/* =============================================
   AIAS+ 2026 Workshop Website — Stylesheet
   ============================================= */

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

:root {
  /* Color palette — deep academic blues with warm accents */
  --color-primary: #1a365d;
  --color-primary-light: #2b6cb0;
  --color-primary-lighter: #3182ce;
  --color-accent: #e53e3e;
  --color-accent-warm: #dd6b20;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-bg-dark: #0f1b2d;
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-text-inverse: #ffffff;
  --color-border: #e2e8f0;
  --color-highlight: #ebf8ff;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  /* Spacing */
  --section-padding: 6rem 0;
  --container-max: 1200px;

  /* Transitions */
  --transition: 0.3s ease;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary-light); text-decoration: none; }
a:hover { color: var(--color-primary); }

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  padding: 0.6rem 0;
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--color-text-inverse);
  transition: var(--transition);
}

.navbar.scrolled .nav-logo {
  color: var(--color-primary-lighter);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.2rem;
  align-items: center;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

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

.navbar.scrolled .nav-links a:hover {
  color: var(--color-primary);
  background: var(--color-highlight);
}

.nav-cta {
  background: var(--color-accent) !important;
  color: #fff !important;
  padding: 0.5rem 1.2rem !important;
  border-radius: 6px !important;
  font-weight: 600 !important;
  transition: var(--transition);
}

.nav-cta:hover {
  background: #c53030 !important;
  color: #fff !important;
}

.navbar.scrolled .nav-cta {
  background: var(--color-accent) !important;
  color: #fff !important;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: var(--transition);
}

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

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: #c53030;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(229, 62, 62, 0.35);
}

.btn-secondary {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, #0369a1, #075985);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.05rem;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #020617 0%, #0b1329 50%, #111e38 100%); /* Deeper dark blue gradient */
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(49, 130, 206, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(229, 62, 62, 0.04) 0%, transparent 50%);
  z-index: 0;
}

.hero-neurons {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.85; /* Increased opacity for clear visibility of lines */
  z-index: 1;
  pointer-events: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(2, 6, 23, 0.3) 0%, rgba(2, 6, 23, 0.8) 100%); /* Darker overlay mask */
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 850px;
  padding: 2rem;
  z-index: 3;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 2rem;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.04);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.95), 0 2px 8px rgba(0, 0, 0, 0.7); /* Extra strong text shadow */
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9), 0 1px 4px rgba(0, 0, 0, 0.6); /* Extra strong text shadow */
}

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

/* --- Registration Banner --- */
.registration-banner {
  background: linear-gradient(135deg, #1a365d, #2b6cb0);
  padding: 2rem 0;
}

.banner-content {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.banner-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.banner-text {
  flex: 1;
  min-width: 300px;
}

.banner-text h3 {
  color: #fff;
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}

.banner-text p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  line-height: 1.5;
}

.banner-buttons, .cta-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.cta-actions {
  justify-content: center;
}

.banner-content .btn {
  flex-shrink: 0;
  white-space: nowrap;
}

/* --- Invited Speakers Section --- */
/* --- Invited Speakers Section (Minimalist & High-Impact) --- */
.speakers-section {
  background: radial-gradient(circle at 50% 0%, #152238 0%, #0c1424 70%, #080d1a 100%);
  padding: 6rem 0;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.speakers-panel {
  max-width: 1080px;
  margin: 0 auto;
}

.speakers-panel-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3.5rem;
}

.speakers-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #63b3ed;
  margin-bottom: 0.75rem;
}

.speakers-panel-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  color: #ffffff;
  margin-bottom: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.speakers-lead {
  color: rgba(226, 232, 240, 0.85);
  font-size: 1.05rem;
  line-height: 1.75;
  font-weight: 300;
}

.speakers-pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.speaker-pillar-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.speaker-pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(99, 179, 237, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.speaker-pillar-card:hover {
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(99, 179, 237, 0.25);
  transform: translateY(-2px);
}

