/* ═══════════════════════════════════════════════════════════════
   EPILDA v2.0 — Multi-Theme + Mobile Responsive Styles
   Themes: dark (default) | midnight | light | ocean | forest | neon | sunset
   ═══════════════════════════════════════════════════════════════ */

/* ── Theme Variables ─────────────────────────────────────────── */
:root,
[data-theme="dark"] {
  --epilda-bg:        #0a0a0f;
  --epilda-card:      #0f0f18;
  --epilda-card-2:    #12121e;
  --epilda-border:    #1e1e2e;
  --epilda-gold:      #f59e0b;
  --epilda-gold-dim:  rgba(245,158,11,.12);
  --epilda-muted:     #6b7280;
  --epilda-text:      #e2e8f0;
  --epilda-text-soft: #94a3b8;
  --epilda-sidebar:   #08080f;
  --epilda-overlay:   rgba(0,0,0,.7);
  --sidebar-width:    240px;
}

[data-theme="midnight"] {
  --epilda-bg:        #000008;
  --epilda-card:      #070712;
  --epilda-card-2:    #0b0b1a;
  --epilda-border:    #1a1a30;
  --epilda-gold:      #818cf8;
  --epilda-gold-dim:  rgba(129,140,248,.12);
  --epilda-muted:     #4b5563;
  --epilda-text:      #c7d2fe;
  --epilda-text-soft: #818cf8;
  --epilda-sidebar:   #050510;
  --epilda-overlay:   rgba(0,0,16,.8);
}

[data-theme="light"] {
  --epilda-bg:        #f8fafc;
  --epilda-card:      #ffffff;
  --epilda-card-2:    #f1f5f9;
  --epilda-border:    #e2e8f0;
  --epilda-gold:      #d97706;
  --epilda-gold-dim:  rgba(217,119,6,.08);
  --epilda-muted:     #94a3b8;
  --epilda-text:      #0f172a;
  --epilda-text-soft: #475569;
  --epilda-sidebar:   #1e293b;
  --epilda-overlay:   rgba(255,255,255,.7);
}

[data-theme="ocean"] {
  --epilda-bg:        #020c18;
  --epilda-card:      #051428;
  --epilda-card-2:    #071c38;
  --epilda-border:    #0d2d50;
  --epilda-gold:      #22d3ee;
  --epilda-gold-dim:  rgba(34,211,238,.1);
  --epilda-muted:     #334155;
  --epilda-text:      #bae6fd;
  --epilda-text-soft: #7dd3fc;
  --epilda-sidebar:   #010a14;
  --epilda-overlay:   rgba(2,12,24,.8);
}

[data-theme="forest"] {
  --epilda-bg:        #020e06;
  --epilda-card:      #061410;
  --epilda-card-2:    #081a14;
  --epilda-border:    #0d2d1e;
  --epilda-gold:      #4ade80;
  --epilda-gold-dim:  rgba(74,222,128,.1);
  --epilda-muted:     #374151;
  --epilda-text:      #bbf7d0;
  --epilda-text-soft: #86efac;
  --epilda-sidebar:   #010a06;
  --epilda-overlay:   rgba(2,14,6,.8);
}

[data-theme="neon"] {
  --epilda-bg:        #06000f;
  --epilda-card:      #0c0018;
  --epilda-card-2:    #110020;
  --epilda-border:    #2d0060;
  --epilda-gold:      #e879f9;
  --epilda-gold-dim:  rgba(232,121,249,.1);
  --epilda-muted:     #4c1d95;
  --epilda-text:      #f5d0fe;
  --epilda-text-soft: #d946ef;
  --epilda-sidebar:   #040009;
  --epilda-overlay:   rgba(6,0,15,.85);
}

[data-theme="sunset"] {
  --epilda-bg:        #0f0501;
  --epilda-card:      #180b03;
  --epilda-card-2:    #1e1005;
  --epilda-border:    #3d1a08;
  --epilda-gold:      #fb923c;
  --epilda-gold-dim:  rgba(251,146,60,.1);
  --epilda-muted:     #78350f;
  --epilda-text:      #fde8d8;
  --epilda-text-soft: #fdba74;
  --epilda-sidebar:   #0a0300;
  --epilda-overlay:   rgba(15,5,1,.8);
}

