/* ══════════════════════════════════════════
   ELON MUSK PORTFOLIO — style.css
   Aesthetic: Dark brutalist · Space-industrial
   Fonts: Bebas Neue (display) + Space Mono (code) + Barlow (body)
══════════════════════════════════════════ */

/* ── VARIABLES ── */
:root {
  --bg:         #080a0e;
  --bg2:        #0d1117;
  --surface:    #111620;
  --border:     #1e2740;
  --accent:     #e8f41a;        /* electric yellow-green */
  --accent2:    #3df5f0;        /* cyan */
  --text:       #d4dce8;
  --text-dim:   #5a6880;
  --white:      #ffffff;

  --font-display: 'Bebas Neue', sans-serif;
  --font-mono:    'Space Mono', monospace;
  --font-body:    'Barlow', sans-serif;

  --radius:    4px;
  --transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  cursor: none;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ── NOISE OVERLAY ── */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px;
}

/* ── CUSTOM CURSOR ── */
.cursor {
  position: fixed;
  width: 36px; height: 36px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1000;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, opacity 0.2s;
}
.cursor-dot {
  position: fixed;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1000;
  transform: translate(-50%, -50%);
}
body:has(a:hover) .cursor,
body:has(.btn:hover) .cursor {
  width: 56px; height: 56px;
  background: rgba(232,244,26,0.08);
}

/* ── SCROLL REVEAL ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--transition), transform 0.7s var(--transition);
}
[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════════
   NAV
══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 48px;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(8,10,14,0.7);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--accent);
  letter-spacing: 4px;
}
.nav__links {
  list-style: none;
  display: flex;
  gap: 36px;
}
.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--accent); }

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 48px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 50%, rgba(232,244,26,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(61,245,240,0.03) 0%, transparent 60%),
    var(--bg);
}

/* animated grid lines */
.hero__grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: gridPan 20s linear infinite;
}
@keyframes gridPan {
  0%   { background-position: 0 0; }
  100% { background-position: 80px 80px; }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 4px;
  color: var(--accent2);
  margin-bottom: 16px;
}
.hero__name {
  font-family: var(--font-display);
  font-size: clamp(5rem, 14vw, 11rem);
  line-height: 0.9;
  letter-spacing: 6px;
  color: var(--white);
  display: block;
  margin-bottom: 28px;
}
.hero__name--accent { color: var(--accent); }

.hero__sub {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text-dim);
  max-width: 500px;
  line-height: 1.8;
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
}
.btn:hover {
  background: var(--accent);
  color: var(--bg);
}

.hero__scroll-hint {
  position: absolute;
  bottom: 32px;
  right: 48px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 4px;
  color: var(--text-dim);
  writing-mode: vertical-rl;
  animation: pulseOpacity 2s ease-in-out infinite;
}
@keyframes pulseOpacity {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

/* ══════════════════════════════════════════
   SECTION COMMONS
══════════════════════════════════════════ */
section {
  padding: 100px 48px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  letter-spacing: 4px;
  color: var(--white);
  margin-bottom: 12px;
}
.section-sub {
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 60px;
}

/* ══════════════════════════════════════════
   VENTURES
══════════════════════════════════════════ */
.ventures {
  background: var(--bg2);
}

.ventures__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.venture-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.venture-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.venture-card:hover {
  border-color: rgba(232,244,26,0.3);
  transform: translateY(-4px);
}
.venture-card:hover::before { transform: scaleX(1); }

.venture-card__icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}
.venture-card__year {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent2);
  letter-spacing: 3px;
  margin-bottom: 8px;
}
.venture-card h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 2px;
  color: var(--white);
  margin-bottom: 10px;
}
.venture-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 20px;
}
.venture-card__tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 10px;
  border-radius: 2px;
}

/* ══════════════════════════════════════════
   TIMELINE
══════════════════════════════════════════ */
.timeline-section {
  background: var(--bg);
}

.timeline {
  position: relative;
  max-width: 700px;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2), transparent);
}

.timeline__item {
  position: relative;
  margin-bottom: 52px;
}
.timeline__dot {
  position: absolute;
  left: -44px;
  top: 6px;
  width: 10px; height: 10px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
  transition: background var(--transition);
}
.timeline__item:hover .timeline__dot { background: var(--accent); }

.timeline__year {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 3px;
  margin-bottom: 6px;
}
.timeline__content h4 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 2px;
  color: var(--white);
  margin-bottom: 6px;
}
.timeline__content p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ══════════════════════════════════════════
   NUMBERS
══════════════════════════════════════════ */
.numbers {
  background: var(--bg2);
  text-align: center;
}

.numbers__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-top: 60px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 40px 24px;
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.stat-card:hover { border-color: rgba(61,245,240,0.3); }

.stat-card__num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.5rem);
  color: var(--accent);
  letter-spacing: 2px;
  line-height: 1;
}
.stat-card__unit {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent2);
  vertical-align: super;
}
.stat-card p {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 10px;
}

/* ══════════════════════════════════════════
   QUOTES
══════════════════════════════════════════ */
.quotes {
  background: var(--bg);
  text-align: center;
}

.quotes__slider {
  position: relative;
  max-width: 800px;
  margin: 0 auto 40px;
  min-height: 140px;
}

.quote-card {
  display: none;
  animation: fadeSlide 0.5s ease forwards;
}
.quote-card.active { display: block; }

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.quote-card p {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1.75;
  position: relative;
  padding: 0 20px;
}
.quote-card p::before {
  content: '"';
  font-family: var(--font-display);
  font-size: 6rem;
  color: var(--accent);
  position: absolute;
  left: -10px;
  top: -20px;
  line-height: 1;
  opacity: 0.3;
}

.quotes__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.quotes__btn {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text);
  font-size: 1.2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  cursor: none;
  transition: border-color var(--transition), color var(--transition);
}
.quotes__btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.quotes__dots {
  display: flex;
  gap: 8px;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background var(--transition);
}
.dot.active { background: var(--accent); }

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 48px;
}
.footer p {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.footer__note strong { color: var(--accent2); }
.footer__credit strong { color: var(--accent); }

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .nav__links { display: none; }
  section { padding: 72px 24px; }
  .hero { padding: 0 24px; }
  .hero__scroll-hint { display: none; }
  .timeline { padding-left: 28px; }
  .timeline__dot { left: -32px; }
  .footer { padding: 32px 24px; }
}