.speaker-pillar-card:hover::before {
  opacity: 1;
}

.pillar-num {
  font-family: monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: #63b3ed;
  letter-spacing: 0.08em;
  display: inline-block;
  margin-bottom: 0.85rem;
  padding: 0.2rem 0.5rem;
  background: rgba(99, 179, 237, 0.08);
  border-radius: 4px;
  border: 1px solid rgba(99, 179, 237, 0.15);
}

.speaker-pillar-card h4 {
  color: #ffffff;
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 0.55rem;
  line-height: 1.4;
}

.speaker-pillar-card p {
  color: rgba(203, 213, 225, 0.75);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

.speakers-status-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 50px;
  max-width: 680px;
  margin: 0 auto;
  color: rgba(226, 232, 240, 0.75);
  font-size: 0.88rem;
  text-align: center;
}

.status-pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #63b3ed;
  box-shadow: 0 0 8px #63b3ed;
  flex-shrink: 0;
}

/* --- Section Utilities --- */
.section {
  padding: var(--section-padding);
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-lighter);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.lead {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--color-text);
  font-weight: 400;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 3rem;
  align-items: start;
}

.about-main p {
  margin-bottom: 1.25rem;
}

.info-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.info-card h4 {
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.info-list {
  list-style: none;
}

.info-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.info-list li:last-child {
  border-bottom: none;
}

.highlight-card {
  background: linear-gradient(135deg, #ebf8ff, #e6fffa);
  border-color: #bee3f8;
}

.highlight-card p {
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --- Paper Preview Card --- */
.paper-card {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.paper-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.paper-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.paper-thumbnail {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.paper-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.4s ease;
}

.paper-card:hover .paper-thumbnail img {
  transform: scale(1.03);
}

.paper-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 54, 93, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.paper-card:hover .paper-overlay {
  opacity: 1;
}

.paper-overlay span {
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.6rem 1.5rem;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  backdrop-filter: blur(4px);
}

.paper-meta {
  padding: 1.25rem;
}

.paper-journal {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.4rem;
}

.paper-meta h4 {
  font-size: 0.95rem;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
  line-height: 1.4;
  font-weight: 600;
}

.paper-authors {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.4;
}

/* --- Objectives (Editorial & Research-Grade Layout) --- */
.objectives-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 820px) {
  .objectives-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.objective-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-left: 3px solid transparent;
  border-radius: 8px;
  padding: 2.5rem 2.25rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  display: flex;
  flex-direction: column;
}

.objective-card:hover {
  border-left-color: var(--color-primary-lighter);
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
}

.objective-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid #f1f5f9;
}

.objective-num {
  font-family: monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary-lighter);
  text-transform: uppercase;
}

.objective-category {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #94a3b8;
}

.objective-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: #0f172a;
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.objective-card p {
  font-size: 0.96rem;
  color: #475569;
  line-height: 1.75;
  margin: 0;
  font-weight: 400;
  flex-grow: 1;
}

/* --- Topics --- */
.topics-list {
  max-width: 800px;
  margin: 0 auto;
}

.topic-item {
  display: flex;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}

.topic-item:last-child {
  border-bottom: none;
}

.topic-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-lighter);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
  width: 50px;
}

.topic-content h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.topic-content p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* --- Schedule --- */
.schedule-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.schedule-timeline::before {
  content: '';
  position: absolute;
  left: 70px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary-lighter), var(--color-border));
}

.schedule-item {
  display: flex;
  gap: 2.5rem;
  padding: 2rem 0;
  position: relative;
}

.schedule-time {
  flex-shrink: 0;
  width: 100px;
  text-align: center;
  position: relative;
}

.schedule-time::after {
  content: '';
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary-lighter);
  border: 3px solid var(--color-bg-alt);
}

.time-label {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

.schedule-content h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.schedule-title-detail {
  font-style: italic;
  color: var(--color-primary-light);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.schedule-content p:last-child {
  color: var(--color-text-light);
  font-size: 0.92rem;
}