/* ── Base ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--epilda-bg);
  color: var(--epilda-text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  transition: background .3s, color .3s;
}

/* ── Layout ──────────────────────────────────────────────────── */
.app-wrapper { display: flex; min-height: 100vh; }

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--epilda-sidebar);
  border-right: 1px solid var(--epilda-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  flex-shrink: 0;
  transition: transform .3s, background .3s;
  z-index: 200;
}
.sidebar-brand span { color: var(--epilda-text); }
.sidebar .nav-link {
  color: var(--epilda-muted);
  border-radius: 8px;
  padding: .5rem .75rem;
  font-size: .9rem;
  transition: background .15s, color .15s;
}
.sidebar .nav-link:hover { background: var(--epilda-border); color: var(--epilda-text); }
.sidebar .nav-link.active { background: var(--epilda-border); color: var(--epilda-gold); }
.sidebar .nav-link.active i { color: var(--epilda-gold); }
.sidebar-footer { background: var(--epilda-border); color: var(--epilda-text); border-radius: 8px; }

/* Mobile sidebar overlay */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 199;
}

/* ── Mobile Header ───────────────────────────────────────────── */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--epilda-sidebar);
  border-bottom: 1px solid var(--epilda-border);
  padding: .75rem 1rem;
  align-items: center;
  gap: .75rem;
}
.mobile-brand { font-weight: 700; color: var(--epilda-text); font-size: 1rem; }
.hamburger-btn {
  background: none; border: none; color: var(--epilda-text);
  padding: .25rem; font-size: 1.4rem; cursor: pointer; line-height: 1;
}

/* ── Main content ────────────────────────────────────────────── */
.main-content {
  flex: 1;
  overflow-x: hidden;
  min-width: 0;
  padding: 2rem 2.5rem;
  transition: background .3s;
}

/* ── Cards ───────────────────────────────────────────────────── */
.card {
  background: var(--epilda-card);
  border: 1px solid var(--epilda-border);
  border-radius: 12px;
  transition: border-color .2s, background .3s;
}
.card:hover { border-color: color-mix(in srgb, var(--epilda-gold) 25%, transparent); }
.card-header { background: transparent; border-bottom: 1px solid var(--epilda-border); }

/* ── Stat cards ──────────────────────────────────────────────── */
.stat-card { transition: border-color .2s, transform .15s; }
.stat-card:hover { transform: translateY(-2px); }
.stat-card .stat-num { font-size: 2rem; font-weight: 700; color: var(--epilda-text); }
.stat-card .stat-label { font-size: .8rem; color: var(--epilda-muted); }
.stat-card-gold {
  border-color: color-mix(in srgb, var(--epilda-gold) 30%, transparent) !important;
  background: color-mix(in srgb, var(--epilda-gold) 6%, transparent) !important;
}

/* ── Status badges ───────────────────────────────────────────── */
.badge-draft     { background: color-mix(in srgb,#6b7280 20%,transparent); color: #9ca3af; }
.badge-analyzing { background: color-mix(in srgb,var(--epilda-gold) 20%,transparent); color: var(--epilda-gold); }
.badge-ready     { background: rgba(59,130,246,.2); color: #60a5fa; }
.badge-exporting { background: rgba(99,102,241,.2); color: #818cf8; }
.badge-completed { background: rgba(16,185,129,.2); color: #34d399; }
.badge-failed    { background: rgba(239,68,68,.2);  color: #f87171; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn-gold { background: var(--epilda-gold); color: #0a0a0f; font-weight: 600; border: none; }
.btn-gold:hover { filter: brightness(1.1); color: #0a0a0f; }
.btn-ghost { background: var(--epilda-border); color: var(--epilda-text); border: 1px solid var(--epilda-border); }
.btn-ghost:hover { background: color-mix(in srgb, var(--epilda-border) 70%, white 30%); color: var(--epilda-text); }

