/* ============================================================
   ArogyaMind — Main Stylesheet
   Colors: Teal (#1B6B5A), Purple (#5B4B8A), Warm Cream (#FDF8F2)
   ============================================================ */

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

:root {
  --primary:    #1B6B5A;
  --primary-lt: #2A9D8F;
  --secondary:  #5B4B8A;
  --accent:     #E76F51;
  --gold:       #F4A261;
  --bg:         #FDF8F2;
  --bg-alt:     #F0EBE3;
  --surface:    #FFFFFF;
  --text:       #2C3038;
  --text-muted: #6B7280;
  --border:     #E2D9CE;
  --success:    #2A9D8F;
  --radius:     12px;
  --radius-lg:  20px;
  --shadow:     0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg:  0 12px 48px rgba(0,0,0,0.12);
  --transition: 0.25s ease;
  --max-width:  1200px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-lt); }

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

/* ── TYPOGRAPHY ──────────────────────────────────────────── */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600; line-height: 1.35; }
h4 { font-size: 1rem; font-weight: 600; }
p  { font-size: 1rem; color: var(--text-muted); }

/* ── LAYOUT HELPERS ──────────────────────────────────────── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { color: var(--text); margin-bottom: 12px; }
.section-header p  { font-size: 1.1rem; max-width: 600px; margin: 0 auto; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); gap: 28px; }

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 50px;
  font-size: 1rem; font-weight: 600; cursor: pointer;
  border: 2px solid transparent; transition: all var(--transition);
  text-decoration: none;
}
.btn-primary   { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-lt); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(27,107,90,0.3); }
.btn-secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-accent    { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #d4634a; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(231,111,81,0.35); }
.btn-full { width: 100%; justify-content: center; }

/* ── TAG / BADGE ─────────────────────────────────────────── */
.tag {
  display: inline-block; padding: 4px 12px; border-radius: 50px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
}
.tag-primary  { background: rgba(27,107,90,0.12); color: var(--primary); }
.tag-secondary{ background: rgba(91,75,138,0.12); color: var(--secondary); }
.tag-accent   { background: rgba(231,111,81,0.12); color: var(--accent); }
.tag-new      { background: var(--accent); color: #fff; }

/* ── ANNOUNCEMENT BANNER ─────────────────────────────────── */
#announcement-banner {
  background: linear-gradient(135deg, var(--secondary), #7B6BA8);
  color: #fff; text-align: center;
  padding: 12px 24px; font-size: 0.9rem; font-weight: 500;
}
#announcement-banner a { color: #FFD700; font-weight: 700; }

/* ── NAVIGATION ──────────────────────────────────────────── */
#navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(253,248,242,0.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
#navbar.scrolled { box-shadow: var(--shadow); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; max-width: var(--max-width); margin: 0 auto;
}

.nav-logo {
  display: flex; align-items: center; gap: 10px; text-decoration: none;
}
.nav-logo-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-lt));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
}
.nav-logo-text { font-size: 1.3rem; font-weight: 800; color: var(--text); }
.nav-logo-text span { color: var(--primary); }

.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-muted); }
.nav-links a:hover { color: var(--primary); }

.nav-cta { display: flex; align-items: center; gap: 12px; }

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

/* ── HERO SECTION ────────────────────────────────────────── */
#hero {
  background: linear-gradient(160deg, #FDF8F2 0%, #EDF4F2 40%, #F0EBF8 100%);
  padding: 100px 0 80px; position: relative; overflow: hidden;
}
#hero::before {
  content: ''; position: absolute; top: -100px; right: -100px;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(42,157,143,0.08), transparent 70%);
  pointer-events: none;
}
#hero::after {
  content: ''; position: absolute; bottom: -80px; left: -80px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(91,75,138,0.07), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center; position: relative; z-index: 1;
}
.hero-content { }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(27,107,90,0.1); color: var(--primary);
  padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 600;
  margin-bottom: 24px;
}
.hero-content h1 { color: var(--text); margin-bottom: 24px; }
.hero-content h1 em { font-style: normal; color: var(--primary); }
.hero-content p   { font-size: 1.15rem; margin-bottom: 40px; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.hero-card {
  background: var(--surface); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform var(--transition);
}
.hero-card:hover { transform: translateY(-4px); }
.hero-card:first-child { grid-column: 1 / -1; background: linear-gradient(135deg, var(--primary), var(--primary-lt)); color: #fff; }
.hero-card:first-child p { color: rgba(255,255,255,0.85); }
.hero-card-icon { font-size: 2rem; margin-bottom: 12px; }
.hero-card h3 { font-size: 1rem; margin-bottom: 6px; }
.hero-card:first-child h3 { color: #fff; }

