@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400&family=Inter:wght@400;500;600&display=swap');

:root {
  --color-accent: #8B2635;
  --color-accent-hover: #6d1e2a;
  --color-accent-soft: #f8f2f3;
  --color-text: #1a1816;
  --color-text-muted: #5c5752;
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-border: #e5e2dc;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 720px;
  --header-height: 56px;
  --announcement-height: 2.375rem;
  --site-top-height: calc(var(--header-height) + var(--announcement-height));
  --radius: 6px;
  --radius-sm: 4px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--site-top-height) + 24px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

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

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

/* ── Site top (announcement + header) ── */

.site-top {
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-announcement {
  background: var(--color-accent);
  color: #fff;
  text-align: center;
  padding: 0.5rem 1.5rem;
}

.site-announcement p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.45;
  font-weight: 500;
}

.site-announcement a {
  color: #fff;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-announcement a:hover {
  color: rgba(255, 255, 255, 0.9);
}

/* ── Header ── */

.site-header {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: var(--header-height);
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.375rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links > li {
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.375rem 0.625rem;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  text-decoration: none;
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown > summary {
  list-style: none;
  cursor: pointer;
  padding: 0.375rem 0.625rem;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
}

.nav-dropdown > summary::-webkit-details-marker {
  display: none;
}

.nav-dropdown > summary::after {
  content: " ▾";
  font-size: 0.7em;
}

.nav-dropdown[open] > summary,
.nav-dropdown > summary:hover {
  color: var(--color-accent);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
  list-style: none;
  margin: 0;
  padding: 0.375rem;
}

.dropdown-menu a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--color-text);
  border-radius: 4px;
  font-size: 0.8125rem;
  text-decoration: none;
}

.dropdown-menu a:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  text-decoration: none;
}

/* ── Hero ── */

.hero {
  padding: 1.5rem 1.5rem 1.25rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 140px;
  gap: 1.5rem;
  align-items: center;
}

.hero-eyebrow {
  margin: 0 0 0.375rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-content h1 {
  margin: 0 0 0.625rem;
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-text);
  text-wrap: balance;
}

.hero-meta {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.hero-meta a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hero-register {
  margin: 0.875rem 0 0;
  padding: 0;
}

.hero-photo {
  margin: 0;
}

.hero-photo img {
  width: 100%;
  aspect-ratio: 1;
  max-width: none;
  object-fit: cover;
  object-position: center 45%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.hero-photo figcaption {
  margin-top: 0.375rem;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
}

/* ── Page layout ── */

.page-body {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

/* ── Content ── */

.content section {
  margin-bottom: 0;
  scroll-margin-top: calc(var(--site-top-height) + 24px);
}

.content section + section {
  margin-top: 3.5rem;
  padding-top: 3.5rem;
  border-top: 1px solid var(--color-border);
}

.content section:last-child {
  margin-bottom: 0;
}

.content h2 {
  font-family: var(--font-serif);
  font-size: 1.625rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin: 0 0 1.5rem;
  color: var(--color-text);
  line-height: 1.2;
}

.content h3 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 2.75rem 0 0.875rem;
  color: var(--color-text-muted);
}

.content p {
  margin: 0 0 1rem;
}

.content ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.content li {
  margin-bottom: 0.35rem;
}

.content li:last-child {
  margin-bottom: 0;
}

.overview-more[hidden] {
  display: none;
}

.overview-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.25rem;
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  cursor: pointer;
  transition: color 0.15s ease;
}

.overview-toggle:hover {
  color: var(--color-accent-hover);
}

.overview-chevron {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  transition: transform 0.2s ease;
}

.overview-toggle.is-expanded .overview-chevron {
  transform: rotate(180deg);
}

/* ── Key dates ── */

.key-dates {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
  padding: 1.75rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.date-card-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.date-card-value {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ── Schedule ── */

.schedule-tentative {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.225rem 0.55rem;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 0.5rem;
  transform: translateY(-0.125rem);
  color: var(--color-text-muted);
  background: var(--color-border);
}

.status-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.225rem 0.55rem;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 0.5rem;
  transform: translateY(-0.125rem);
}

.status-badge--closed {
  color: #fff;
  background: var(--color-text-muted);
}

.status-badge--virtual {
  color: #3d5168;
  background: #dce8f5;
}

.cfp-status {
  margin: -0.25rem 0 1.5rem;
  padding: 1rem 1.125rem;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
}

.cfp-status p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
}

.date-card--closed {
  opacity: 0.72;
}

.date-card--closed .date-card-value {
  text-decoration: line-through;
  text-decoration-color: var(--color-text-muted);
}

