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

:root {
  --bg: #0e0e11;
  --bg-card: #16161a;
  --bg-card-hover: #1c1c22;
  --bg-input: #1e1e24;
  --border: #2a2a32;
  --text: #e0e0e6;
  --text-dim: #8888a0;
  --accent: #6c5ce7;
  --accent-hover: #7e70f0;
  --green: #2ed573;
  --yellow: #ffc107;
  --red: #e63946;
  --blue: #3b82f6;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 12px rgba(0,0,0,.4);
}

html { font-size: 15px; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ─── Header ───────────────────────────────────────────── */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14,14,17,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: .9rem 1.5rem;
}
.logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text) !important;
  letter-spacing: -.02em;
}

/* ─── Layout ───────────────────────────────────────────── */
#app {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* ─── Home: Project List ───────────────────────────────── */
.page-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -.03em;
}

.project-grid {
  display: grid;
  gap: 1rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
}
.project-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: .35rem;
}
.project-card .brief {
  color: var(--text-dim);
  font-size: .85rem;
  margin-bottom: .75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.project-meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .8rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

/* Progress bar */
.progress-bar {
  flex: 1;
  min-width: 80px;
  max-width: 160px;
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar .fill {
  height: 100%;
  border-radius: 3px;
  transition: width .3s;
}

/* Status badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .15rem .55rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.badge.in_progress { background: rgba(108,92,231,.18); color: var(--accent); }
.badge.completed { background: rgba(46,213,115,.15); color: var(--green); }
.badge.cancelled { background: rgba(230,57,70,.15); color: var(--red); }

.badge.freepik { background: rgba(59,130,246,.15); color: var(--blue); }
.badge.kling { background: rgba(255,193,7,.15); color: var(--yellow); }

.badge.best-pick {
  background: rgba(46,213,115,.15); color: var(--green);
  gap: .3rem;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-dim);
}
.empty-state p { font-size: 1rem; }

/* ─── Project Detail ───────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .85rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}
.back-link:hover { color: var(--text); }

.project-header {
  margin-bottom: 2rem;
}
.project-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .3rem;
  letter-spacing: -.02em;
}
.project-header .brief {
  color: var(--text-dim);
  font-size: .9rem;
  margin-bottom: .75rem;
}
.project-header .project-meta { margin-bottom: 0; }

/* Progress large */
.progress-lg {
  width: 100%;
  max-width: 280px;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
}
.progress-lg .fill {
  height: 100%;
  border-radius: 4px;
  transition: width .3s;
}

/* Todos */
.section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: .75rem;
}

.todo-list { list-style: none; margin-bottom: 2rem; }
.todo-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .45rem 0;
  font-size: .9rem;
  border-bottom: 1px solid var(--border);
}
.todo-item:last-child { border-bottom: none; }
.todo-item.done { color: var(--text-dim); text-decoration: line-through; }
.todo-check {
  width: 18px; height: 18px;
  border-radius: 4px;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  font-size: .7rem;
  transition: all .15s;
}
.todo-item.done .todo-check {
  border-color: var(--green);
  background: var(--green);
  color: #000;
}

/* Steps timeline */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.step {
  position: relative;
  margin-bottom: 1.5rem;
}
.step::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg);
}
.step.type-text::before { border-color: var(--text-dim); }
.step.type-media_generation::before { border-color: var(--blue); background: var(--blue); }
.step.type-feedback::before { border-color: var(--yellow); background: var(--yellow); }
.step.type-review::before { border-color: var(--accent); background: var(--accent); }
.step.type-learning::before { border-color: var(--green); background: var(--green); }
.step.type-error::before { border-color: var(--red); background: var(--red); }

.step-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .3rem;
  flex-wrap: wrap;
}
.step-number {
  font-size: .7rem;
  font-weight: 700;
  color: var(--text-dim);
  min-width: 1.5rem;
}
.step-title {
  font-weight: 600;
  font-size: .95rem;
}
.step-type-badge {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: .1rem .4rem;
  border-radius: 4px;
  letter-spacing: .04em;
}
.step-type-badge.text { background: rgba(136,136,160,.15); color: var(--text-dim); }
.step-type-badge.media_generation { background: rgba(59,130,246,.15); color: var(--blue); }
.step-type-badge.feedback { background: rgba(255,193,7,.15); color: var(--yellow); }
.step-type-badge.review { background: rgba(108,92,231,.18); color: var(--accent); }
.step-type-badge.learning { background: rgba(46,213,115,.15); color: var(--green); }
.step-type-badge.error { background: rgba(230,57,70,.15); color: var(--red); }

.step-desc {
  color: var(--text-dim);
  font-size: .85rem;
  line-height: 1.5;
  margin-top: .25rem;
  white-space: pre-wrap;
}

.step-time {
  font-size: .72rem;
  color: rgba(136,136,160,.6);
  margin-top: .3rem;
}

/* Media grid */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: .6rem;
  margin-top: .75rem;
}

.media-card {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color .15s, transform .15s;
  aspect-ratio: 4/5;
  background: var(--bg-input);
}
.media-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.media-card.is-best { border-color: var(--green); }

.media-card img, .media-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: .4rem .5rem;
  background: linear-gradient(transparent, rgba(0,0,0,.85));
  display: flex;
  align-items: center;
  gap: .35rem;
}

.media-card .download-btn {
  position: absolute;
  top: .35rem; right: .35rem;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(0,0,0,.65);
  border: none;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  opacity: 0;
  transition: opacity .15s;
}
.media-card:hover .download-btn { opacity: 1; }

/* ─── Lightbox ─────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.lightbox.hidden { display: none; }

.lb-close {
  position: absolute;
  top: 1rem; right: 1.25rem;
  background: none; border: none;
  color: var(--text);
  font-size: 2.2rem;
  cursor: pointer;
  z-index: 10;
  line-height: 1;
  opacity: .7;
  transition: opacity .15s;
}
.lb-close:hover { opacity: 1; }

.lb-prev, .lb-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,.08);
  border: none;
  color: var(--text);
  font-size: 2.5rem;
  width: 50px; height: 70px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  z-index: 10;
  opacity: .5;
  transition: opacity .15s, background .15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-prev { left: 1rem; }
.lb-next { right: 1rem; }
.lb-prev:hover, .lb-next:hover { opacity: 1; background: rgba(255,255,255,.14); }

.lb-content {
  max-width: 90vw;
  max-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-img {
  max-width: 90vw;
  max-height: 78vh;
  object-fit: contain;
  border-radius: var(--radius);
}
.lb-video {
  max-width: 90vw;
  max-height: 78vh;
  border-radius: var(--radius);
}

.lb-info {
  margin-top: 1rem;
  text-align: center;
  max-width: 600px;
  padding: 0 1rem;
}
.lb-counter {
  font-size: .8rem;
  color: var(--text-dim);
  margin-right: .5rem;
}
.lb-badge {
  font-size: .72rem;
}
.lb-prompt {
  font-size: .8rem;
  color: var(--text-dim);
  margin-top: .5rem;
  line-height: 1.4;
  max-height: 4.2em;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Responsive ───────────────────────────────────────── */
@media (max-width: 600px) {
  #app { padding: 1.25rem 1rem 3rem; }
  .page-title { font-size: 1.3rem; }
  .project-header h1 { font-size: 1.25rem; }
  .media-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: .5rem;
  }
  .lb-prev, .lb-next { width: 36px; height: 50px; font-size: 1.8rem; }
  .lb-prev { left: .5rem; }
  .lb-next { right: .5rem; }
}

@media (min-width: 700px) {
  .media-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
}