/* ── Forms ───────────────────────────────────────────────────── */
.form-control, .form-select {
  background: var(--epilda-sidebar);
  border: 1px solid var(--epilda-border);
  color: var(--epilda-text);
  border-radius: 8px;
}
.form-control:focus, .form-select:focus {
  background: var(--epilda-sidebar);
  border-color: var(--epilda-gold);
  color: var(--epilda-text);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--epilda-gold) 20%, transparent);
}
.form-control::placeholder { color: var(--epilda-muted); }
.form-range::-webkit-slider-thumb { background: var(--epilda-gold); }
.form-check-input:checked { background-color: var(--epilda-gold); border-color: var(--epilda-gold); }
textarea.form-control { resize: vertical; }
.input-group-text { background: var(--epilda-sidebar); border-color: var(--epilda-border); color: var(--epilda-muted); }
select option { background: var(--epilda-card); color: var(--epilda-text); }

/* ── Tabs ────────────────────────────────────────────────────── */
.nav-tabs { border-bottom: 1px solid var(--epilda-border); overflow-x: auto; flex-wrap: nowrap; }
.nav-tabs::-webkit-scrollbar { height: 0; }
.nav-tabs .nav-link {
  color: var(--epilda-muted);
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  padding: .6rem 1rem;
  font-size: .9rem;
  white-space: nowrap;
}
.nav-tabs .nav-link:hover { color: var(--epilda-text); background: transparent; }
.nav-tabs .nav-link.active { color: var(--epilda-gold); border-bottom-color: var(--epilda-gold); background: transparent; }
.tab-content { padding-top: 1.25rem; }

/* ── Scene cards ─────────────────────────────────────────────── */
.scene-card { border-radius: 10px; transition: border-color .2s; }
.scene-card .scene-num { font-size: 2rem; font-weight: 800; color: color-mix(in srgb,var(--epilda-gold) 25%,transparent); min-width: 2.5rem; line-height: 1; }
.scene-body { display: none; }
.scene-body.show { display: block; }
.prompt-box {
  background: var(--epilda-sidebar);
  border: 1px solid var(--epilda-border);
  border-radius: 8px;
  padding: .75rem;
  font-size: .78rem;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.6;
  color: var(--epilda-text-soft);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Upload zone ─────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--epilda-border);
  border-radius: 12px;
  padding: 2.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--epilda-gold);
  background: var(--epilda-gold-dim);
}

/* ── Progress ────────────────────────────────────────────────── */
.progress { background: var(--epilda-border); border-radius: 99px; }
.progress-bar.bg-gold { background: var(--epilda-gold); }

/* ── Provider badges ─────────────────────────────────────────── */
.provider-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .15rem .5rem;
  border-radius: 99px;
  font-size: .7rem;
  font-weight: 600;
  border: 1px solid;
}
.provider-badge.free { border-color: rgba(16,185,129,.4); color: #34d399; background: rgba(16,185,129,.08); }
.provider-badge.paid { border-color: color-mix(in srgb,var(--epilda-gold) 40%,transparent); color: var(--epilda-gold); background: var(--epilda-gold-dim); }

/* ── Pulse ring ──────────────────────────────────────────────── */
.pulse-ring { width: 80px; height: 80px; position: relative; margin: 0 auto; }
.pulse-ring::before, .pulse-ring::after {
  content: ''; position: absolute; inset: 0;
  border-radius: 50%;
  border: 2px solid var(--epilda-gold);
  animation: ring 2s ease-out infinite;
}
.pulse-ring::after { animation-delay: .8s; }
@keyframes ring { 0%{transform:scale(.7);opacity:.7} 100%{transform:scale(1.4);opacity:0} }

/* ── Export buttons ──────────────────────────────────────────── */
.export-btn {
  background: var(--epilda-card);
  border: 1px solid var(--epilda-border);
  border-radius: 10px;
  padding: 1rem;
  text-align: left;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  color: var(--epilda-text);
  width: 100%;
}
.export-btn:hover { border-color: var(--epilda-gold); background: var(--epilda-gold-dim); }

/* ── API Key rows ────────────────────────────────────────────── */
.key-row { border: 1px solid var(--epilda-border); border-radius: 8px; padding: .65rem 1rem; transition: border-color .2s; }
.key-row:hover { border-color: color-mix(in srgb,var(--epilda-gold) 25%,transparent); }
.key-row.inactive { opacity: .5; }

