/* ============================================================
   NexTerra Academia — NTAcademia.org
   Main Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  --clr-primary: #0f3d5c;
  --clr-primary-light: #1a5f8a;
  --clr-primary-dark: #092a3e;
  --clr-accent: #2e97c1;
  --clr-accent-light: #e8f4fa;
  --clr-gold: #c9963b;
  --clr-gold-light: #f5eedf;
  --clr-white: #ffffff;
  --clr-off-white: #f7f8fa;
  --clr-light-gray: #eef0f3;
  --clr-mid-gray: #8a919c;
  --clr-dark-gray: #4a5260;
  --clr-text: #2c3240;
  --clr-text-light: #5a6172;
  --clr-border: #dde1e7;
  --clr-success: #2a9d6e;
  --clr-danger: #c0392b;
  --font-display: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 3px rgba(15,61,92,0.06);
  --shadow-md: 0 4px 16px rgba(15,61,92,0.08);
  --shadow-lg: 0 8px 32px rgba(15,61,92,0.10);
  --shadow-xl: 0 16px 48px rgba(15,61,92,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--clr-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--clr-primary); }

h1, h2, h3, h4 { font-family: var(--font-display); color: var(--clr-primary); line-height: 1.25; font-weight: 400; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1rem; }

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

/* --- Topbar --- */
.topbar {
  background: var(--clr-primary-dark);
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
  padding: 0.45rem 0;
  letter-spacing: 0.02em;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.topbar a { color: rgba(255,255,255,0.85); }
.topbar a:hover { color: var(--clr-white); }
.topbar-social { display: flex; gap: 1rem; }

/* --- Header / Navbar --- */
.header {
  background: var(--clr-white);
  border-bottom: 1px solid var(--clr-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }
.header .container { display: flex; align-items: center; justify-content: space-between; padding-top: 0; padding-bottom: 0; }
.logo { display: flex; align-items: center; gap: 0.75rem; padding: 0.85rem 0; text-decoration: none; }
.logo-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-white); font-family: var(--font-display); font-size: 1.2rem; font-weight: 700;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-name { font-family: var(--font-display); font-size: 1.2rem; color: var(--clr-primary); }
.logo-tag { font-size: 0.65rem; color: var(--clr-mid-gray); letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500; }

.nav { display: flex; align-items: center; }
.nav-list { display: flex; list-style: none; gap: 0; }
.nav-list li { position: relative; }
.nav-list a {
  display: block; padding: 1.1rem 1rem; font-size: 0.88rem; font-weight: 500;
  color: var(--clr-dark-gray); letter-spacing: 0.01em; transition: color var(--transition);
  position: relative;
}
.nav-list a::after {
  content: ''; position: absolute; bottom: 0; left: 1rem; right: 1rem; height: 2.5px;
  background: var(--clr-accent); transform: scaleX(0); transition: transform var(--transition);
  border-radius: 2px;
}
.nav-list a:hover, .nav-list a.active { color: var(--clr-primary); }
.nav-list a:hover::after, .nav-list a.active::after { transform: scaleX(1); }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a::before {
  content: ''; display: inline-block; width: 0; height: 0; margin-left: 5px;
  border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 4px solid currentColor;
  vertical-align: middle; transition: transform var(--transition);
}
.dropdown-menu {
  position: absolute; top: 100%; left: 0; min-width: 220px;
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all var(--transition); padding: 0.5rem 0; z-index: 100;
}
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a {
  padding: 0.6rem 1.25rem; font-size: 0.85rem; display: block;
}
.dropdown-menu a::after { display: none; }
.dropdown-menu a:hover { background: var(--clr-accent-light); color: var(--clr-primary); }

/* Hamburger */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--clr-primary); margin: 5px 0; transition: var(--transition); border-radius: 2px; }

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 50%, var(--clr-primary-light) 100%);
  color: var(--clr-white);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-home { padding: 6rem 0 5rem; }
.hero-inner { padding: 3.5rem 0 3rem; }
.hero-content { position: relative; z-index: 1; }
.hero h1 { color: var(--clr-white); margin-bottom: 1rem; }
.hero .subtitle {
  font-family: var(--font-display); font-style: italic; font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: rgba(255,255,255,0.8); margin-bottom: 1.5rem;
}
.hero p { color: rgba(255,255,255,0.85); font-size: 1.05rem; max-width: 680px; margin-bottom: 2rem; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50px; padding: 0.4rem 1.2rem 0.4rem 0.6rem;
  font-size: 0.82rem; color: rgba(255,255,255,0.9); margin-bottom: 1.5rem;
  backdrop-filter: blur(4px);
}
.hero-badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--clr-gold); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* Page hero (inner pages) */
.page-hero h1 { margin-bottom: 0.5rem; }
.page-hero .breadcrumb {
  font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 1rem;
}
.page-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
.page-hero .breadcrumb a:hover { color: var(--clr-white); }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem; border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; border: none; transition: all var(--transition);
  text-decoration: none; letter-spacing: 0.01em;
}
.btn-primary { background: var(--clr-accent); color: var(--clr-white); }
.btn-primary:hover { background: var(--clr-primary-light); color: var(--clr-white); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--clr-white); border: 1.5px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); color: var(--clr-white); border-color: rgba(255,255,255,0.7); }
.btn-gold { background: var(--clr-gold); color: var(--clr-white); }
.btn-gold:hover { background: #b8862f; color: var(--clr-white); transform: translateY(-1px); }
.btn-sm { padding: 0.55rem 1.25rem; font-size: 0.82rem; }
.btn-group { display: flex; gap: 1rem; flex-wrap: wrap; }

