/* =============================
   COSMOS — Premium Futuristic UI
   ============================= */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Rajdhani:wght@300;400;500;600&family=Share+Tech+Mono&display=swap');

/* ── Variables ── */
:root {
  --black:    #02040a;
  --deep:     #060b14;
  --panel:    #0a1120;
  --border:   rgba(0, 200, 255, 0.18);
  --cyan:     #00c8ff;
  --cyan-dim: rgba(0, 200, 255, 0.5);
  --cyan-glow: rgba(0, 200, 255, 0.12);
  --white:    #e8f4ff;
  --muted:    #5a7a99;
  --accent:   #7b4fff;
  --accent2:  #ff4f8b;
  --gold:     #f0c040;
  --font-display: 'Orbitron', sans-serif;
  --font-body:    'Rajdhani', sans-serif;
  --font-mono:    'Share Tech Mono', monospace;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--black);
  color: var(--white);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.7;
  font-size: 17px;
  font-weight: 400;
}

/* ── Starfield Canvas ── */
#stars-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ── Scan-line overlay ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.04) 2px,
    rgba(0,0,0,0.04) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── All content above canvas ── */
nav, main, section, footer, .hero, .grid, .page-wrap {
  position: relative;
  z-index: 1;
}

/* ══════════════════════════════
   NAVIGATION
══════════════════════════════ */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
  height: 68px;
  background: rgba(2, 4, 10, 0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav::before {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.6;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0.35em;
  color: var(--white);
  text-shadow: 0 0 20px var(--cyan-dim), 0 0 40px rgba(0,200,255,0.2);
  cursor: default;
}

.nav__logo span {
  color: var(--cyan);
}

.nav__links {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav__link {
  font-family: var(--font-display);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s, text-shadow 0.25s, background 0.25s;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 6px; left: 50%; right: 50%;
  height: 1px;
  background: var(--cyan);
  transition: left 0.3s, right 0.3s;
  box-shadow: 0 0 6px var(--cyan);
}

.nav__link:hover,
.nav__link.active {
  color: var(--cyan);
  text-shadow: 0 0 14px var(--cyan-dim);
}

.nav__link:hover::after,
.nav__link.active::after {
  left: 16px;
  right: 16px;
}

.nav__back {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 8px 20px;
  border: 1px solid var(--border);
  transition: all 0.25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav__back::before {
  content: '←';
  font-size: 0.8rem;
  transition: transform 0.2s;
}

.nav__back:hover {
  color: var(--cyan);
  border-color: var(--cyan-dim);
  background: var(--cyan-glow);
  text-shadow: 0 0 10px var(--cyan-dim);
}

.nav__back:hover::before {
  transform: translateX(-3px);
}

/* ══════════════════════════════
   HERO
══════════════════════════════ */
.hero {
  text-align: center;
  padding: 130px 24px 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(0,200,255,0.07) 0%, transparent 65%);
  pointer-events: none;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
  display: block;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--white);
  text-shadow:
    0 0 40px rgba(0,200,255,0.3),
    0 0 80px rgba(0,200,255,0.1);
  opacity: 0;
  animation: fadeUp 0.9s 0.4s forwards;
  margin-bottom: 28px;
}

.hero__title .accent {
  color: var(--cyan);
  text-shadow:
    0 0 30px var(--cyan),
    0 0 60px rgba(0,200,255,0.4);
}

.hero__sub {
  font-size: 1.1rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.06em;
  max-width: 560px;
  margin: 0 auto 44px;
  opacity: 0;
  animation: fadeUp 0.9s 0.6s forwards;
  line-height: 1.8;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  opacity: 0;
  animation: fadeUp 0.9s 0.8s forwards;
  flex-wrap: wrap;
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--cyan);
  display: block;
  text-shadow: 0 0 16px var(--cyan-dim);
}

.hero__stat-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  color: var(--muted);
  text-transform: uppercase;
  display: block;
  margin-top: 4px;
}

/* ══════════════════════════════
   SECTION / ARTICLE CONTENT
══════════════════════════════ */
.section {
  padding: 80px 40px;
  max-width: 860px;
  margin: 0 auto;
}

.section__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.35em;
  color: var(--cyan);
  text-transform: uppercase;
  display: block;
  margin-bottom: 14px;
}

.section h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  text-shadow: 0 0 30px rgba(0,200,255,0.2);
  margin-bottom: 40px;
  line-height: 1.1;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 20px;
  margin-top: 60px;
}

.section h2:first-child { margin-top: 0; }

.section p {
  color: #8aaabf;
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.85;
  margin-bottom: 22px;
}