.schedule-date {
  margin: -0.75rem 0 1.75rem;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
  color: var(--color-text-muted);
}

.schedule-welcome {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

.schedule-people {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem 1.125rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.schedule-person {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
}

.schedule-person-name {
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.schedule {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
}

.schedule-item {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 1.25rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.schedule-time {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.schedule-time-mdt {
  font-size: 0.8125rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
  white-space: nowrap;
}

.schedule-title {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.45;
}

.schedule-title--with-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.schedule-icon {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
}

.schedule-item--refreshment {
  padding: 0.75rem 0;
}

.schedule-item--refreshment .schedule-time-mdt,
.schedule-item--refreshment .schedule-title {
  color: var(--color-text);
  font-style: italic;
  font-weight: 500;
}

.schedule-item--refreshment .schedule-icon,
.schedule-item--break .schedule-icon,
.schedule-item--activity .schedule-icon {
  display: none;
}

.schedule-item--activity .schedule-time-mdt,
.schedule-item--activity .schedule-title {
  color: var(--color-text);
  font-weight: 500;
}

.schedule-featured {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.schedule-featured-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.schedule-featured-copy .status-badge {
  margin-left: 0;
  transform: none;
}

.schedule-avatar {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
  background: var(--color-border);
}

.schedule-avatar-wrap {
  flex-shrink: 0;
  padding: 3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent) 0%, rgba(139, 38, 53, 0.45) 100%);
  box-shadow: 0 2px 10px rgba(139, 38, 53, 0.18);
}

.schedule-avatar-wrap--fireside {
  background: linear-gradient(135deg, #b45309 0%, rgba(139, 38, 53, 0.55) 100%);
  box-shadow: 0 2px 10px rgba(180, 83, 9, 0.2);
}

.schedule-avatar-wrap .schedule-avatar {
  width: 80px;
  height: 80px;
  border: 2.5px solid var(--color-surface);
  box-shadow: none;
}

.schedule-icon--featured {
  color: var(--color-accent);
}

.schedule-item--fireside .schedule-icon--featured {
  color: #b45309;
}

.schedule-item--featured .schedule-title {
  margin: 0;
}

.schedule-item--keynote,
.schedule-item--fireside {
  align-items: center;
  background: linear-gradient(90deg, var(--color-accent-soft) 0%, #fff 72%);
  border: 1px solid rgba(139, 38, 53, 0.18);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(139, 38, 53, 0.07);
  padding: 1.125rem 1rem 1.125rem 0.875rem;
  margin-left: -0.75rem;
  margin-right: -0.75rem;
}

.schedule-item--fireside {
  background: linear-gradient(90deg, #fdf6ef 0%, #fff 72%);
  border-color: rgba(180, 83, 9, 0.22);
  border-left-color: #b45309;
  box-shadow: 0 2px 12px rgba(180, 83, 9, 0.08);
}

.schedule-item--keynote .schedule-time-mdt,
.schedule-item--fireside .schedule-time-mdt {
  color: var(--color-accent);
  font-weight: 700;
}

.schedule-item--fireside .schedule-time-mdt {
  color: #b45309;
}

.schedule-item--keynote .schedule-title,
.schedule-item--fireside .schedule-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-text);
}

.schedule-item--break {
  padding: 0.75rem 0;
}

.schedule-item--break .schedule-time-mdt {
  color: var(--color-text);
  font-weight: 600;
}

.schedule-item--break .schedule-title--with-icon {
  align-items: center;
}

.schedule-break-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  font-style: normal;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text);
  background: var(--color-border);
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
}

.schedule-item--talks {
  align-items: start;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

.schedule-content {
  min-width: 0;
}

.schedule-item--talks .schedule-title {
  margin: 0 0 1rem;
  padding-bottom: 0.625rem;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

/* ── Talk cards (embedded in schedule) ── */

.talk-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.talk-card {
  border: none;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  background: transparent;
  overflow: hidden;
}

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

.talk-card-toggle {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  padding: 0.875rem 0;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.talk-card-toggle:hover {
  background: none;
}

.talk-card-toggle:hover .talk-name {
  color: var(--color-accent);
}

.talk-card.is-expanded .talk-card-toggle {
  border-bottom: none;
}

.talk-order {
  flex-shrink: 0;
  width: 1.375rem;
  margin-top: 0.3rem;
  border-radius: 0;
  background: none;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.35;
  text-align: left;
}

.talk-avatars {
  display: flex;
  flex-shrink: 0;
  gap: 0.35rem;
  margin-top: 0.05rem;
}

.talk-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
  background: var(--color-border);
}

.talk-avatar--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.talk-panel {
  margin-top: 1rem;
  padding: 0.875rem 0 0;
  border: none;
  border-top: 1px solid var(--color-border);
  border-radius: 0;
  background: transparent;
}

