/* ============================================================
   YALE MEDICAL AI SYMPOSIUM 2026 — Stylesheet
   ============================================================ */

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --navy:        #0a1628;
  --blue-dark:   #0d2444;
  --blue-mid:    #1565c0;
  --blue-light:  #1976d2;
  --cyan:        #00f2ff;
  --cyan-dim:    rgba(0, 242, 255, 0.15);
  --white:       #ffffff;
  --off-white:   #f0f7ff;
  --section-light-start: #eaf3ff;
  --section-light-end:   #dce9f8;
  --section-alt-start:   #f0f9ff;
  --section-alt-end:     #e3f2fa;
  --section-sponsor-start: #f1f7fc;
  --section-sponsor-end:   #dceaf6;
  --text-dark:   #0d1b2e;
  --text-mid:    #1e3a5f;
  --text-body:   #2c4a6e;
  --text-muted:  #5a7a9a;
  --border-light: rgba(21, 101, 192, 0.15);
  --border-dark:  rgba(255, 255, 255, 0.10);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  color: var(--text-dark);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.6;
}

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

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

/* ── Typography helpers ──────────────────────────────────── */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}
.section-tag.dark {
  background: rgba(0, 242, 255, 0.12);
  color: var(--cyan);
  border: 1px solid rgba(0, 242, 255, 0.25);
}
.section-tag.light {
  background: rgba(21, 101, 192, 0.08);
  color: var(--blue-mid);
  border: 1px solid rgba(21, 101, 192, 0.18);
}

.section-heading {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.section-heading.light-text { color: var(--white); }
.section-heading.dark-text  { color: var(--text-dark); }

.section-body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-body);
}
.section-body.light-text { color: rgba(255,255,255,0.80); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.22s ease;
  text-decoration: none;
}
.btn-cyan {
  background: var(--cyan);
  color: var(--navy);
}
.btn-cyan:hover { background: #33f5ff; transform: translateY(-1px); }

.btn-glass {
  background: rgba(255,255,255,0.08);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(8px);
}
.btn-glass:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-blue {
  background: var(--blue-mid);
  color: var(--white);
}
.btn-blue:hover { background: var(--blue-light); transform: translateY(-1px); }

.btn-blue-outline {
  background: transparent;
  color: var(--blue-mid);
  border: 1.5px solid var(--blue-mid);
}
.btn-blue-outline:hover {
  background: var(--blue-mid);
  color: var(--white);
}

/* ── Navigation ──────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4rem;
  height: 68px;
  transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
}
#navbar.scrolled {
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,242,255,0.08);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-logo-img {
  height: 28px;
  width: 28px;
  flex-shrink: 0;
  filter: brightness(0) invert(1);
}
.nav-brand-text {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.nav-brand-text strong {
  display: block;
  font-weight: 700;
  color: var(--cyan);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(255,255,255,0.80);
  transition: color 0.2s;
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--cyan); }

.nav-cta {
  background: var(--cyan) !important;
  color: var(--navy) !important;
  padding: 0.55rem 1.4rem !important;
  border-radius: 6px !important;
  font-weight: 700 !important;
}
.nav-cta:hover { background: #33f5ff !important; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

/* ── Hero ────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background-image: url('../assets/images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(10, 22, 40, 0.60) 0%,
    rgba(13, 36, 68, 0.62) 40%,
    rgba(10, 22, 40, 0.82) 100%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 242, 255, 0.12);
  border: 1px solid rgba(0, 242, 255, 0.30);
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero-tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #ffffff 30%, var(--cyan) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-meta {
  display: flex;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.hero-meta-card {
  display: inline-flex;
  align-items: stretch;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.hero-meta-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 2rem;
}

.hero-meta-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.hero-meta-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.01em;
}

.hero-meta-divider {
  width: 1px;
  background: rgba(255, 255, 255, 0.12);
  margin: 0.75rem 0;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Overview Section ────────────────────────────────────── */
#overview {
  background: linear-gradient(160deg, var(--section-light-start), var(--section-light-end));
  padding: 6rem 4rem;
}

.overview-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.overview-header {
  margin-bottom: 3rem;
}

