*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #faf8f5;
  --color-text: #1a1410;
  --color-text-muted: #5c534a;
  --color-accent: #a06830;
  --color-accent-light: #f0e0d0;
  --color-david: #2c4a5e;
  --color-halley: #8e4a53;
  --color-divider: #e0d8d0;
  --color-placeholder: #e8e0d8;
  --font-serif: Georgia, 'Times New Roman', Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --max-width: 820px;
  --section-padding: clamp(4rem, 10vh, 8rem);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.1vw + 0.6rem, 1.25rem);
  line-height: 1.7;
}

/* --- Reveal Animations --- */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  min-height: 1px;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* --- Hero --- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.hero-inner {
  max-width: 700px;
}

.hero-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(3rem, 6vw + 1rem, 6rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 3rem;
}

.scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  animation: float 2.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* --- Chapters --- */

.chapter {
  padding: var(--section-padding) 2rem;
  border-top: 1px solid var(--color-divider);
}

.chapter-header {
  max-width: var(--max-width);
  margin: 0 auto 3rem;
  text-align: center;
}

.chapter-number {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.chapter-title {
  font-size: clamp(2rem, 4vw + 0.5rem, 3.5rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.chapter-date {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.chapter-body {
  max-width: var(--max-width);
  margin: 0 auto;
}

.chapter-highlight {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-accent-light) 40%, var(--color-accent-light) 60%, var(--color-bg) 100%);
}

.chapter-finale .chapter-title {
  font-size: clamp(2.5rem, 5vw + 0.5rem, 4.5rem);
}

/* --- Photo Placeholders --- */

.photo-placeholder {
  aspect-ratio: 4/3;
  background: var(--color-placeholder);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2.5rem;
  overflow: hidden;
}

.photo-placeholder span {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.photo-placeholder-wide {
  aspect-ratio: 16/9;
}

.photo-placeholder-hero {
  aspect-ratio: 3/2;
  min-height: 300px;
}

.photo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.photo-grid .photo-placeholder {
  margin-bottom: 0;
  aspect-ratio: 1;
}

/* --- Voice Blocks --- */

.voice {
  margin-bottom: 2.5rem;
  padding-left: 1.5rem;
  border-left: 3px solid var(--color-divider);
}

.voice-david {
  border-left-color: var(--color-david);
}

.voice-halley {
  border-left-color: var(--color-halley);
}

.voice-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.voice-david .voice-label {
  color: var(--color-david);
}

.voice-halley .voice-label {
  color: var(--color-halley);
}

.voice p + p {
  margin-top: 1rem;
}

.reveal-highlight.visible {
  font-style: italic;
  color: var(--color-accent);
  font-size: 1.15em;
  line-height: 1.6;
}

/* --- Dual Voice (side by side) --- */

.dual-voice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

/* --- Footer --- */

.site-footer {
  padding: var(--section-padding) 2rem;
  text-align: center;
  border-top: 1px solid var(--color-divider);
}

.site-footer p {
  font-size: clamp(1.2rem, 2vw + 0.5rem, 1.6rem);
  font-style: italic;
  color: var(--color-text-muted);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* --- Responsive --- */

@media (max-width: 700px) {
  .dual-voice {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .photo-grid {
    grid-template-columns: 1fr;
  }

  .chapter {
    padding: clamp(3rem, 8vh, 5rem) 1.25rem;
  }

  .hero {
    padding: 1.25rem;
  }

  .voice {
    padding-left: 1rem;
  }
}