/* NouLabs - Modern CSS from scratch */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --accent: #f59e0b;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0f172a;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.04);
  --shadow-lg: 0 4px 6px rgba(0,0,0,.06), 0 10px 40px rgba(0,0,0,.08);
  --transition: .25s ease;
  --max-w: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--text);
}
.logo span { color: var(--primary); }

.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a { color: var(--text-light); font-size: .9rem; font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 24px; height: 24px; stroke: var(--text); }

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1e3a5f 100%);
  color: #fff;
  padding: 100px 0 80px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  max-width: 800px;
  margin: 0 auto 20px;
  letter-spacing: -.02em;
}
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,.75);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,.35); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.3); }
.btn-outline:hover { border-color: #fff; color: #fff; }
.btn-sm { padding: 8px 18px; font-size: .85rem; }
.btn-dark { background: var(--text); color: #fff; }
.btn-dark:hover { background: #334155; color: #fff; }

/* ── FEATURES ── */
.features {
  padding: 80px 0;
  background: var(--bg-alt);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.feature-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-light); font-size: .95rem; }

/* ── SECTION HEADERS ── */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -.02em;
}
.section-header p { color: var(--text-light); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

/* ── APP CARDS ── */
.apps { padding: 80px 0; }
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.app-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.app-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.app-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.app-card-body { padding: 24px; }
.app-card-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.app-card-body p { color: var(--text-light); font-size: .9rem; margin-bottom: 18px; line-height: 1.6; }
.app-card-links { display: flex; gap: 8px; flex-wrap: wrap; }

/* ── LEGAL PAGES ── */
.page-content {
  padding: 60px 0 80px;
}
.page-content .container { max-width: 840px; }
.page-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -.02em;
}
.page-content .page-date {
  color: var(--text-light);
  font-size: .9rem;
  margin-bottom: 40px;
}
.page-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 36px 0 12px;
  color: var(--text);
}
.page-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 24px 0 10px;
}
.page-content p { margin-bottom: 14px; color: var(--text); font-size: .95rem; }
.page-content ul { margin: 10px 0 18px 24px; }
.page-content li { margin-bottom: 8px; color: var(--text); font-size: .95rem; }
.page-content a { color: var(--primary); text-decoration: underline; }

/* ── GUIDE PAGES ── */
.guide-hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1e3a5f 100%);
  color: #fff;
  padding: 60px 0 50px;
  text-align: center;
}
.guide-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.guide-hero p { color: rgba(255,255,255,.75); font-size: 1.05rem; }

.guide-content { padding: 60px 0 80px; }
.guide-content .container { max-width: 840px; }
.guide-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-light);
}
.guide-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 28px 0 12px;
}
.guide-content p { margin-bottom: 14px; font-size: .95rem; }
.guide-content ul, .guide-content ol { margin: 10px 0 18px 24px; }
.guide-content li { margin-bottom: 8px; font-size: .95rem; line-height: 1.6; }
.guide-content img {
  border-radius: var(--radius);
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.guide-content .tip-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px;
  margin: 24px 0;
}
.guide-content .tip-box p { margin: 0; }

.guide-app-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 24px 0;
}

/* ── FOOTER ── */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer h3 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-brand .logo { color: #fff; }
.footer-brand p { margin-top: 12px; font-size: .9rem; line-height: 1.7; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 10px; }
.footer a { color: rgba(255,255,255,.6); font-size: .9rem; }
.footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .85rem;
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-social { display: flex; gap: 16px; }
.footer-social a { font-size: 1.1rem; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .apps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 12px;
    box-shadow: var(--shadow-lg);
  }
  .hero { padding: 64px 0 56px; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: center; }
}