/*
 * SoundStory Design System
 * Warm, playful palette with dark mode support
 */

:root {
  /* Warm, playful palette -- oranges, yellows, soft reds */
  --color-primary: #e97b2d;
  --color-primary-hover: #d46a1e;
  --color-primary-light: #fef3e2;
  --color-secondary: #f5a623;
  --color-accent: #e05d5d;

  --color-bg: #fffbf5;
  --color-bg-card: #ffffff;
  --color-bg-nav: #ffffff;
  --color-border: #f0e6d9;
  --color-border-card: #f5ebe0;

  --color-text: #2d2319;
  --color-text-secondary: #7a6b5d;
  --color-text-muted: #a89a8c;

  --color-success: #4caf7d;
  --color-error: #e05d5d;

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(45, 35, 25, 0.06);
  --shadow-md: 0 4px 12px rgba(45, 35, 25, 0.08);
  --shadow-lg: 0 8px 24px rgba(45, 35, 25, 0.12);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #f0943e;
    --color-primary-hover: #e97b2d;
    --color-primary-light: #3d2a1a;
    --color-secondary: #f5a623;
    --color-accent: #f07070;

    --color-bg: #1a1612;
    --color-bg-card: #262018;
    --color-bg-nav: #211c15;
    --color-border: #3d3428;
    --color-border-card: #3d3428;

    --color-text: #f5ebe0;
    --color-text-secondary: #bfad9a;
    --color-text-muted: #8a7a6a;

    --color-success: #5bc98d;
    --color-error: #f07070;
  }
}

/* Base styles */
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Button base styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}
.btn-primary:hover { background-color: var(--color-primary-hover); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
}

.btn-secondary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background-color: var(--color-primary); color: white; }

.btn-ghost {
  background: none;
  color: var(--color-text-secondary);
}
.btn-ghost:hover { color: var(--color-primary); background-color: var(--color-primary-light); }

.btn-danger {
  background-color: var(--color-error);
  color: white;
}
.btn-danger:hover { opacity: 0.9; transform: translateY(-1px); }

/* Card component */
.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-interactive:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* Form inputs */
.input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-card);
  color: var(--color-text);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(233, 123, 45, 0.15);
}

.input-lg {
  padding: 0.75rem 1rem;
  font-size: 1.125rem;
}

/* Label */
.label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.label-hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-primary { background-color: var(--color-primary-light); color: var(--color-primary); }
.badge-success { background-color: rgba(76, 175, 125, 0.15); color: var(--color-success); }
.badge-accent { background-color: rgba(224, 93, 93, 0.12); color: var(--color-accent); }

/* Alert / Notice */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.alert-success {
  background-color: rgba(76, 175, 125, 0.12);
  color: var(--color-success);
  border: 1px solid rgba(76, 175, 125, 0.25);
}
.alert-error {
  background-color: rgba(224, 93, 93, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(224, 93, 93, 0.2);
}

/* Subtle loading animation */
@keyframes pulse-gentle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.loading-pulse { animation: pulse-gentle 2s ease-in-out infinite; }

/* Bounce dots for loading */
@keyframes bounce-dot {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* Fade-in animation for page content */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fade-in 0.3s ease-out; }

/* Story reading view -- generous spacing */
.story-reading-view .distar-text,
.story-reading-view .distar-glyph,
.story-reading-view .story-text {
  font-size: 1.375rem;
  line-height: 2.2;
  letter-spacing: 0.01em;
}

@media (min-width: 768px) {
  .story-reading-view .distar-text,
  .story-reading-view .distar-glyph,
  .story-reading-view .story-text {
    font-size: 1.5rem;
    line-height: 2.4;
  }
}

/* Nav styles */
.nav-main {
  background-color: var(--color-bg-nav);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-normal);
}

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}
.nav-brand:hover { opacity: 0.85; }

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Mobile bottom tab bar (visible only on mobile) */
.mobile-tab-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-bg-nav);
  border-top: 1px solid var(--color-border);
  padding: 0.5rem 0;
  padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
  z-index: 50;
}

.mobile-tab-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.125rem;
  flex: 1;
  padding: 0.375rem;
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.mobile-tab-bar a:hover,
.mobile-tab-bar a.active {
  color: var(--color-primary);
}
.mobile-tab-bar .tab-icon {
  font-size: 1.375rem;
  line-height: 1;
}

@media (max-width: 767px) {
  .mobile-tab-bar {
    display: flex;
  }
  body {
    padding-bottom: 4.5rem;
  }
}

/* Page container */
.page-container {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

.page-container-narrow {
  max-width: 32rem;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

.page-container-wide {
  max-width: 56rem;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

/* Pill / chip for suggestion buttons */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-card);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: capitalize;
}
.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}
.chip-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Section heading */
.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1rem;
}

/* Utility: warm divider */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 1.5rem 0;
}

/* Welcome slides */
.slides-container {
  position: relative;
  overflow: hidden;
}
.slide {
  display: none;
  text-align: center;
  padding: 2rem 1rem;
}
.slide.active { display: block; }

.slide-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.slide-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--color-border);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
  border: none;
  padding: 0;
}
.slide-dot.active {
  background-color: var(--color-primary);
  transform: scale(1.3);
}

/* Status dot indicators */
.status-dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
}
.status-dot-success { background-color: var(--color-success); }
.status-dot-warning { background-color: var(--color-secondary); }
.status-dot-error { background-color: var(--color-error); }

/* Avatar circle */
.avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-border-card);
}
.avatar-lg { width: 4rem; height: 4rem; font-size: 2.25rem; }
.avatar-md { width: 3rem; height: 3rem; font-size: 1.75rem; }

/* Grid helpers */
@media (min-width: 640px) {
  .grid-2-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
}

/* Interest tag toggle */
.interest-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-card);
  color: var(--color-text-secondary);
}
.interest-tag.selected {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}