/* ── Example URLs ────────────────────────────────────────────── */
.example-url {
  background: var(--epilda-card);
  border: 1px solid var(--epilda-border);
  border-radius: 8px;
  padding: .5rem .75rem;
  font-size: .8rem;
  color: var(--epilda-muted);
  cursor: pointer;
  transition: border-color .2s, color .2s;
  text-align: left;
  width: 100%;
}
.example-url:hover { border-color: color-mix(in srgb,var(--epilda-gold) 30%,transparent); color: var(--epilda-text); }

/* ── Activity feed ───────────────────────────────────────────── */
.activity-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--epilda-gold); flex-shrink: 0; }

/* ── Generation pipeline ─────────────────────────────────────── */
.step-badge { width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;flex-shrink:0; }
.step-badge.pending { background:var(--epilda-border);color:var(--epilda-muted); }
.step-badge.done    { background:rgba(16,185,129,.2);color:#34d399; }
.step-badge.partial { background:color-mix(in srgb,var(--epilda-gold) 20%,transparent);color:var(--epilda-gold); }
.step-badge.running { background:rgba(99,102,241,.2);color:#818cf8;animation:pulse-badge 1.5s infinite; }
@keyframes pulse-badge { 0%,100%{opacity:1} 50%{opacity:.5} }

.scene-thumb-mini { width:48px;height:36px;border-radius:4px;overflow:hidden;border:1px solid var(--epilda-border);flex-shrink:0; }
.scene-thumb-mini img { width:100%;height:100%;object-fit:cover; }
.scene-thumb-placeholder { width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:.7rem;color:var(--epilda-muted);background:var(--epilda-border); }
.scene-img-placeholder { aspect-ratio:16/9;background:var(--epilda-border);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--epilda-muted);font-size:.75rem; }

/* ── Template cards ──────────────────────────────────────────── */
.template-card { transition: transform .15s, border-color .15s; }
.template-card:hover { transform: translateY(-3px); }
.template-icon { width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0; }

/* ── Theme switcher ──────────────────────────────────────────── */
.theme-swatch {
  width: 22px; height: 22px; border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color .15s, transform .15s;
  flex-shrink: 0;
}
.theme-swatch:hover, .theme-swatch.active { border-color: var(--epilda-gold); transform: scale(1.15); }
.theme-swatch.active { border-color: #fff; }

/* ── Free plan banner ────────────────────────────────────────── */
.free-plan-banner {
  background: color-mix(in srgb, var(--epilda-gold) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--epilda-gold) 30%, transparent);
  border-radius: 10px;
  padding: .75rem 1rem;
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-content { background: var(--epilda-card); border: 1px solid var(--epilda-border); }
.modal-header, .modal-footer { border-color: var(--epilda-border); }

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--epilda-bg); }
::-webkit-scrollbar-thumb { background: var(--epilda-border); border-radius: 99px; }

/* ── Misc helpers ────────────────────────────────────────────── */
.text-gold   { color: var(--epilda-gold) !important; }
.border-gold { border-color: color-mix(in srgb, var(--epilda-gold) 30%, transparent) !important; }
.bg-gold-dim { background: var(--epilda-gold-dim) !important; }
.rounded-10  { border-radius: 10px; }
.fs-tiny     { font-size: .75rem; }
.animate-fade { animation: fadeIn .4s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:none} }
.text-muted  { color: var(--epilda-muted) !important; }
.border-secondary { border-color: var(--epilda-border) !important; }
.bg-secondary { background: var(--epilda-border) !important; }

/* ── Toast ───────────────────────────────────────────────────── */
.toast { border-radius: 10px; }
#toast-container .toast { max-width: 380px; }

