/* ============================================================
   GLOBAL — shared variables, reset, nav, footer, buttons
   ============================================================ */

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

:root {
  --bg:           #000000;
  --bg-card:      #0d0d0d;
  --bg-card-hover:#141414;
  --border:       rgba(0, 210, 255, 0.14);
  --border-glow:  rgba(0, 210, 255, 0.45);
  --cyan:         #00d2ff;
  --cyan-dim:     rgba(0, 210, 255, 0.7);
  --cyan-muted:   rgba(0, 210, 255, 0.1);
  --violet:       #7c3aed;
  --gold:         #f59e0b;
  --text-primary:   #e8edf5;
  --text-secondary: #94a3b8;
  --text-muted:     #4b6080;
  --font-display: 'Orbitron', sans-serif;
  --font-body:    'Outfit', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --radius:    18px;
  --radius-lg: 26px;
  --nav-h:     64px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb { background: rgba(0,210,255,0.3); border-radius: 4px; }

/* ── SHARED SECTION WRAPPER ── */
.page-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 3rem) 2rem 5rem;
}

/* ── SECTION LABEL ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border-glow), transparent);
}

/* ── PAGE TITLE ── */
h1.page-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 3rem;
  letter-spacing: -0.01em;
}

/* ── TECH CHIP ── */
.tech-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  background: rgba(0, 210, 255, 0.07);
  border: 1px solid rgba(0, 210, 255, 0.18);
  color: var(--cyan-dim);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 300;
  height: var(--nav-h);
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.12em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.05em;
  padding: 0.4rem 1rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover {
  color: var(--cyan);
  background: var(--cyan-muted);
}

.nav-links a.active {
  color: var(--cyan);
  background: var(--cyan-muted);
  border: 1px solid rgba(0,210,255,0.2);
}

/* ── HAMBURGER (mobile) ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: background 0.2s;
}
.nav-hamburger:hover span { background: var(--cyan); }

/* ── MOBILE MENU ── */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: #000000;
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1.5rem 1rem;
  flex-direction: column;
  gap: 0;
  z-index: 299;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.9);
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 1rem 1rem;
  border-radius: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  display: block;
  transition: color 0.2s, background 0.2s;
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover,
.nav-mobile a.active { color: var(--cyan); background: var(--cyan-muted); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--cyan);
  color: #000;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 18px rgba(0,210,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0,210,255,0.55);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border: 1px solid var(--border-glow);
  color: var(--cyan);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: 100px;
  text-decoration: none;
  background: var(--cyan-muted);
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.btn-ghost:hover {
  transform: translateY(-2px);
  background: rgba(0,210,255,0.18);
  box-shadow: 0 0 18px rgba(0,210,255,0.18);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border-radius: 8px;
  text-decoration: none;
  background: var(--bg-card);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.btn-icon:hover {
  border-color: var(--border-glow);
  color: var(--cyan);
  background: var(--cyan-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  text-align: center;
  padding: 2.5rem 2rem 2rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.footer-name {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.15em;
  margin-bottom: 0.4rem;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes revealUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
}
.reveal.visible {
  animation: revealUp 0.5s ease forwards;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .page-content { padding-top: calc(var(--nav-h) + 2rem); padding-left: 1.25rem; padding-right: 1.25rem; }
}