.overview-cards {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  margin-bottom: 4rem;
}

.overview-card {
  background: var(--white);
  border-radius: 12px;
  padding: 2.25rem;
  box-shadow: 0 2px 20px rgba(21,101,192,0.08);
  border: 1px solid var(--border-light);
}

.overview-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

.overview-card-body {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-body);
}

/* ── Symposium Objectives ────────────────────────────────── */
.objectives-heading {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.objectives-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.objective-card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  box-shadow: 0 2px 16px rgba(21,101,192,0.07);
  border: 1px solid var(--border-light);
  transition: box-shadow 0.2s, transform 0.2s;
}
.objective-card:hover {
  box-shadow: 0 8px 32px rgba(21,101,192,0.14);
  transform: translateY(-2px);
}

.objective-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.objective-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.4rem;
}

.objective-desc {
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--text-body);
}

/* ── CFP Section ─────────────────────────────────────────── */
#cfp {
  background: linear-gradient(160deg, #0d2444 0%, #091830 60%, #071020 100%);
  padding: 6rem 4rem;
  position: relative;
  overflow: hidden;
}
#cfp::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,242,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cfp-inner { max-width: 1200px; margin: 0 auto; }

.cfp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.cfp-header-left {}

.cfp-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.cfp-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.68);
  line-height: 1.7;
  max-width: 600px;
}

.cfp-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.cfp-panel {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 2rem;
}

.cfp-panel-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.25rem;
}

.cfp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.cfp-list li {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.5;
}
.cfp-list li::before {
  content: '→';
  color: var(--cyan);
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
}
.cfp-list li strong {
  color: rgba(255,255,255,0.95);
  font-weight: 600;
}

/* ── Submission Timeline ─────────────────────────────────── */
.timeline-heading {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 2.5rem;
  letter-spacing: -0.02em;
  text-align: center;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 860px;
  margin: 0 auto;
}

.timeline-step {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  padding-bottom: 1.75rem;
  position: relative;
}

.timeline-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 27px;
  top: 56px;
  bottom: 0;
  width: 2px;
  background: rgba(255,255,255,0.15);
}

.timeline-circle {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 2px solid var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  position: relative;
  z-index: 1;
  letter-spacing: 0;
}

.timeline-step.highlight .timeline-circle {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--navy);
}

.timeline-card {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 1.25rem 1.75rem;
  margin-top: 4px;
}

.timeline-step.highlight .timeline-card {
  border-color: var(--cyan);
}

.timeline-date {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 0.35rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.timeline-label {
  font-size: 1rem;
  color: var(--white);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.timeline-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.58);
  line-height: 1.55;
}

/* ── Registration & Agenda ───────────────────────────────── */
#registration {
  background: linear-gradient(160deg, var(--section-alt-start), var(--section-alt-end));
  padding: 6rem 4rem;
}

.agenda-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.agenda-section-header {
  text-align: center;
}

.agenda-speakers-type {
  font-weight: 500;
  padding-bottom: 0;
  border-bottom: 2px solid var(--text-dark);
}

.agenda-heading {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.agenda-subheader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.agenda-note {
  font-size: 1rem;
  color: var(--text-mid);
  line-height: 1.5;
  flex: 1;
}

/* ── Agenda Item Cards ──────────────────────────────────── */
.agenda-items {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.agenda-item {
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(10,31,68,0.05);
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.agenda-item--session {
  border-left: 6px solid #1f55a6;
  box-shadow: 0 20px 50px rgba(15,43,70,0.08);
  padding: 2.5rem 2rem;
}

.agenda-time {
  flex-shrink: 0;
  width: 200px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  line-height: 1.4;
  padding-top: 0.15rem;
}

.agenda-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

.agenda-item-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.agenda-bullets {
  list-style: disc;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.agenda-bullets li {
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.5;
}

/* ── Agenda Speakers ─────────────────────────────────────── */
.agenda-speakers {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.agenda-speaker {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.agenda-speaker-labeled {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.agenda-speaker-label-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.agenda-speaker-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: #1f55a6;
  width: 100px;
  text-align: center;
  line-height: 1.2;
}

