/* Base styles */
:root {
  --color-primary: #1f4f7a;
  --color-primary-dark: #0f304d;
  --color-accent: #64b6e9;
  --color-bg: #f3f6fb;
  --color-surface: #ffffff;
  --color-ink: #152234;
  --color-muted: #5c6675;
  --color-border: #d6e0ec;
  --shadow-soft: 0 15px 35px rgba(21, 34, 52, 0.08);
  --radius: 14px;
  --max-width: 1100px;
}

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

body {
  font-family: "Manrope", "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  color: var(--color-ink);
  background: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 18%, rgba(100, 182, 233, 0.14), transparent 32%),
    radial-gradient(circle at 90% 4%, rgba(31, 79, 122, 0.12), transparent 32%),
    linear-gradient(180deg, #f7f9fd 0%, #eff3f9 100%);
  min-height: 100vh;
}

h1,
h2,
h3,
h4 {
  font-family: "Playfair Display", "Georgia", serif;
  line-height: 1.2;
  color: var(--color-primary-dark);
}

h1 {
  font-size: clamp(2.2rem, 4vw, 2.9rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.2rem);
}

h3 {
  font-size: 1.35rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-primary-dark);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.75rem;
}

.container.narrow {
  max-width: 960px;
}

section {
  padding: 3.75rem 0;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--color-muted);
  font-weight: 700;
}

.lede {
  max-width: 640px;
  color: var(--color-muted);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(248, 246, 242, 0.95);
  border-bottom: 1px solid rgba(220, 215, 205, 0.8);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-mark {
  width: 52px;
  height: 52px;
  padding: 4px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary), #2d77b3);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  box-shadow: 0 8px 20px rgba(15, 48, 77, 0.22);
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.site-name {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 1.05rem;
}

.site-sub {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.35rem;
  align-items: center;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  font-weight: 600;
  transition: all 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  background: rgba(31, 79, 122, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  padding: 0.55rem 0.65rem;
  background-color: #fff;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary-dark);
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  padding: 0.75rem 1.35rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 12px 25px rgba(15, 48, 77, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(15, 48, 77, 0.26);
  color: white;
}

.btn.ghost {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: inset 0 0 0 1px var(--color-border), 0 8px 20px rgba(15, 48, 77, 0.1);
}

.btn.secondary {
  background: linear-gradient(135deg, var(--color-accent), #4fa2d5);
  color: var(--color-primary-dark);
  box-shadow: 0 12px 25px rgba(79, 162, 213, 0.3);
}

.btn.subtle {
  background: rgba(31, 79, 122, 0.08);
  color: var(--color-primary-dark);
  box-shadow: none;
}

/* Hero */
.hero {
  position: relative;
  padding: 4rem 0;
  min-height: 45vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #f7fbff;
  background-image:
    linear-gradient(135deg, rgba(15, 48, 77, 0.82), rgba(17, 72, 114, 0.72)),
    url('/images/banner.jpg');
  background-size: cover;
  background-position: center 25%;
}

@media (max-width: 768px) {
  .hero {
    background-position: center center;
    min-height: 40vh;
  }
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero::before {
  background: radial-gradient(120% 120% at 20% 20%, rgba(100, 182, 233, 0.15), transparent 45%),
    radial-gradient(80% 90% at 90% 0%, rgba(21, 79, 122, 0.18), transparent 42%);
}

.hero::after {
  background: linear-gradient(180deg, rgba(247, 251, 255, 0) 0%, rgba(247, 251, 255, 0.88) 90%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.4rem;
  align-items: center;
}

.hero-copy {
  z-index: 1;
}

.hero .eyebrow {
  color: rgba(247, 251, 255, 0.75);
}

.hero h1 {
  margin: 0.35rem 0 0.75rem;
  color: #f7fbff;
}

.hero .tagline {
  font-size: 1.05rem;
  color: rgba(247, 251, 255, 0.88);
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1.35rem 0 1.1rem;
}





/* Section heading */
.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
}

/* Next event */
.next-event {
  position: relative;
}

.event-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  background: #fff;
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(220, 215, 205, 0.9);
}

.event-date {
  display: grid;
  place-items: center;
  min-width: 110px;
  background: radial-gradient(circle at 30% 30%, rgba(100, 182, 233, 0.18), transparent 65%),
    linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: 14px;
  padding: 1rem 1.2rem;
  text-align: center;
  box-shadow: 0 12px 24px rgba(15, 48, 77, 0.25);
}

.event-date .month {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.event-date .day {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.event-date .year {
  font-size: 0.9rem;
}

.event-details {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.event-time,
.event-location {
  color: var(--color-muted);
  font-weight: 600;
}

.event-theme {
  margin-top: 0.35rem;
  color: #1f6fa5;
  font-weight: 600;
}

.speakers {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.5rem;
}

.speaker {
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--color-border);
}

.speaker:last-child {
  border-bottom: none;
}

.speaker h3 {
  color: var(--color-primary-dark);
  margin-bottom: 0.15rem;
  font-size: 1.05rem;
}

.talk-title {
  font-style: italic;
  color: var(--color-muted);
}

.event-note {
  margin-top: 0.25rem;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.no-event {
  text-align: center;
  color: var(--color-muted);
  font-style: italic;
  padding: 2rem;
}