.section ul {
  list-style: none;
  margin: 0 0 28px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section ul li {
  font-size: 1rem;
  color: #8aaabf;
  padding: 12px 20px;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, var(--cyan-glow), transparent);
  letter-spacing: 0.03em;
  transition: background 0.2s, border-color 0.2s;
}

.section ul li:hover {
  background: linear-gradient(90deg, rgba(0,200,255,0.18), transparent);
  color: var(--white);
}

.section ul li strong {
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.85em;
  letter-spacing: 0.08em;
}

/* Divider line */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 60px 0;
  position: relative;
}

.divider::after {
  content: '◆';
  position: absolute;
  top: -10px; left: 50%; transform: translateX(-50%);
  color: var(--cyan);
  font-size: 0.7rem;
  background: var(--black);
  padding: 0 10px;
  opacity: 0.7;
}

/* ══════════════════════════════
   CARDS GRID
══════════════════════════════ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2px;
  padding: 0 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  position: relative;
  padding: 36px 32px;
  background: var(--panel);
  text-decoration: none;
  color: var(--white);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
  display: block;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--cyan-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.35s;
}

.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  transform: scaleX(0);
  transition: transform 0.4s;
}

.card:hover {
  border-color: var(--cyan-dim);
  transform: translateY(-4px);
}

.card:hover::before { opacity: 1; }
.card:hover::after  { transform: scaleX(1); }

.card__icon {
  font-size: 2rem;
  margin-bottom: 20px;
  display: block;
  filter: grayscale(0.3);
}

.card__num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--cyan);
  opacity: 0.7;
  display: block;
  margin-bottom: 12px;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 14px;
}

.card p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 400;
}

.card__arrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  display: block;
  margin-top: 24px;
  letter-spacing: 0.2em;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.3s, transform 0.3s;
}

.card:hover .card__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ══════════════════════════════
   DATA PANEL
══════════════════════════════ */
.data-panel {
  margin: 0 40px 80px;
  max-width: 820px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 36px 40px;
  position: relative;
}

.data-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--accent), var(--accent2));
}

.data-panel__label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.35em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.data-panel__label::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan);
  animation: blink 2s infinite;
}

.data-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  gap: 20px;
}

.data-row:last-child { border-bottom: none; }

.data-row__key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  flex: 0 0 auto;
}

.data-row__bar {
  flex: 1;
  height: 2px;
  background: rgba(255,255,255,0.05);
  position: relative;
}

.data-row__fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--cyan), var(--accent));
  box-shadow: 0 0 8px var(--cyan-dim);
  transition: width 1.5s cubic-bezier(0.4,0,0.2,1);
}

.data-row__val {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--white);
  flex: 0 0 auto;
  text-align: right;
}

/* ══════════════════════════════
   PAGE HERO (sub-pages)
══════════════════════════════ */
.page-hero {
  padding: 70px 40px 50px;
  position: relative;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  max-width: 860px;
  margin: 0 auto;
}

.page-hero::before {
  content: attr(data-title);
  position: absolute;
  right: -20px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 900;
  color: rgba(255,255,255,0.025);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
}

.page-hero__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--cyan);
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp 0.7s 0.1s forwards;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  text-shadow: 0 0 40px rgba(0,200,255,0.2);
  line-height: 1.05;
  opacity: 0;
  animation: fadeUp 0.8s 0.25s forwards;
}

.page-hero p {
  font-size: 1rem;
  color: var(--muted);
  margin-top: 18px;
  max-width: 540px;
  line-height: 1.8;
  font-weight: 400;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}

/* ══════════════════════════════
   FOOTER
══════════════════════════════ */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 60px;
  flex-wrap: wrap;
  gap: 12px;
}

footer .footer__brand {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-dim);
}

footer .footer__copy {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ══════════════════════════════
   ANIMATIONS
══════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.2; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px var(--cyan-dim); }
  50%       { box-shadow: 0 0 30px var(--cyan); }
}

@keyframes shimmer {
  0%   { left: -100%; }
  100% { left: 200%; }
}

/* ══════════════════════════════
   RESPONSIVE
══════════════════════════════ */
@media (max-width: 768px) {
  .nav { padding: 0 20px; }
  .hero { padding: 90px 20px 70px; }
  .hero__stats { gap: 30px; }
  .section { padding: 60px 24px; }
  .grid { padding: 0 20px 60px; }
  .data-panel { margin: 0 20px 60px; padding: 28px 24px; }
  footer { padding: 24px 20px; }
  .page-hero { padding: 50px 24px 40px; }
  .page-hero::before { display: none; }
}