/* =========================
   1. ROOT DESIGN TOKENS
========================= */
:root {
  --bg: #020617;
  --bg-soft: #0f172a;
  --surface: #111827;
  --surface-2: #1e293b;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.1);

  --text: #f8fafc;
  --text-soft: #cbd5e1;
  --text-muted: #94a3b8;

  --primary: #10b981;
  --primary-dark: #059669;
  --primary-soft: rgba(16, 185, 129, 0.12);

  --white: #ffffff;
  --black: #000000;
  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #22c55e;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.18);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.22);
  --shadow-lg: 0 18px 45px rgba(0, 0, 0, 0.28);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  --container: 1200px;
  --transition: 0.25s ease;
}

/* =========================
   2. RESET / BASE
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button,
input,
select,
textarea {
  font: inherit;
}

/* =========================
   3. TYPOGRAPHY
========================= */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--white);
}

h1 {
  font-size: clamp(2.2rem, 4vw, 4rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

h3 {
  font-size: 1.35rem;
}

p {
  color: var(--text-soft);
}

.section-title {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.section-heading {
  margin-bottom: var(--space-4);
}

.section-subtext {
  max-width: 700px;
  color: var(--text-muted);
}

/* =========================
   4. LAYOUT
========================= */
.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.section {
  padding: var(--space-16) 0;
}

.section-sm {
  padding: var(--space-12) 0;
}

.section-lg {
  padding: var(--space-20) 0;
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.flex {
  display: flex;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* =========================
   5. NAVBAR / HEADER
========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(2, 6, 23, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.navbar {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.nav-links a {
  color: var(--text-soft);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

/* =========================
   6. HERO
========================= */
.hero {
  padding: var(--space-20) 0 var(--space-16);
  background:
    radial-gradient(circle at top right, rgba(16,185,129,0.18), transparent 25%),
    linear-gradient(135deg, #111827 0%, #0f172a 55%, #065f46 100%);
  color: var(--white);
}

.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-8);
  align-items: center;
}

.hero p {
  max-width: 620px;
  font-size: 1.05rem;
  color: #dbeafe;
  margin-top: var(--space-4);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.hero-card,
.glass {
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.hero-card {
  padding: var(--space-8);
}

/* =========================
   7. CARDS
========================= */
.card {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card-soft {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  backdrop-filter: blur(8px);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-card {
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.08);
}

.stat-card h3 {
  font-size: 2rem;
  margin-bottom: var(--space-2);
}

.stat-card p {
  color: var(--text-muted);
}

/* =========================
   8. BUTTONS
========================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 10px 25px rgba(16,185,129,0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.16);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
}

.btn-light {
  background: var(--white);
  color: #0f172a;
}

.btn-light:hover {
  opacity: 0.95;
}

/* =========================
   9. FORMS
========================= */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.form-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-soft);
}

.form-control {
  width: 100%;
  min-height: 48px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--white);
  padding: 12px 14px;
  outline: none;
  transition: var(--transition);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(16,185,129,0.12);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* =========================
   10. BADGES / TAGS
========================= */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
}

/* =========================
   11. TABLES
========================= */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.08);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
}

.table th,
.table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.table th {
  color: var(--white);
  font-size: 0.9rem;
}

.table td {
  color: var(--text-soft);
}

/* =========================
   12. FOOTER
========================= */
.site-footer {
  padding: var(--space-12) 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: #01040c;
}

.footer-link {
  color: #d1d5db;
}

.footer-link:hover {
  color: var(--white);
}

/* =========================
   13. UTILITIES
========================= */
.text-center { text-align: center; }
.text-white { color: var(--white); }
.text-soft { color: var(--text-soft); }
.text-muted { color: var(--text-muted); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

.border-soft {
  border: 1px solid rgba(255,255,255,0.08);
}

/* =========================
   14. RESPONSIVE
========================= */
@media (max-width: 992px) {
  .hero-content,
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: var(--space-4);
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-12) 0;
  }

  .section-lg {
    padding: var(--space-16) 0;
  }

  .hero {
    padding: var(--space-16) 0 var(--space-12);
  }

  .navbar {
    min-height: 68px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}