/* ── Video preview ───────────────────────────────────────────── */
.video-preview-card { background:#000;border-radius:10px;overflow:hidden;border:1px solid var(--epilda-border); }
.video-preview-card video { width:100%;display:block;max-height:300px;object-fit:contain; }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (≤1024px)
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .sidebar { width: 200px; min-width: 200px; }
  --sidebar-width: 200px;
  .main-content { padding: 1.5rem; }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile (≤768px)
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Show mobile header, hide sidebar by default */
  .mobile-header { display: flex; }
  .sidebar {
    position: fixed;
    left: -260px;
    top: 0;
    height: 100%;
    width: 260px;
    min-width: 260px;
    box-shadow: 4px 0 24px rgba(0,0,0,.5);
  }
  .sidebar.open { left: 0; transform: none; }
  .sidebar-overlay.show { display: block; }
  .main-content { padding: 1rem; padding-top: .75rem; }
  .app-wrapper { flex-direction: column; }

  /* Cards */
  .card { border-radius: 10px; }

  /* Stat grid */
  .stat-card .stat-num { font-size: 1.5rem; }

  /* Scene toggle */
  .scene-card .scene-num { font-size: 1.5rem; min-width: 2rem; }

  /* Nav tabs: scroll horizontally */
  .nav-tabs { overflow-x: auto; white-space: nowrap; }
  .nav-tabs .nav-link { padding: .5rem .75rem; font-size: .85rem; }

  /* Generation pipeline */
  .step-card .d-flex { flex-wrap: wrap; }
  .step-card select, .step-card button { font-size: .8rem; }

  /* Template grid */
  .template-card-wrap { width: 100%; }

  /* Export buttons */
  .export-btn { padding: .75rem; }

  /* Generation page: right panel goes below */
  .col-lg-4.sticky-top { position: static; }

  /* Upload zone: smaller on mobile */
  .upload-zone { padding: 1.5rem 1rem; }

  /* Modal */
  .modal-dialog { margin: .5rem; }

  /* Hide non-essential sidebar footer */
  .sidebar-footer .small:last-child { display: none; }

  /* Scene image grid: 3 cols on mobile */
  #image-grid .col-4 { padding: .25rem; }

  /* Provider badges in sidebar */
  .sidebar .integration-row { font-size: .7rem; }

  /* Project header stack */
  .project-header .d-flex { flex-direction: column; align-items: flex-start !important; }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE — Small Mobile (≤480px)
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 480px) {
  .main-content { padding: .75rem; }
  h1.h3 { font-size: 1.2rem; }
  .btn { font-size: .82rem; padding: .35rem .7rem; }
  .stat-card { padding: .75rem !important; }
  .stat-card .stat-num { font-size: 1.3rem; }
  .col-6.col-md-4 { width: 50%; }
  .generate-step-row { gap: .5rem !important; }
  .generate-step-row select { font-size: .75rem; padding: .2rem .4rem; }
}

/* ═══════════════════════════════════════════════════════════════
   LIGHT THEME OVERRIDES
   ═══════════════════════════════════════════════════════════════ */
[data-theme="light"] body { color: #0f172a; }
[data-theme="light"] .sidebar { background: #1e293b; }
[data-theme="light"] .sidebar .nav-link { color: #94a3b8; }
[data-theme="light"] .sidebar .nav-link:hover { background: #334155; color: #f1f5f9; }
[data-theme="light"] .sidebar .nav-link.active { background: #334155; color: #fbbf24; }
[data-theme="light"] .sidebar-brand span { color: #f1f5f9; }
[data-theme="light"] .sidebar-footer { background: #334155; color: #f1f5f9; }
[data-theme="light"] .card { box-shadow: 0 1px 3px rgba(0,0,0,.08); }
[data-theme="light"] .form-control,
[data-theme="light"] .form-select { background: #fff; color: #0f172a; border-color: #e2e8f0; }
[data-theme="light"] .form-control:focus,
[data-theme="light"] .form-select:focus { background: #fff; color: #0f172a; }
[data-theme="light"] .prompt-box { background: #f8fafc; color: #475569; }
[data-theme="light"] .upload-zone { border-color: #e2e8f0; }
[data-theme="light"] select option { background: #fff; color: #0f172a; }
[data-theme="light"] .modal-content { background: #fff; }
[data-theme="light"] .text-muted { color: #64748b !important; }
[data-theme="light"] .mobile-header { background: #1e293b; border-color: #334155; }
[data-theme="light"] .mobile-brand { color: #f1f5f9; }
[data-theme="light"] .hamburger-btn { color: #f1f5f9; }