/* ── HERO VIDEO ──────────────────────────────────────────── */
.hero-video-wrap {
  position: relative; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-lg);
  background: #000;
  border: 3px solid rgba(27,107,90,0.2);
}
.hero-video-wrap video {
  width: 100%; display: block;
  max-height: 420px; object-fit: cover;
}
.hero-video-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 14px 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 100%);
  display: flex; align-items: center; gap: 10px;
}
.hero-video-label {
  background: var(--accent); color: #fff;
  padding: 3px 10px; border-radius: 50px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em;
}
.hero-video-title {
  color: #fff; font-weight: 600; font-size: 0.95rem;
}

/* ── STATS BAR ───────────────────────────────────────────── */
#stats {
  background: var(--primary);
  padding: 32px 0;
}
.stats-inner {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0; text-align: center;
}
.stat-item {
  padding: 16px 24px;
  border-right: 1px solid rgba(255,255,255,0.2);
}
.stat-item:last-child { border-right: none; }
.stat-number { font-size: 1.8rem; line-height: 1; margin-bottom: 6px; }
.stat-label  { font-size: 0.85rem; color: rgba(255,255,255,0.85); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── RESOURCES SECTION ───────────────────────────────────── */
#resources { background: var(--bg); }

.resource-card {
  background: var(--surface); border-radius: var(--radius);
  padding: 32px; border: 1px solid var(--border);
  transition: all var(--transition); cursor: pointer;
  display: flex; flex-direction: column; gap: 12px;
  text-decoration: none; color: inherit;
}
.resource-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-lt); }
.resource-icon { font-size: 2.5rem; }
.resource-card h3 { color: var(--text); margin-bottom: 4px; }
.resource-card p  { font-size: 0.95rem; flex-grow: 1; }
.resource-footer  { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.resource-link    { font-size: 0.9rem; font-weight: 600; color: var(--primary); display: flex; align-items: center; gap: 4px; }

/* ── RESEARCH UPDATES ────────────────────────────────────── */
#research { background: var(--bg-alt); }

.research-meta {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 40px; flex-wrap: wrap; gap: 16px;
}
.research-badge {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border);
  padding: 8px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 600; color: var(--text-muted);
}
.research-badge::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

.research-article {
  background: var(--surface); border-radius: var(--radius);
  padding: 28px 32px; border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  transition: all var(--transition); margin-bottom: 20px;
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 24px; align-items: start;
  text-decoration: none; color: inherit;
}
.research-article:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.research-article.featured { border-left-color: var(--accent); }

.research-date-block { text-align: center; min-width: 60px; }
.research-date-day   { font-size: 1.8rem; font-weight: 800; color: var(--primary); line-height: 1; }
.research-date-month { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); font-weight: 600; }

.research-body h3    { color: var(--text); margin-bottom: 8px; font-size: 1.1rem; }
.research-body p     { font-size: 0.95rem; margin-bottom: 12px; }
.research-source     { font-size: 0.8rem; color: var(--text-muted); font-style: italic; }
.research-read-more  { font-size: 0.85rem; font-weight: 600; color: var(--primary); white-space: nowrap; }

/* ── COMMUNITY SECTION ───────────────────────────────────── */
#community { background: var(--bg); }

.testimonial-card {
  background: var(--surface); border-radius: var(--radius-lg);
  padding: 36px; border: 1px solid var(--border);
  position: relative; transition: all var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.testimonial-card::before {
  content: '\201C'; font-size: 5rem; color: var(--primary); opacity: 0.12;
  position: absolute; top: 12px; left: 24px; line-height: 1; font-family: Georgia, serif;
}
.testimonial-text  { font-size: 1rem; color: var(--text); line-height: 1.75; margin-bottom: 24px; padding-top: 24px; }
.testimonial-author { display: flex; align-items: center; gap: 14px; }
.testimonial-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-lt));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: #fff; font-size: 0.9rem; flex-shrink: 0;
}
.testimonial-name { font-weight: 700; color: var(--text); font-size: 0.95rem; }
.testimonial-role { font-size: 0.82rem; color: var(--text-muted); }