.talk-panel-heading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.talk-panel-icon {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  color: var(--color-accent);
}

.talk-panel-speakers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.talk-panel-speaker {
  display: flex;
  flex: 0 0 auto;
}

.talk-panel .talk-avatars {
  margin-top: 0;
}

.talk-summary {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding-top: 0.1rem;
}

.talk-card-toggle .talk-name {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.talk-card-toggle .talk-affiliation {
  margin: 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.talk-card-toggle .talk-title {
  margin: 0.3rem 0 0;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.talk-themes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.45rem;
}

.talk-theme {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.625rem;
  font-weight: 500;
  line-height: 1.3;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  color: var(--color-accent);
  background: rgba(139, 38, 53, 0.08);
  border: 1px solid rgba(139, 38, 53, 0.14);
}

.talk-theme--session {
  color: #2d6a4f;
  background: rgba(45, 106, 79, 0.1);
  border-color: rgba(45, 106, 79, 0.22);
}

.talk-chevron {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.35rem;
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
}

.talk-card.is-expanded .talk-chevron {
  transform: rotate(180deg);
}

.talk-card-details {
  padding: 0 0 1rem 2.125rem;
}

.talk-card-details[hidden] {
  display: none;
}

.talk-contributors {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.talk-abstract {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

.talk-abstract p {
  margin: 0 0 0.75rem;
}

.talk-abstract p:last-child {
  margin-bottom: 0;
}

/* ── CTA ── */

.cta-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin: 2rem 0;
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--color-text);
}

.cta-card p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ── Buttons ── */

.btn {
  display: inline-block;
  padding: 0.5rem 1.125rem;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.03em;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
}

/* ── People ── */

.people-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 2.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.people-grid li {
  margin: 0;
}

.person-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
  text-decoration: none;
  color: var(--color-text);
}

.person-card:hover {
  color: var(--color-text);
  text-decoration: none;
}

.person-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-border);
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  transition: border-color 0.15s;
}

.person-card:hover .person-avatar {
  border-color: var(--color-text-muted);
}

.person-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-name {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.35;
}

.person-card:hover .person-name {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ── Contact ── */

.content section + section#contact {
  margin-top: 2.5rem;
  padding-top: 0;
  border-top: none;
}

#contact h2 {
  margin-bottom: 0.75rem;
  font-size: 1.375rem;
}

#contact p {
  margin: 0;
  max-width: 36rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* ── Footer ── */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 1.5rem 2.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--color-text-muted);
}

.site-footer a:hover {
  color: var(--color-accent);
}

.site-footer p {
  margin: 0;
}

/* ── Responsive ── */

@media (max-width: 768px) {
  .hero {
    padding: 1.25rem 1.5rem 1rem;
  }

  .hero-inner {
    grid-template-columns: 1fr auto;
    gap: 1rem;
    align-items: start;
  }

  .hero-photo {
    width: 88px;
  }

  .hero-photo figcaption {
    display: none;
  }

  .hero-content h1 {
    font-size: 1.375rem;
  }

  .hero-meta {
    font-size: 0.8125rem;
  }

  .hero-register {
    margin-top: 0.75rem;
  }

  .hero-register .btn {
    font-size: 0.75rem;
    padding: 0.4375rem 0.875rem;
  }

  .schedule-item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
    padding: 0.75rem 0;
  }

  .schedule-item--break,
  .schedule-item--refreshment,
  .schedule-item--activity,
  .schedule-item--keynote,
  .schedule-item--fireside {
    margin-left: 0;
    margin-right: 0;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .schedule-featured {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .talk-card-toggle {
    flex-wrap: wrap;
    padding: 0.75rem 0;
    gap: 0.625rem;
  }

  .talk-card-details {
    padding-left: 0;
  }

  .talk-summary {
    flex-basis: calc(100% - 2.25rem);
    order: 3;
  }

  .talk-chevron {
    order: 4;
    margin-left: auto;
    margin-top: 0;
  }

  .talk-avatars {
    order: 2;
  }

  .talk-order {
    order: 1;
  }

  .key-dates {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .cta-group {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .nav-toggle {
    display: block;
  }

  .site-header {
    position: relative;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 101;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    padding: 0.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    gap: 0;
  }

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

  .nav-links a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links > li:last-child a,
  .nav-links > li:last-child .nav-dropdown > summary {
    border-bottom: none;
  }

  .nav-dropdown > summary {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding: 0 0 0.5rem 0.75rem;
    background: transparent;
  }

  .nav-inner {
    position: static;
  }

  .people-grid {
    gap: 2rem;
  }
}