/* ============================================
   SAPPHO ROAD — Stylesheet
   A design inspired by Pompeian frescoes,
   classical typography, and modern elegance.
   ============================================ */

:root {
  /* Color Palette — Inspired by the Sappho fresco */
  --color-bg: #FAF7F2;
  --color-bg-deep: #1C1419;
  --color-wine: #6B2D3E;
  --color-wine-light: #8B3D4E;
  --color-gold: #C5A55A;
  --color-gold-muted: #B89A50;
  --color-cream: #F5EDE0;
  --color-warm-gray: #9A9189;
  --color-text: #2A2226;
  --color-text-light: #6B6460;
  --color-text-inv: #F5EDE0;
  --color-sage: #5A7A6A;
  --color-border: #E0D8CE;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-med: 0.5s var(--ease-out-expo);
  --transition-slow: 0.8s var(--ease-out-expo);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

/* ---- Reveal Animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

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

.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) var(--space-md);
  transition: background var(--transition-med), padding var(--transition-med), backdrop-filter var(--transition-med);
}

.nav.scrolled {
  background: rgba(250, 247, 242, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.6rem var(--space-md);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text-inv);
  transition: color var(--transition-fast);
}

.nav.scrolled .nav-logo {
  color: var(--color-text);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-inv);
  opacity: 0.8;
  transition: opacity var(--transition-fast), color var(--transition-fast);
  position: relative;
}

.nav.scrolled .nav-links a {
  color: var(--color-text);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width var(--transition-med);
}

.nav-links a:hover {
  opacity: 1;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-inv);
  transition: background var(--transition-fast);
}

.nav.scrolled .nav-toggle span {
  background: var(--color-text);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-deep);
}

.hero-image-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image {
  width: 55%;
  max-width: 600px;
  min-width: 280px;
  height: auto;
  border-radius: 50%;
  object-fit: cover;
  opacity: 0.35;
  filter: saturate(0.7) brightness(0.75);
  transition: opacity 1.5s var(--ease-out-expo);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 20%, rgba(28, 20, 25, 0.6) 70%),
    linear-gradient(180deg, rgba(28, 20, 25, 0.2) 0%, rgba(28, 20, 25, 0.8) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-md);
}

.hero-badge {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--color-cream);
  line-height: 0.95;
  margin-bottom: var(--space-md);
}

.hero-title-line {
  display: block;
  font-size: clamp(4rem, 12vw, 10rem);
}

.hero-rule {
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 0 auto var(--space-md);
}

.hero-subtitle {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-cream);
  opacity: 0.9;
  margin-bottom: var(--space-sm);
}

.hero-description {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-warm-gray);
  margin-bottom: var(--space-xl);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  z-index: 2;
}

.hero-scroll-indicator span {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-warm-gray);
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ---- Section Labels ---- */
.section-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold-muted);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.section-title.centered,
.section-intro.centered {
  text-align: center;
}

.section-intro {
  font-size: 1.15rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin-bottom: var(--space-xl);
}

.section-intro.centered {
  margin-left: auto;
  margin-right: auto;
}

/* ---- About ---- */
.about {
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-image-frame {
  position: relative;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow:
    0 20px 60px rgba(28, 20, 25, 0.08),
    0 4px 20px rgba(28, 20, 25, 0.04);
}

.about-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out-expo);
}

.about-image-frame:hover .about-image {
  transform: scale(1.05);
}

.about-lead {
  font-size: 1.4rem;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.about-body {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.about-stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-wine);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-warm-gray);
  margin-top: var(--space-xs);
}

/* ---- Topics Marquee ---- */
.topics-band {
  background: var(--color-bg-deep);
  padding: var(--space-md) 0;
  overflow: hidden;
}

.topics-marquee {
  position: relative;
}

.topics-track {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  white-space: nowrap;
  animation: marquee 40s linear infinite;
  width: max-content;
}

.topics-track span {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-cream);
  opacity: 0.7;
  letter-spacing: 0.03em;
}

.topics-dot {
  width: 4px !important;
  height: 4px;
  border-radius: 50%;
  background: var(--color-gold);
  opacity: 0.5 !important;
  flex-shrink: 0;
  font-size: 0 !important;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---- Sessions ---- */
.sessions {
  background: var(--color-cream);
}

.year-group {
  margin-bottom: var(--space-xl);
}

.year-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.year-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--color-wine);
  line-height: 1;
  flex-shrink: 0;
}

.year-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--color-wine), transparent);
  opacity: 0.3;
}

.year-subtitle {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-warm-gray);
  flex-shrink: 0;
}

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-md);
}

/* ---- Session Card ---- */
.session-card {
  position: relative;
  background: var(--color-bg);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
}

.session-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(28, 20, 25, 0.08);
}

.session-card-accent {
  height: 3px;
  background: linear-gradient(to right, var(--color-wine), var(--color-gold));
}

.session-card-content {
  padding: var(--space-md);
}

.session-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold-muted);
  background: rgba(197, 165, 90, 0.1);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: var(--space-sm);
}