.community-cta-block {
  text-align: center; padding: 56px 40px;
  background: linear-gradient(135deg, rgba(27,107,90,0.06), rgba(91,75,138,0.06));
  border-radius: var(--radius-lg); border: 1px solid var(--border); margin-top: 48px;
}
.community-cta-block p { font-size: 1.1rem; margin-bottom: 28px; max-width: 520px; margin-left: auto; margin-right: auto; }

/* ── EVENTS SECTION ──────────────────────────────────────── */
#events { background: var(--bg-alt); }

.event-card {
  background: var(--surface); border-radius: var(--radius);
  padding: 24px 28px; border: 1px solid var(--border);
  display: grid; grid-template-columns: 80px 1fr auto;
  gap: 20px; align-items: center;
  transition: all var(--transition);
}
.event-card:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.event-card.featured { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(231,111,81,0.2); }

.event-date-block { text-align: center; }
.event-day-num    { font-size: 2rem; font-weight: 800; color: var(--primary); line-height: 1; }
.event-month      { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); font-weight: 600; }
.event-body h3    { font-size: 1.05rem; color: var(--text); margin-bottom: 4px; }
.event-body p     { font-size: 0.9rem; margin-bottom: 8px; }
.event-meta       { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.event-time       { font-size: 0.82rem; color: var(--text-muted); font-weight: 500; }
.event-actions { display: flex; flex-direction: column; gap: 8px; align-items: flex-end; }

.events-list { display: flex; flex-direction: column; gap: 16px; }

/* ── NEWSLETTER TEASER (homepage) ────────────────────────── */
#newsletter { background: linear-gradient(160deg, var(--secondary) 0%, #3D2F6B 100%); }
.newsletter-teaser {
  text-align: center; padding: 80px 24px;
}
.newsletter-teaser-icon { font-size: 3rem; margin-bottom: 20px; }
.newsletter-teaser h2 { color: #fff; margin-bottom: 16px; }
.newsletter-teaser p  { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 560px; margin: 0 auto 36px; }

/* ── NEWSLETTER FULL PAGE ────────────────────────────────── */
.newsletter-page-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 72px; align-items: start; padding: 72px 0;
}
.newsletter-page-content h2 { margin-bottom: 16px; }
.newsletter-page-content p  { font-size: 1.05rem; margin-bottom: 28px; }
.newsletter-features   { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 0; }
.newsletter-features li {
  display: flex; align-items: center; gap: 12px;
  color: var(--text); font-size: 0.95rem;
}
.newsletter-features li::before {
  content: '✓'; width: 24px; height: 24px; border-radius: 50%;
  background: rgba(27,107,90,0.15); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.75rem; flex-shrink: 0;
}

/* ── SHARED FORM STYLES ──────────────────────────────────── */
.form-box {
  background: var(--surface); border-radius: var(--radius-lg);
  padding: 40px; box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}
.form-box h3 { color: var(--text); margin-bottom: 6px; }
.form-box .form-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 28px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 2px solid var(--border); border-radius: var(--radius);
  font-size: 0.95rem; color: var(--text); background: var(--bg);
  transition: border-color var(--transition); outline: none;
  font-family: inherit;
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary-lt); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }

.form-checkbox { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 20px; }
.form-checkbox input { width: auto; margin-top: 3px; flex-shrink: 0; }
.form-checkbox label { font-size: 0.85rem; color: var(--text-muted); font-weight: 400; cursor: pointer; }
.privacy-note { font-size: 0.8rem; color: var(--text-muted); text-align: center; margin-top: 12px; }

.form-success {
  display: none; text-align: center; padding: 28px;
  background: rgba(42,157,143,0.1); border-radius: var(--radius);
  border: 2px solid var(--success);
}
.form-success .success-icon { font-size: 2.5rem; margin-bottom: 12px; }
.form-success h4 { color: var(--primary); margin-bottom: 8px; }
.form-success p  { font-size: 0.9rem; }

/* ── INNER PAGE STYLES ───────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lt) 100%);
  padding: 56px 0 48px;
}
.page-hero .breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem; color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}
.page-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
.page-hero .breadcrumb a:hover { color: #fff; }
.page-hero .breadcrumb span { color: rgba(255,255,255,0.5); }
.page-hero h1 { color: #fff; font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 12px; }
.page-hero .page-hero-sub { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 620px; }
.page-hero .page-tag { display: inline-block; background: rgba(255,255,255,0.2); color: #fff; padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 16px; }