.agenda-speaker-photo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  flex-shrink: 0;
  border: 1.5px solid #abc0d4;
}

.agenda-speaker-info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}

.agenda-speaker-name {
  font-size: 0.97rem;
  font-weight: 700;
  color: #0f2b46;
  line-height: 1.3;
}

.agenda-speaker-role {
  font-size: 0.88rem;
  color: #5e6e7e;
  line-height: 1.45;
}

.agenda-speaker-talk {
  font-size: 0.95rem;
  font-weight: 600;
  color: #1f55a6;
  line-height: 1.4;
  margin-top: 0.25rem;
}

/* ── Committees ──────────────────────────────────────────── */
#committees {
  background: linear-gradient(160deg, #0d2444 0%, #091830 100%);
  padding: 6rem 4rem;
}

.committees-inner { max-width: 1200px; margin: 0 auto; }

.committees-inner > .section-heading { margin-bottom: 3rem; }

.committee-group { margin-bottom: 5rem; }

.committee-group-title {
  font-size: clamp(1.4rem, 2.5vw, 1.875rem);
  font-weight: 900;
  color: var(--white);
  border-left: 4px solid var(--cyan);
  padding-left: 1.75rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
}

.committee-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.person-card {
  position: relative;
  flex: 0 0 calc((100% - 4.5rem) / 4);
  max-width: calc((100% - 4.5rem) / 4);
  height: 323px;
  background: #221610;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.04), 0 20px 50px rgba(0,0,0,0.16);
}

.person-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.person-card-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #221610 0%, rgba(34,22,16,0) 50%);
  opacity: 0.85;
}

.person-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
}

.person-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.35;
  margin-bottom: 4px;
}

.person-role {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cyan);
  line-height: 1.4;
}

/* ── Contact ─────────────────────────────────────────────── */
#contact {
  background: linear-gradient(160deg, #091830, #0d2444);
  padding: 3rem 4rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.contact-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.contact-label {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
}

.contact-email {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--cyan);
  transition: opacity 0.2s;
}
.contact-email:hover { opacity: 0.8; }

/* ── Sponsorship ─────────────────────────────────────────── */
#sponsorship {
  background: linear-gradient(160deg, var(--section-sponsor-start), var(--section-sponsor-end));
  padding: 5rem 4rem;
  text-align: center;
}

.sponsorship-inner {
  max-width: 600px;
  margin: 0 auto;
}

.sponsorship-inner .section-heading { margin-bottom: 1rem; }
.sponsorship-inner .section-body { margin-bottom: 2rem; }

/* ── Footer ──────────────────────────────────────────────── */
footer {
  background: var(--navy);
  padding: 2rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,0.06);
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.50);
}
.footer-brand strong { color: rgba(255,255,255,0.80); }

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
}

/* ── Scroll Reveal ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  #overview, #cfp, #registration, #committees, #sponsorship { padding: 5rem 2.5rem; }
  #contact { padding: 2.5rem; }
  .overview-cards { gap: 1.25rem; }
  .cfp-content { gap: 1.5rem; }
  .agenda-time { width: 160px; }
}

@media (max-width: 768px) {
  #navbar { padding: 0 1.5rem; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  /* Mobile menu */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(10,22,40,0.97);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .hero-meta-field { padding: 0.75rem 1.25rem; }
  .hero-meta-value { font-size: 0.88rem; }

  .overview-cards,
  .objectives-grid,
  .cfp-content { grid-template-columns: 1fr; }

  .agenda-item {
    flex-direction: column;
    gap: 0.75rem;
  }
  .agenda-time { width: auto; font-size: 0.92rem; }
  .agenda-subheader { flex-direction: column; align-items: flex-start; }
  .person-card {
    flex-basis: calc((100% - 1.5rem) / 2);
    max-width: calc((100% - 1.5rem) / 2);
  }

  #overview, #cfp, #registration, #committees, #sponsorship { padding: 4rem 1.5rem; }
  footer { padding: 1.5rem; flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .committee-grid { justify-content: center; }
  .cfp-header { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-bg-video { display: none; }
}