/* --- Sections --- */
.section { padding: 5rem 0; }
.section-alt { background: var(--clr-off-white); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 3rem; }
.section-header h2 { margin-bottom: 0.75rem; }
.section-header p { color: var(--clr-text-light); font-size: 1.05rem; }
.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--clr-accent); margin-bottom: 0.75rem;
}

/* --- Stats Bar --- */
.stats-bar {
  background: var(--clr-white); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 2rem 2.5rem;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem; margin-top: -3rem; position: relative; z-index: 10;
}
.stat-item { text-align: center; }
.stat-number { font-family: var(--font-display); font-size: 2.2rem; color: var(--clr-primary); line-height: 1; margin-bottom: 0.3rem; }
.stat-label { font-size: 0.8rem; color: var(--clr-mid-gray); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }

/* --- Feature Cards --- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.feature-card {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 2rem 1.75rem;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-primary));
  transform: scaleX(0); transition: transform var(--transition); transform-origin: left;
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: var(--clr-accent-light); display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem; font-size: 1.5rem;
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 0.6rem; }
.feature-card p { color: var(--clr-text-light); font-size: 0.92rem; margin: 0; }

/* --- Journal Card --- */
.journal-card {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.journal-card:hover { box-shadow: var(--shadow-lg); }
.journal-card-accent { height: 5px; background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent), var(--clr-gold)); }
.journal-card-body { padding: 2.5rem; }
.journal-card h3 { font-size: 1.6rem; margin-bottom: 0.5rem; }
.journal-card .journal-issn { font-size: 0.9rem; color: var(--clr-mid-gray); margin-bottom: 1.5rem; font-weight: 500; }
.journal-meta-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.journal-meta-item { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.9rem; }
.journal-meta-icon { color: var(--clr-accent); font-size: 1.1rem; flex-shrink: 0; margin-top: 0.1rem; }
.journal-meta-label { font-weight: 600; color: var(--clr-primary); display: block; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.journal-meta-value { color: var(--clr-text-light); }
.journal-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0; }
.journal-tag {
  background: var(--clr-accent-light); color: var(--clr-primary-light);
  padding: 0.3rem 0.8rem; border-radius: 50px; font-size: 0.78rem; font-weight: 600;
}
.journal-tag-gold { background: var(--clr-gold-light); color: var(--clr-gold); }

/* --- Content Pages --- */
.content-section { padding: 4rem 0; }
.content-layout { display: grid; grid-template-columns: 1fr 300px; gap: 3.5rem; }
.content-main h2 { margin-top: 2.5rem; margin-bottom: 1rem; font-size: 1.6rem; }
.content-main h2:first-child { margin-top: 0; }
.content-main h3 { margin-top: 2rem; margin-bottom: 0.75rem; }
.content-main p { color: var(--clr-text-light); line-height: 1.8; }
.content-main ul { list-style: none; padding: 0; margin: 1rem 0; }
.content-main ul li {
  padding: 0.5rem 0 0.5rem 1.75rem; position: relative;
  color: var(--clr-text-light); line-height: 1.7;
}
.content-main ul li::before {
  content: ''; position: absolute; left: 0; top: 0.95rem;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--clr-accent); opacity: 0.6;
}
.content-main ul li strong { color: var(--clr-text); font-weight: 600; }

/* Sidebar */
.content-sidebar { position: sticky; top: 100px; align-self: start; }
.sidebar-card {
  background: var(--clr-off-white); border-radius: var(--radius-md);
  padding: 1.5rem; margin-bottom: 1.5rem; border: 1px solid var(--clr-border);
}
.sidebar-card h4 {
  font-family: var(--font-body); font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--clr-mid-gray);
  margin-bottom: 1rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--clr-border);
}
.sidebar-card a {
  display: block; padding: 0.45rem 0; font-size: 0.9rem; color: var(--clr-text-light);
}
.sidebar-card a:hover { color: var(--clr-accent); }

