/* ==========================================================================
   AI Karaoke Maker — Saffron & Marigold theme
   Warm light theme: saffron orange + marigold gold on a warm paper ground,
   with a small tulsi-green accent for "done" states.
   ========================================================================== */

:root {
  --ak-paper: #fffdf9;
  --ak-surface: #fff3e6;
  --ak-surface-2: #fce7d1;
  --ak-line: #f0dec4;
  --ak-ink: #2b1b0e;
  --ak-muted: #8a7a6b;
  --ak-saffron: #f2650c;
  --ak-saffron-strong: #c24e00;
  --ak-marigold: #d9a200;
  --ak-marigold-strong: #a67c00;
  --ak-tulsi: #0f7a5c;
  --ak-tint: #fdebd8;
  --ak-tint-line: #f6d9b6;
  --ak-radius: 1rem;
}

* {
  scrollbar-color: var(--ak-marigold) transparent;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1100px 550px at 12% -12%, rgba(242, 101, 12, 0.10), transparent 60%),
    radial-gradient(900px 480px at 105% 8%, rgba(217, 162, 0, 0.12), transparent 60%),
    radial-gradient(800px 620px at 50% 115%, rgba(15, 122, 92, 0.07), transparent 60%),
    var(--ak-paper);
  color: var(--ak-ink);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  display: flex;
  flex-direction: column;
}

.app-main {
  flex: 1 0 auto;
}

/* ---- Navbar --------------------------------------------------------- */
.app-navbar {
  background: rgba(255, 253, 249, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--ak-line);
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.65rem;
  background: linear-gradient(135deg, var(--ak-saffron), var(--ak-marigold));
  color: #fff;
  font-size: 1.05rem;
}

.brand-text {
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--ak-ink);
}

.app-navbar .nav-link {
  color: var(--ak-muted);
  font-weight: 500;
}

.app-navbar .nav-link:hover,
.app-navbar .nav-link.active {
  color: var(--ak-saffron-strong);
}

/* ---- Cards ------------------------------------------------------------ */
.glass-card {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--ak-line);
  border-radius: var(--ak-radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(178, 108, 20, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.glass-card:hover {
  border-color: var(--ak-tint-line);
}

.hero-section {
  padding: 5.5rem 0 4rem;
}

.hero-title {
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  background: linear-gradient(120deg, var(--ak-ink) 35%, var(--ak-saffron));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  color: var(--ak-muted);
  font-size: 1.1rem;
  max-width: 640px;
}

.badge-tint {
  color: var(--ak-saffron-strong);
  background: var(--ak-tint);
  border: 1px solid var(--ak-tint-line);
}

.gradient-btn {
  background: linear-gradient(135deg, var(--ak-saffron), var(--ak-marigold));
  border: none;
  color: #fff;
  font-weight: 600;
  border-radius: 0.75rem;
  padding: 0.85rem 1.75rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 10px 30px rgba(242, 101, 12, 0.28);
}

.gradient-btn:hover,
.gradient-btn:focus {
  transform: translateY(-2px);
  filter: brightness(1.05);
  color: #fff;
  box-shadow: 0 14px 36px rgba(242, 101, 12, 0.36);
}

.gradient-btn:disabled {
  opacity: 0.6;
  transform: none;
}

.form-control-ak {
  background: #fffefc;
  border: 1px solid var(--ak-line);
  color: var(--ak-ink);
  border-radius: 0.75rem;
  padding: 0.85rem 1.1rem;
}

.form-control-ak:focus {
  background: #fff;
  border-color: var(--ak-saffron);
  color: var(--ak-ink);
  box-shadow: 0 0 0 0.2rem rgba(242, 101, 12, 0.16);
}

.form-control-ak::placeholder {
  color: var(--ak-muted);
}

/* ---- Steps / feature strip -------------------------------------------- */
.step-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(242, 101, 12, 0.14), rgba(217, 162, 0, 0.16));
  color: var(--ak-saffron-strong);
  font-size: 1.3rem;
}

/* ---- Progress page ----------------------------------------------------- */
.stage-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.stage-item {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--ak-line);
  opacity: 0.55;
  transition: opacity 0.3s ease;
}

.stage-item:last-child {
  border-bottom: none;
}

.stage-item.active,
.stage-item.done {
  opacity: 1;
}

.stage-dot {
  width: 2.1rem;
  height: 2.1rem;
  flex: 0 0 auto;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ak-surface);
  border: 1px solid var(--ak-line);
  color: var(--ak-muted);
  font-size: 0.9rem;
}

.stage-item.done .stage-dot {
  background: linear-gradient(135deg, var(--ak-tulsi), #0a5a43);
  border-color: transparent;
  color: #fff;
}

.stage-item.active .stage-dot {
  background: linear-gradient(135deg, var(--ak-saffron), var(--ak-marigold));
  border-color: transparent;
  color: #fff;
  animation: pulse-glow 1.6s ease-in-out infinite;
}

.stage-item.failed .stage-dot {
  background: #d33a2c;
  border-color: transparent;
  color: #fff;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(242, 101, 12, 0.35); }
  50% { box-shadow: 0 0 0 8px rgba(242, 101, 12, 0); }
}

.progress-ak {
  height: 0.65rem;
  border-radius: 999px;
  background: var(--ak-surface);
  border: 1px solid var(--ak-line);
  overflow: hidden;
}

.progress-ak .progress-bar {
  background: linear-gradient(90deg, var(--ak-saffron), var(--ak-marigold));
}

.log-console {
  background: #201207;
  border: 1px solid #3a230f;
  border-radius: 0.75rem;
  padding: 0.9rem 1rem;
  font-family: 'Cascadia Code', Consolas, monospace;
  font-size: 0.8rem;
  color: #f3d9a8;
  max-height: 260px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ---- Background selection cards ---------------------------------------- */
.bg-choice-card {
  cursor: pointer;
  overflow: hidden;
  position: relative;
}

.bg-choice-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.bg-choice-card:hover img {
  transform: scale(1.04);
}

.bg-choice-card.selected {
  border-color: var(--ak-saffron);
  box-shadow: 0 0 0 3px rgba(242, 101, 12, 0.30);
}

.bg-choice-card .check-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--ak-saffron);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
}

.bg-choice-card.selected .check-badge {
  display: flex;
}

/* ---- Footer -------------------------------------------------------- */
.app-footer {
  border-top: 1px solid var(--ak-line);
  margin-top: 3rem;
}

/* ---- Utility -------------------------------------------------------- */
.text-gradient {
  background: linear-gradient(120deg, var(--ak-saffron-strong), var(--ak-marigold-strong));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tint-box {
  background: var(--ak-tint);
  border: 1px solid var(--ak-tint-line);
}

video.karaoke-preview {
  width: 100%;
  border-radius: var(--ak-radius);
  background: #000;
  box-shadow: 0 12px 40px rgba(43, 27, 14, 0.25);
}

@media (max-width: 767.98px) {
  .hero-section { padding: 3rem 0 2.5rem; }
}