.session-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.session-speaker {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-wine);
  margin-bottom: var(--space-sm);
}

.session-excerpt {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-light);
}

.session-toggle {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-wine);
  margin-top: var(--space-sm);
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast);
}

.session-toggle::after {
  content: ' +';
}

.session-toggle[aria-expanded="true"]::after {
  content: ' \2212';
}

.session-toggle:hover {
  color: var(--color-gold-muted);
}

.session-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease-out-expo), margin 0.3s var(--ease-out);
}

.session-details.open {
  max-height: 3000px;
  margin-top: var(--space-sm);
}

.session-details ul {
  padding-left: 1.4rem;
  margin-bottom: var(--space-sm);
}

.session-details li {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-light);
  margin-bottom: 0.4rem;
}

.session-details p {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.session-bio {
  font-size: 0.88rem !important;
  opacity: 0.85;
}

.session-details a {
  color: var(--color-wine);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.session-details a:hover {
  color: var(--color-gold);
}

/* ---- Quote Section ---- */
.quote-section {
  background: var(--color-bg-deep);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.quote-rotator {
  display: grid;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.pull-quote {
  grid-area: 1 / 1;
  max-width: 800px;
  margin: 0 auto;
  opacity: 0;
  transition: opacity 1s ease;
  pointer-events: none;
}

.pull-quote.active {
  opacity: 1;
  pointer-events: auto;
}

/* Quote Navigation Arrows */
.quote-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--color-gold);
  opacity: 0.5;
  border: 1px solid rgba(197, 165, 90, 0.25);
  border-radius: 50%;
  background: rgba(197, 165, 90, 0.05);
  transition: opacity 0.3s ease, background 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
  line-height: 1;
}

.quote-arrow:hover {
  opacity: 1;
  background: rgba(197, 165, 90, 0.12);
  border-color: rgba(197, 165, 90, 0.5);
}

.quote-arrow-prev {
  left: -60px;
}

.quote-arrow-next {
  right: -60px;
}

/* Quote Dots */
.quote-dots {
  grid-area: 2 / 1;
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-md);
}

.quote-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-warm-gray);
  opacity: 0.3;
  transition: opacity 0.3s ease, background 0.3s ease;
  cursor: pointer;
  border: none;
  padding: 0;
}

.quote-dot.active {
  opacity: 1;
  background: var(--color-gold);
}

.pull-quote p {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.6;
  color: var(--color-cream);
}

.pull-quote cite {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-top: var(--space-md);
}

/* ---- Contact ---- */
.contact {
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.contact-body {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-wine);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast), gap var(--transition-fast);
}

.contact-link:hover {
  border-color: var(--color-wine);
  gap: var(--space-sm);
}

.contact-card {
  aspect-ratio: 3/4;
  max-width: 320px;
  margin: 0 auto;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-wine), var(--color-bg-deep));
  padding: 2px;
  box-shadow: 0 30px 60px rgba(28, 20, 25, 0.15);
}

.contact-card-inner {
  width: 100%;
  height: 100%;
  border-radius: 11px;
  background: linear-gradient(160deg, var(--color-bg-deep) 0%, var(--color-wine) 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-lg);
  gap: var(--space-md);
}

.contact-card-label {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.contact-card-tagline {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-cream);
}

.contact-card-est {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-warm-gray);
}

/* ---- Footer ---- */
.footer {
  background: var(--color-bg);
  padding: var(--space-xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.footer-text {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-warm-gray);
}

.footer-rule {
  width: 40px;
  height: 1px;
  background: var(--color-gold);
  margin: var(--space-md) auto;
}

.footer-credit {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--color-text-light);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .about-image-frame {
    max-width: 250px;
    margin: 0 auto;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .contact-visual {
    order: -1;
  }

  .contact-card {
    max-width: 260px;
  }

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

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(250, 247, 242, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-md);
    gap: var(--space-sm);
  }

  .nav-links.open a {
    color: var(--color-text);
    opacity: 1;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-logo {
    font-size: 1.1rem;
  }

  .hero-image {
    width: 80%;
    min-width: 220px;
  }

  .hero-title-line {
    font-size: clamp(2.8rem, 14vw, 5rem);
  }

  .hero-subtitle {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
  }

  .hero-description {
    font-size: 0.6rem;
    letter-spacing: 0.1em;
  }

  .hero-badge {
    font-size: 0.6rem;
  }

  .about-stats {
    gap: var(--space-md);
  }

  .stat-number {
    font-size: 2rem;
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .year-title {
    font-size: 2.5rem;
  }

  .pull-quote p {
    font-size: 1.1rem;
  }

  .quote-arrow-prev {
    left: -8px;
  }

  .quote-arrow-next {
    right: -8px;
  }

  .quote-arrow {
    width: 32px;
    height: 32px;
    font-size: 1.4rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .about-lead {
    font-size: 1.15rem;
  }
}

/* ---- Selection ---- */
::selection {
  background: var(--color-wine);
  color: var(--color-cream);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-warm-gray);
}