.sidebar-highlight {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  color: var(--clr-white); border-radius: var(--radius-md); padding: 1.75rem; border: none;
}
.sidebar-highlight h4 { color: rgba(255,255,255,0.7); border-bottom-color: rgba(255,255,255,0.15); }
.sidebar-highlight p { color: rgba(255,255,255,0.85); font-size: 0.9rem; margin-bottom: 0.75rem; }
.sidebar-highlight .label-big { font-family: var(--font-display); font-size: 1.8rem; color: var(--clr-white); }

/* --- Info Boxes --- */
.info-box {
  background: var(--clr-accent-light); border-left: 4px solid var(--clr-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem; margin: 1.5rem 0;
}
.info-box p { margin: 0; color: var(--clr-primary); font-size: 0.95rem; }
.info-box-gold { background: var(--clr-gold-light); border-left-color: var(--clr-gold); }
.info-box-gold p { color: #6d5020; }

/* --- Values Grid --- */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.value-card {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 1.5rem; text-align: center;
  transition: all var(--transition);
}
.value-card:hover { border-color: var(--clr-accent); box-shadow: var(--shadow-sm); }
.value-icon { font-size: 1.8rem; margin-bottom: 0.75rem; }
.value-card h4 { font-size: 1rem; margin-bottom: 0.4rem; }
.value-card p { font-size: 0.85rem; color: var(--clr-text-light); margin: 0; }

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  color: var(--clr-white); text-align: center; padding: 4rem 0;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'%3E%3Cpath d='m0 40 40-40h-40z'/%3E%3C/g%3E%3C/svg%3E");
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: var(--clr-white); margin-bottom: 0.75rem; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 1.05rem; max-width: 600px; margin: 0 auto 2rem; }

/* --- Footer --- */
.footer {
  background: var(--clr-primary-dark); color: rgba(255,255,255,0.7);
  padding: 4rem 0 0; font-size: 0.9rem;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 3rem; }
.footer h4 {
  font-family: var(--font-body); font-weight: 700; font-size: 0.78rem;
  text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,0.4);
  margin-bottom: 1.25rem;
}
.footer p { color: rgba(255,255,255,0.6); font-size: 0.88rem; line-height: 1.7; }
.footer a { color: rgba(255,255,255,0.7); }
.footer a:hover { color: var(--clr-white); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { font-size: 0.88rem; }
.footer-brand { font-family: var(--font-display); font-size: 1.3rem; color: var(--clr-white); margin-bottom: 0.75rem; }
.footer-bottom {
  margin-top: 3rem; padding: 1.25rem 0; border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem;
  font-size: 0.8rem; color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }

/* --- Contact Form --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600; color: var(--clr-text);
  margin-bottom: 0.4rem;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm); font-family: var(--font-body); font-size: 0.92rem;
  color: var(--clr-text); transition: border-color var(--transition);
  background: var(--clr-white);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--clr-accent); box-shadow: 0 0 0 3px rgba(46,151,193,0.1);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.contact-info-card {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  border-radius: var(--radius-lg); padding: 2.5rem; color: var(--clr-white);
}
.contact-info-card h3 { color: var(--clr-white); margin-bottom: 1.5rem; }
.contact-item { display: flex; gap: 1rem; margin-bottom: 1.5rem; }
.contact-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.contact-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: rgba(255,255,255,0.5); font-weight: 600; }
.contact-value { color: var(--clr-white); font-size: 0.95rem; }
.contact-value a { color: var(--clr-white); }

/* --- Scope Tags --- */
.scope-grid { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1rem 0; }
.scope-tag {
  background: var(--clr-off-white); border: 1px solid var(--clr-border);
  padding: 0.45rem 1rem; border-radius: 50px; font-size: 0.85rem;
  color: var(--clr-text-light); font-weight: 500; transition: all var(--transition);
}
.scope-tag:hover { background: var(--clr-accent-light); border-color: var(--clr-accent); color: var(--clr-primary); }

/* --- Fade-in Animations --- */
.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .content-layout { grid-template-columns: 1fr; }
  .content-sidebar { position: static; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .journal-meta-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-list { 
    display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--clr-white); border-bottom: 1px solid var(--clr-border);
    box-shadow: var(--shadow-lg); padding: 0.5rem 0;
  }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 0.85rem 2rem; }
  .nav-list a::after { display: none; }
  .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding-left: 1rem; }
  .nav-toggle { display: block; }
  .features-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; padding: 1.5rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .content-sidebar { grid-template-columns: 1fr; }
  .topbar { display: none; }
  .hero-home { padding: 4rem 0 3.5rem; }
  .section { padding: 3.5rem 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .stats-bar { grid-template-columns: 1fr; margin-top: -2rem; }
  .btn-group { flex-direction: column; }
}