/* CTA tiles */
.cta {
  padding: 3rem 0 3.5rem;
}

.cta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.cta-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(220, 215, 205, 0.8);
  display: grid;
  gap: 0.6rem;
}

.cta-card h3 {
  margin: 0;
}

.cta-card p {
  color: var(--color-muted);
  margin: 0;
}

/* Page content */
.page {
  padding: 3.4rem 0;
}

.page h1 {
  margin-bottom: 1.1rem;
}

.page h2 {
  margin: 2rem 0 0.8rem;
}

.page p {
  margin-bottom: 1rem;
}

.page ul,
.page ol {
  margin-bottom: 1rem;
  padding-left: 1.3rem;
}

.page li {
  margin-bottom: 0.5rem;
}

/* Talk history */
.talks-year {
  margin-bottom: 2.3rem;
  background: #fff;
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  border: 1px solid rgba(220, 215, 205, 0.8);
  box-shadow: var(--shadow-soft);
}

.talks-year h2 {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
}

.talk-entry {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--color-border);
}

.talk-entry:last-child {
  border-bottom: none;
}

.talk-date {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 0.2rem;
}

.talk-speaker {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.talk-topic {
  font-style: italic;
  color: var(--color-muted);
}

.field-trip {
  background: linear-gradient(135deg, rgba(100, 182, 233, 0.16), rgba(255, 255, 255, 0.95));
  padding: 0.8rem 1rem;
  border-radius: var(--radius);
  margin: 0.5rem 0;
  border: 1px dashed var(--color-border);
}

/* Committee */
.committee-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.1rem;
  margin: 1.5rem 0 2.5rem;
}

.committee-member {
  background: #fff;
  padding: 1.3rem;
  border-radius: var(--radius);
  border: 1px solid rgba(220, 215, 205, 0.8);
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.committee-member h3 {
  margin-bottom: 0.15rem;
}

.committee-member .role {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.history-content {
  background: #fff;
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius);
  border: 1px solid rgba(220, 215, 205, 0.8);
  box-shadow: var(--shadow-soft);
  margin-bottom: 2rem;
}

.join-note {
  margin-top: 2.3rem;
  padding: 1.4rem 1.5rem;
  background: linear-gradient(120deg, rgba(31, 79, 122, 0.08), rgba(100, 182, 233, 0.12));
  border-radius: var(--radius);
  border: 1px solid rgba(220, 215, 205, 0.8);
  text-align: center;
}

.join-note a {
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* Join page */
.join-section {
  margin-bottom: 2.2rem;
}

.join-section h2 {
  margin-top: 0;
}

/* Footer */
.site-footer {
  background: var(--color-primary-dark);
  color: white;
  padding: 2.2rem 0;
  text-align: center;
  margin-top: 2.5rem;
}

/* Speakers page */
.speakers-page .speaker-count {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.speaker-list {
  display: grid;
  gap: 1rem;
}

.speaker-entry {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  border: 1px solid rgba(220, 215, 205, 0.8);
  box-shadow: var(--shadow-soft);
}

.speaker-name {
  margin: 0 0 0.5rem;
  color: var(--color-primary-dark);
}

.speaker-talks {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.speaker-talks li {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.3rem 0;
  border-bottom: 1px dashed var(--color-border);
}

.speaker-talks li:last-child {
  border-bottom: none;
}

.speaker-talks .talk-year {
  font-weight: 700;
  color: var(--color-primary);
  min-width: 3rem;
}

.speaker-talks .talk-title {
  font-style: italic;
  color: var(--color-muted);
}

/* Mobile styles */
@media (max-width: 900px) {
  .header-content {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 0.5rem 0 0.4rem;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    width: 100%;
  }

  .hero {
    padding-top: 3.2rem;
  }

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

  .event-card {
    grid-template-columns: 1fr;
  }

  .event-date {
    justify-self: start;
    min-width: 100%;
    flex-direction: row;
    display: flex;
    gap: 0.75rem;
  }
}

/* Redesigned Event Card */
.event-header {
  margin-bottom: 1.25rem;
}

.event-badge {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.event-theme-title {
  margin: 0;
  font-size: 1.4rem;
  line-height: 1.3;
  color: var(--color-primary-dark);
  font-family: "Playfair Display", serif;
}

.event-meta {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
  padding: 1.2rem;
  background: #f8f9fc;
  border-radius: 12px;
  border: 1px solid rgba(214, 224, 236, 0.6);
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-ink);
}

.meta-row.align-start {
  align-items: flex-start;
}

.meta-icon {
  flex-shrink: 0;
  color: var(--color-muted);
  opacity: 0.8;
  margin-top: 0.1rem;
  /* optical alignment */
}

.meta-text {
  font-weight: 600;
  color: var(--color-ink);
}

.meta-location-group {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.location-name {
  font-weight: 700;
  color: var(--color-ink);
}

.location-address {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.map-link {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.map-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.speakers-section {
  border-top: 1px dashed var(--color-border);
  padding-top: 1rem;
}

.speakers-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.speaker {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.5rem;
}

.speaker-name {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.speaker-title {
  font-size: 0.95rem;
  color: var(--color-muted);
  font-style: italic;
  line-height: 1.4;
}

/* Enhancements to card */
.event-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.event-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(21, 34, 52, 0.12);
}