/* --- Call for Papers --- */
.cfp-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}

.cfp-main h3 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin: 2rem 0 1rem;
  font-weight: 600;
}

.cfp-main h3:first-of-type {
  margin-top: 1.5rem;
}

.submission-types {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.submission-type {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-alt);
  font-size: 0.9rem;
}

.submission-badge {
  background: var(--color-primary);
  color: #fff;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
}

.criteria-list {
  list-style: none;
  padding: 0;
}

.criteria-list li {
  padding: 0.6rem 0 0.6rem 1.5rem;
  position: relative;
  font-size: 0.95rem;
}

.criteria-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary-lighter);
  font-weight: 700;
}

.date-highlight {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.small-text {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

.publication-opportunities-card {
  background: linear-gradient(135deg, rgba(66, 153, 225, 0.08), rgba(26, 54, 93, 0.05));
  border-left: 4px solid var(--color-primary-lighter);
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  margin-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* --- Important Dates --- */
.dates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
  max-width: 900px;
  margin: 0 auto;
}

.date-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: var(--transition);
}

.date-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.date-status {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
  min-height: 1.2rem;
}

.date-card.passed .date-status {
  color: #38a169;
}

.date-card.upcoming .date-status {
  color: var(--color-accent);
}

.date-card.featured {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-color: transparent;
}

.date-card.featured .date-status,
.date-card.featured .date-value,
.date-card.featured .date-label {
  color: #fff;
}

.date-value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 0.3rem;
}

.date-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.date-card.passed {
  opacity: 0.7;
}

/* --- Organizers --- */
.organizers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.organizer-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.organizer-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.organizer-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-lighter));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.3rem;
  margin: 0 auto 1.25rem;
  letter-spacing: 0.05em;
  overflow: hidden;
  border: 1.5px solid rgba(66, 153, 225, 0.15);
}

.organizer-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.organizer-card h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.organizer-role {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.2rem;
}

.organizer-role-secondary {
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-top: -0.1rem;
  margin-bottom: 0.75rem;
}

.organizer-affiliation {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}

.organizer-affiliation-secondary {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.organizer-bio {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.organizer-email {
  font-size: 0.85rem;
  color: var(--color-primary-light);
  font-weight: 500;
}

.additional-pc {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem;
  background: var(--color-highlight);
  border-radius: 12px;
}

.additional-pc h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.additional-pc p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- Outcomes --- */
.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.outcome-item {
  text-align: center;
  padding: 2rem;
}

.outcome-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.outcome-item h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.outcome-item p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, #0f1b2d, #1a365d);
  text-align: center;
  padding: 5rem 0;
}

.cta-content h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: #fff;
  margin-bottom: 1rem;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 550px;
  margin: 0 auto 2rem;
}

.cta-note {
  font-size: 0.85rem !important;
  margin-top: 1.5rem !important;
  color: rgba(255, 255, 255, 0.5) !important;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.footer p {
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.7);
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

/* --- Responsive --- */
@media (max-width: 968px) {
  .about-grid,
  .cfp-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 4rem 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 0 0 12px 12px;
  }

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

  .nav-links a {
    color: var(--color-text) !important;
    padding: 0.75rem 1rem;
    width: 100%;
  }

  .nav-links a:hover {
    background: var(--color-highlight) !important;
  }

  .hero {
    min-height: 90vh;
  }

  .banner-content {
    flex-direction: column;
    text-align: center;
  }

  .schedule-timeline::before {
    display: none;
  }

  .schedule-item {
    flex-direction: column;
    gap: 1rem;
  }

  .schedule-time {
    width: auto;
    text-align: left;
  }

  .schedule-time::after {
    display: none;
  }

  .topic-item {
    gap: 1rem;
  }

  .topic-number {
    width: 35px;
    font-size: 1.5rem;
  }

  .organizers-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}