/* ============================================================
   Time Zone Buddy — Website Styles
   Single source of truth: docs/website_AI_instructions.md
   ============================================================ */

/* ── Custom Properties ────────────────────────────────────── */

:root {
  /* Light mode */
  --color-bg:             #F0F7FD;
  --color-surface:        #FFFFFF;
  --color-surface-raised: #E8F4FD;
  --color-border:         #C8DFF0;
  --color-text-primary:   #0D1B3E;
  --color-text-secondary: #3A5A7A;
  --color-text-muted:     #7A9AB8;
  --color-brand:          #2E88D4;
  --color-brand-hover:    #1A6CB8;
  --color-accent:         #2ECAD4;
  --color-premium:        #9B6DFF;
  --color-amber:          #F5A623;

  /* Gradients */
  --gradient-hero:     135deg, #0A1E40, #0D2A50, #0A3060, #06081A;
  --gradient-plus:     135deg, #2E88D4, #2ECAD4;
  --gradient-lifetime: 135deg, #F5A623, #E8703A;
  --gradient-aurora:   135deg, #1A3A6E, #2E88D4, #2ECAD4, #0D1A3A;
}

.dark {
  --color-bg:             #06081A;
  --color-surface:        #0D1428;
  --color-surface-raised: #152035;
  --color-border:         #1E3050;
  --color-text-primary:   #E8F4FD;
  --color-text-secondary: #A8C8E8;
  --color-text-muted:     #5A7A9A;
  --color-brand:          #2E88D4;
  --color-brand-hover:    #4AA8F4;
  --color-accent:         #2ECAD4;
  --color-premium:        #9B6DFF;
  --color-amber:          #F5A623;
}

/* ── Base ─────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ── Device Frame ─────────────────────────────────────────── */

.device-frame {
  position: relative;
  width: var(--frame-width, 260px);
  aspect-ratio: 1470 / 3000;
  flex-shrink: 0;
  filter: drop-shadow(0 25px 50px rgb(0 0 0 / 0.32));
}

.device-frame-sm { --frame-width: 200px; }

.device-screen-clip {
  position: absolute;
  top: 2.233%;
  left: 5.102%;
  width: 89.796%;
  height: 95.533%;
  overflow: hidden;
  border-radius: 13% / 6%;
}

.device-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.device-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ── Carousel ─────────────────────────────────────────────── */

.carousel-wrapper { overflow: hidden; }

.carousel-stack {
  display: grid;
  justify-items: center;
  padding: 1rem 0 1.5rem;
}

.carousel-slide {
  grid-column: 1;
  grid-row: 1;
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
}

.carousel-slide.active {
  opacity: 1;
  pointer-events: auto;
}

/* ── Coming Soon Buttons ──────────────────────────────────── */

.btn-coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border-radius: 14px;
  border: 1.5px solid var(--color-border);
  cursor: default;
  user-select: none;
}

.btn-coming-soon-light {
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

/* ── Focus Visible (Accessibility) ───────────────────────── */

:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Utility: Hero Gradient Background ────────────────────── */

.bg-hero {
  background: linear-gradient(var(--gradient-hero));
}

.bg-aurora {
  background: linear-gradient(var(--gradient-aurora));
}