/* GSTNet Core Stylesheet — All Pages */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@600;700;900&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg:      #050d1a;
  --bg2:     #0a1628;
  --bg3:     #0f1e35;
  --panel:   #0d1a2e;
  --border:  rgba(0,168,255,0.15);
  --border2: rgba(0,168,255,0.30);
  --accent:  #00a8ff;
  --accent2: #0077cc;
  --green:   #00c87a;
  --red:     #ff3b5c;
  --yellow:  #ffa500;
  --text:    #e0eaf5;
  --muted:   #7a9bb5;
  --shadow:  0 20px 60px rgba(0,0,0,0.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

/* HEADER */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  background: rgba(5,13,26,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, #00538c, #003a6e);
  border: 1px solid var(--border2);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Orbitron', sans-serif;
  font-size: 14px; font-weight: 900;
  color: #00a8ff; letter-spacing: 1px;
}

.brand-text .name {
  font-family: 'Orbitron', sans-serif;
  font-size: 15px; font-weight: 700;
  background: linear-gradient(90deg, #fff, #00a8ff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
  display: block;
}

.brand-text .sub {
  font-size: 10px; color: var(--muted);
  letter-spacing: 2px; text-transform: uppercase;
}

nav {
  display: flex; align-items: center; gap: 4px;
  flex: 1; justify-content: center;
}

nav a {
  color: var(--muted); text-decoration: none;
  font-size: 13px; font-weight: 500;
  padding: 7px 12px; border-radius: 8px;
  transition: all 0.2s; letter-spacing: 0.3px;
}

nav a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
nav a.active { color: var(--accent); }

.header-actions {
  display: flex; align-items: center; gap: 10px;
  flex-shrink: 0;
}

/* LANGUAGE SELECTOR */
.lang-select {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text); font-size: 12px;
  padding: 6px 10px; border-radius: 8px;
  cursor: pointer; outline: none;
  max-width: 140px;
}

.lang-select option { background: var(--bg2); }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 7px; padding: 10px 18px;
  border-radius: 10px; font-weight: 600;
  font-size: 13px; text-decoration: none;
  cursor: pointer; border: none;
  transition: all 0.2s; white-space: nowrap;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 6px 24px rgba(0,168,255,0.25);
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: rgba(255,255,255,0.09); }

.btn-green {
  background: linear-gradient(90deg, #00c87a, #009960);
  color: #fff;
  box-shadow: 0 6px 24px rgba(0,200,122,0.25);
}
.btn-green:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: 12px; }
.btn-sm { padding: 7px 14px; font-size: 12px; }

/* SECTIONS */
main { padding-top: 72px; }
section { padding: 80px 0; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase; color: var(--accent);
  background: rgba(0,168,255,0.08);
  border: 1px solid rgba(0,168,255,0.20);
  padding: 5px 14px; border-radius: 999px;
  margin-bottom: 16px;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.4rem; font-weight: 700;
  line-height: 1.1; margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-sub {
  font-size: 1.05rem; color: var(--muted);
  max-width: 600px; line-height: 1.7;
  margin-bottom: 40px;
}

/* CARDS */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px; padding: 24px;
  transition: all 0.2s;
}
.card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.card-icon {
  width: 44px; height: 44px;
  background: rgba(0,168,255,0.10);
  border: 1px solid rgba(0,168,255,0.25);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 14px;
}

.card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.95rem; line-height: 1.6; }

/* GRID LAYOUTS */
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }

/* BADGE */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  padding: 3px 10px; border-radius: 999px;
}
.badge-green { background: rgba(0,200,122,0.12); border: 1px solid rgba(0,200,122,0.30); color: var(--green); }
.badge-blue  { background: rgba(0,168,255,0.12); border: 1px solid rgba(0,168,255,0.30); color: var(--accent); }
.badge-yellow{ background: rgba(255,165,0,0.12); border: 1px solid rgba(255,165,0,0.30); color: var(--yellow); }

/* FOOTER */
footer {
  background: #030812;
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 50px;
}

.footer-brand p { color: var(--muted); font-size: 0.9rem; line-height: 1.7; margin-top: 14px; max-width: 280px; }

.footer-col h4 {
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--text);
  margin-bottom: 16px;
}

.footer-col a {
  display: block; color: var(--muted); text-decoration: none;
  font-size: 13px; padding: 4px 0; transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}

.footer-bottom p { font-size: 12px; color: var(--muted); }
.footer-bottom .reg { color: var(--accent); }

/* MOBILE MENU */
.mobile-menu-btn {
  display: none;
  background: none; border: 1px solid var(--border);
  color: var(--text); padding: 8px 12px;
  border-radius: 8px; cursor: pointer; font-size: 16px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  header { padding: 0 16px; }
  nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .section-title { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.6s ease forwards; }
.fade-up-2 { animation: fadeUp 0.6s ease 0.15s forwards; opacity: 0; }
.fade-up-3 { animation: fadeUp 0.6s ease 0.3s forwards; opacity: 0; }

@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.pulse { animation: pulse 2s ease-in-out infinite; }

/* HERO GRADIENT BG */
.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 1000px 600px at 70% -10%, rgba(0,168,255,0.12), transparent 60%),
    radial-gradient(ellipse 800px 500px at 10% 20%, rgba(0,120,255,0.08), transparent 55%);
}

/* COMPARISON TABLE */
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th {
  background: var(--bg2); padding: 14px 16px;
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--muted);
  border: 1px solid var(--border); text-align: center;
}
.compare-table th.highlight {
  background: rgba(0,168,255,0.12);
  color: var(--accent); border-color: var(--border2);
}
.compare-table td {
  padding: 14px 16px; border: 1px solid var(--border);
  font-size: 14px; text-align: center; color: var(--muted);
}
.compare-table td:first-child { text-align: left; color: var(--text); font-weight: 500; }
.compare-table td.highlight { background: rgba(0,168,255,0.05); color: var(--text); }
.compare-table tr:hover td { background: rgba(255,255,255,0.02); }
.check { color: var(--green); font-size: 16px; }
.cross { color: var(--red); font-size: 16px; }
.partial { color: var(--yellow); font-size: 14px; }

/* STAT CARDS */
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px; padding: 24px;
  text-align: center;
}
.stat-card .num {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.4rem; font-weight: 700;
  background: linear-gradient(90deg, #fff, var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  display: block;
}
.stat-card .lbl { color: var(--muted); font-size: 13px; margin-top: 6px; }

/* TIMELINE */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ''; position: absolute; left: 8px; top: 0; bottom: 0;
  width: 2px; background: var(--border2);
}
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item::before {
  content: ''; position: absolute; left: -28px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg);
  box-shadow: 0 0 8px rgba(0,168,255,0.5);
}
.timeline-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.timeline-item p { color: var(--muted); font-size: 0.9rem; }

/* MOBILE NAV OVERLAY */
.mobile-nav {
  display: none; position: fixed; inset: 0; z-index: 9998;
  background: rgba(5,13,26,0.98);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 12px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text); text-decoration: none;
  font-size: 20px; font-weight: 600; padding: 12px 40px;
  border-radius: 12px; width: 260px; text-align: center;
  border: 1px solid var(--border); transition: all 0.2s;
}
.mobile-nav a:hover { background: rgba(0,168,255,0.1); color: var(--accent); }
.mobile-nav .close-btn {
  position: absolute; top: 24px; right: 24px;
  background: none; border: none; color: var(--muted);
  font-size: 28px; cursor: pointer;
}