align-items: center; gap: 12px; }
.ep-split-row input[type=range] { flex: 1; accent-color: var(--accent); cursor: pointer; }
.ep-split-label { font-size: 13px; font-weight: 700; color: var(--muted); width: 38px; text-align: right; flex-shrink: 0; }

.bullet-list { display: flex; flex-direction: column; gap: 8px; }
.bullet-row { display: flex; gap: 8px; align-items: flex-start; }
.bullet-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0; margin-top: 14px;
}
.bullet-input {
  flex: 1; background: var(--raised);
  border: 1px solid var(--border2); border-radius: var(--radius);
  color: var(--text); padding: 10px 14px;
  font-size: 14px; line-height: 1.6;
  outline: none; resize: vertical; min-height: 44px;
  transition: border-color 0.15s;
}
.bullet-input:focus { border-color: var(--accent); }
.bullet-remove {
  background: transparent; border: none; color: var(--muted);
  cursor: pointer; font-size: 18px; line-height: 1;
  padding: 6px; border-radius: 6px; margin-top: 6px;
  transition: color 0.15s, background 0.15s;
}
.bullet-remove:hover { color: var(--danger); background: rgba(239,68,68,0.1); }
.btn-add-bullet {
  background: transparent; border: 1px dashed var(--border2);
  color: var(--muted); border-radius: var(--radius);
  padding: 9px; font-size: 13px; font-weight: 600; cursor: pointer; width: 100%;
  transition: color 0.15s, border-color 0.15s;
}
.btn-add-bullet:hover { color: var(--accent); border-color: var(--accent); }

.table-editor { display: flex; flex-direction: column; gap: 8px; }
.table-row-edit { display: flex; gap: 8px; }
.table-cell-input {
  flex: 1; background: var(--raised);
  border: 1px solid var(--border2); border-radius: 7px;
  color: var(--text); padding: 8px 12px; font-size: 13px;
  outline: none; transition: border-color 0.15s;
}
.table-cell-input:focus { border-color: var(--accent); }
.table-cell-input.header { font-weight: 700; }
.btn-add-row {
  background: transparent; border: 1px dashed var(--border2);
  color: var(--muted); border-radius: 7px; padding: 7px;
  font-size: 12px; cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.btn-add-row:hover { color: var(--accent); border-color: var(--accent); }
.btn-row-del {
  background: transparent; border: none; color: var(--muted);
  cursor: pointer; font-size: 16px; padding: 4px 6px; border-radius: 6px;
  transition: color 0.15s;
}
.btn-row-del:hover { color: var(--danger); }

.ep-icon-row { display: flex; align-items: center; gap: 12px; }
.ep-icon-preview { font-size: 28px; }
.ep-icon-input {
  background: var(--raised); border: 1px solid var(--border2);
  border-radius: var(--radius); color: var(--text);
  padding: 8px 12px; font-size: 20px;
  outline: none; width: 70px; text-align: center;
  transition: border-color 0.15s;
}
.ep-icon-input:focus { border-color: var(--accent); }
.ep-step-input {
  background: var(--raised); border: 1px solid var(--border2);
  border-radius: var(--radius); color: var(--text);
  padding: 9px 14px; font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.5px;
  outline: none; transition: border-color 0.15s;
}
.ep-step-input:focus { border-color: var(--accent); }

/* SPARSE CONTENT HINT */
.sparse-hint {
  display: flex; align-items: center; gap: 10px;
  background: rgba(124,92,250,0.07);
  border: 1px dashed rgba(124,92,250,0.35);
  border-radius: var(--radius); padding: 12px 14px;
  margin-top: 12px; color: var(--muted);
}
.sparse-hint svg { flex-shrink: 0; opacity: 0.7; }
.sparse-hint-text {
  flex: 1; display: flex; flex-direction: column; gap: 2px;
}
.sparse-hint-text span:first-child {
  font-size: 12px; font-weight: 600; color: var(--text);
}
.sparse-hint-text span:last-child { font-size: 11px; }
.sparse-regen-btn {
  background: transparent; border: 1px solid rgba(124,92,250,0.45);
  color: var(--accent); border-radius: 8px;
  padding: 5px 12px; font-size: 12px; font-weight: 600;
  cursor: pointer; white-space: nowrap; transition: background 0.15s, border-color 0.15s;
}
.sparse-regen-btn:hover { background: rgba(124,92,250,0.15); border-color: var(--accent); }