.page-body { padding: 64px 0; }
.page-content { max-width: 800px; }
.page-content h2 { font-size: 1.6rem; color: var(--text); margin: 40px 0 16px; padding-top: 8px; border-top: 2px solid var(--border); }
.page-content h2:first-child { margin-top: 0; border-top: none; padding-top: 0; }
.page-content h3 { font-size: 1.15rem; color: var(--text); margin: 24px 0 10px; }
.page-content p  { font-size: 1rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.8; }
.page-content ul, .page-content ol { padding-left: 20px; margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
.page-content li { font-size: 1rem; color: var(--text-muted); line-height: 1.7; }
.page-content strong { color: var(--text); font-weight: 600; }
.page-content a { color: var(--primary); font-weight: 500; }

.info-box {
  background: rgba(27,107,90,0.07); border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 20px 24px; margin: 24px 0;
}
.info-box.warning { background: rgba(231,111,81,0.08); border-left-color: var(--accent); }
.info-box p { margin: 0; color: var(--text); }

.card-grid-inner { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; margin: 24px 0; }
.mini-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.mini-card .mc-icon { font-size: 1.8rem; margin-bottom: 10px; }
.mini-card h4 { color: var(--text); margin-bottom: 6px; }
.mini-card p  { font-size: 0.88rem; margin: 0; }

.page-sidebar { padding-top: 8px; }
.sidebar-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.sidebar-card h4 { color: var(--text); margin-bottom: 14px; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.05em; }
.sidebar-card ul { list-style: none; display: flex; flex-direction: column; gap: 10px; padding: 0; }
.sidebar-card ul li a { font-size: 0.9rem; color: var(--primary); font-weight: 500; display: flex; align-items: center; gap: 6px; }
.sidebar-card ul li a:hover { color: var(--primary-lt); }

.page-layout { display: grid; grid-template-columns: 1fr 300px; gap: 56px; align-items: start; }

@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
  .page-sidebar { padding-top: 0; }
  .newsletter-page-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* ── FOOTER ──────────────────────────────────────────────── */
#site-footer {
  background: #1A1A2E; color: rgba(255,255,255,0.75);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-brand .nav-logo-text { color: #fff; margin-bottom: 16px; display: block; }
.footer-brand .nav-logo-text span { color: var(--primary-lt); }
.footer-brand p { font-size: 0.9rem; max-width: 300px; line-height: 1.7; }

.footer-col h4 { color: #fff; margin-bottom: 16px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.06em; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: color var(--transition); }
.footer-col ul li a:hover { color: #fff; }

.social-links { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.social-link  { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; color: rgba(255,255,255,0.6); }
.social-link:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 28px; text-align: center;
}
.footer-disclaimer { font-size: 0.8rem; color: rgba(255,255,255,0.4); line-height: 1.7; max-width: 700px; margin: 0 auto 12px; }
.footer-copyright   { font-size: 0.82rem; color: rgba(255,255,255,0.5); }

/* ── MOBILE MENU ─────────────────────────────────────────── */
#mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: var(--surface); padding: 24px;
  flex-direction: column; gap: 0;
}
#mobile-menu.open { display: flex; }
.mobile-menu-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.mobile-menu-close  { font-size: 1.5rem; cursor: pointer; background: none; border: none; color: var(--text); }
.mobile-nav-links   { list-style: none; display: flex; flex-direction: column; gap: 0; }
.mobile-nav-links li a {
  display: block; padding: 16px 0; font-size: 1.2rem; font-weight: 600;
  color: var(--text); border-bottom: 1px solid var(--border);
}
.mobile-nav-cta { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; }

/* ── SCROLL TO TOP ───────────────────────────────────────── */
#scroll-top {
  position: fixed; bottom: 32px; right: 32px;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--primary); color: #fff;
  border: none; cursor: pointer; font-size: 1.2rem;
  box-shadow: var(--shadow); opacity: 0; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
#scroll-top.visible { opacity: 1; }
#scroll-top:hover { background: var(--primary-lt); transform: translateY(-3px); }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-video-wrap { max-width: 600px; margin: 0 auto; }
  .newsletter-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero-inner { text-align: center; }
  .hero-content p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .research-article { grid-template-columns: 1fr; gap: 12px; }
  .research-date-block { display: flex; gap: 6px; align-items: baseline; }
  .event-card { grid-template-columns: 60px 1fr; gap: 16px; }
  .event-actions { flex-direction: row; align-items: center; grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats-inner { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  .btn { padding: 12px 20px; font-size: 0.9rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .newsletter-form-box { padding: 28px 20px; }
  #scroll-top { bottom: 20px; right: 20px; }
}