/* YouTube Playlist Length Styles */
:root {
  --ytp-primary: #0f172a;
  --ytp-primary-foreground: #f8fafc;
  --ytp-background: #ffffff;
  --ytp-foreground: #020817;
  --ytp-muted: #f1f5f9;
  --ytp-muted-foreground: #64748b;
  --ytp-card: #ffffff;
  --ytp-card-foreground: #020817;
  --ytp-border: #e2e8f0;
  --ytp-input: #e2e8f0;
  --ytp-destructive: #ef4444;
  --ytp-destructive-foreground: #f8fafc;
  --ytp-ring: #94a3b8;
  --ytp-radius: 0.5rem;
}

#ytp-container {
  font-family: ui-sans-serif, system-ui, sans-serif;
  color: var(--ytp-foreground);
  max-width: 56rem; /* max-w-4xl */
  margin: 0 auto;
  padding: 2rem 1rem;
}

#ytp-container h1 {
  font-size: 2.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

#ytp-container p.subtitle {
  text-align: center;
  color: var(--ytp-muted-foreground);
  font-size: 0.875rem;
  margin-bottom: 2rem;
  line-height: 1.625;
}

.ytp-card {
  background: var(--ytp-card);
  color: var(--ytp-card-foreground);
  border: 1px solid var(--ytp-border);
  border-radius: calc(var(--ytp-radius) + 0.25rem);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  margin-bottom: 2rem;
}

.ytp-card-header {
  padding: 1.5rem;
}

.ytp-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.ytp-card-description {
  font-size: 0.875rem;
  color: var(--ytp-muted-foreground);
}

.ytp-card-content {
  padding: 1.5rem;
  padding-top: 0;
}

.ytp-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.ytp-input {
  display: flex;
  height: 2.5rem;
  width: 100%;
  border-radius: calc(var(--ytp-radius) - 2px);
  border: 1px solid var(--ytp-input);
  background: transparent;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.ytp-input:focus {
  outline: none;
  border-color: var(--ytp-ring);
  box-shadow: 0 0 0 2px rgba(148, 163, 184, 0.2);
}

.ytp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: calc(var(--ytp-radius) - 2px);
  font-size: 0.875rem;
  font-weight: 500;
  height: 2.5rem;
  padding: 0 1rem;
  cursor: pointer;
  transition: all 0.15s;
}

.ytp-btn-primary {
  background: var(--ytp-primary);
  color: var(--ytp-primary-foreground);
  border: 1px solid transparent;
}
.ytp-btn-primary:hover {
  background: #1e293b;
}
.ytp-btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ytp-btn-outline {
  background: transparent;
  border: 1px solid var(--ytp-input);
  color: var(--ytp-foreground);
}
.ytp-btn-outline:hover {
  background: var(--ytp-muted);
}

.ytp-error-text {
  color: var(--ytp-destructive);
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: none;
}

.ytp-alert-error {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--ytp-destructive);
  padding: 0.75rem 1rem;
  border-radius: var(--ytp-radius);
  font-size: 0.875rem;
  margin-top: 1rem;
  display: none;
}

/* Grids & Layouts */
.ytp-flex-row { display: flex; gap: 1rem; }
.ytp-flex-col { display: flex; flex-direction: column; gap: 1rem; }
.ytp-w-full { width: 100%; }
.ytp-flex-1 { flex: 1; }
.ytp-items-center { align-items: center; }
.ytp-justify-between { justify-content: space-between; }
.ytp-justify-end { justify-content: flex-end; }
.ytp-flex-wrap { flex-wrap: wrap; }
.ytp-gap-2 { gap: 0.5rem; }
.ytp-gap-4 { gap: 1rem; }
.ytp-mt-2 { margin-top: 0.5rem; }
.ytp-mt-4 { margin-top: 1rem; }
.ytp-pt-4 { padding-top: 1rem; }

.ytp-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  border-radius: 0.375rem;
  font-size: 0.6875rem;
  font-weight: 600;
  border: 1px solid var(--ytp-border);
  cursor: pointer;
  transition: 0.2s;
}
.ytp-pill-amber { background: rgba(254, 243, 199, 0.8); color: #b45309; border-color: #fde68a; }
.ytp-pill-amber:hover { background: #fef3c7; color: #92400e; }

.ytp-pill-rose { background: rgba(255, 228, 230, 0.8); color: #be123c; border-color: #fecdd3; }
.ytp-pill-rose:hover { background: #ffe4e6; color: #9f1239; }

.ytp-pill-blue { background: rgba(239, 246, 255, 0.8); color: #1d4ed8; border-color: #bfdbfe; }
.ytp-pill-blue:hover { background: #eff6ff; color: #1e40af; }

.ytp-spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: ytp-spin 1s ease-in-out infinite;
  margin-right: 0.5rem;
}
@keyframes ytp-spin { to { transform: rotate(360deg); } }

.ytp-results { margin-top: 2rem; display: none; }
.ytp-results.visible { display: block; }

.ytp-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.ytp-stat-card {
  background: var(--ytp-muted);
  padding: 1.25rem;
  border-radius: var(--ytp-radius);
  text-align: center;
  border: 1px solid var(--ytp-border);
}
.ytp-stat-value { font-size: 1.5rem; font-weight: 700; color: var(--ytp-primary); }
.ytp-stat-label { font-size: 0.875rem; color: var(--ytp-muted-foreground); margin-top: 0.25rem; }

.ytp-video-list { margin-top: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.ytp-video-card {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--ytp-border);
  border-radius: var(--ytp-radius);
  background: var(--ytp-card);
  transition: border-color 0.2s;
}
.ytp-video-card:hover { border-color: var(--ytp-ring); }
.ytp-video-thumb {
  width: 140px;
  height: 78px;
  border-radius: 0.25rem;
  object-fit: cover;
  background: var(--ytp-muted);
}
.ytp-video-info { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.ytp-video-title { font-weight: 600; font-size: 0.95rem; margin: 0 0 0.35rem; color: var(--ytp-foreground); text-decoration: none; }
.ytp-video-title:hover { text-decoration: underline; }
.ytp-video-meta { font-size: 0.8rem; color: var(--ytp-muted-foreground); display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.ytp-video-meta-badge { background: var(--ytp-muted); padding: 0.15rem 0.4rem; border-radius: 0.25rem; font-weight: 500; }

/* Tips Toggle */
.ytp-tips-btn {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--ytp-radius);
  border: 1px solid var(--ytp-border);
  background: rgba(241, 245, 249, 0.5);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}
.ytp-tips-content {
  display: none;
  padding: 1rem;
  background: rgba(241, 245, 249, 0.3);
  border: 1px solid var(--ytp-border);
  border-top: none;
  border-bottom-left-radius: var(--ytp-radius);
  border-bottom-right-radius: var(--ytp-radius);
  font-size: 0.875rem;
  color: var(--ytp-muted-foreground);
}
.ytp-tips-content.open { display: block; }
.ytp-tips-content ul { padding-left: 1rem; margin: 0; }
.ytp-tips-content li { margin-bottom: 0.5rem; }

/* Typography */
.ytp-h2 { font-size: 1.5rem; font-weight: 600; margin-top: 2.5rem; margin-bottom: 1rem; }
.ytp-h3 { font-size: 1.25rem; font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.75rem; }
.ytp-p { font-size: 1rem; color: var(--ytp-muted-foreground); line-height: 1.6; margin-bottom: 1rem; }
.ytp-list { margin-bottom: 1rem; padding-left: 1.5rem; color: var(--ytp-muted-foreground); }
.ytp-list li { margin-bottom: 0.5rem; }