/* ============================================
   SECTIONS — All Section Styles
   ============================================ */

/* ── NAVIGATION ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-nav);
  padding: var(--space-md) 0;
  transition: background var(--duration-normal) var(--ease-out),
              padding var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-tight);
  color: var(--text-primary);
  transition: opacity var(--duration-fast) ease;
}

.nav-logo:hover { opacity: 0.7; }

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

.nav-link {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--duration-fast) ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text-primary);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover,
.nav-link.active { color: var(--text-primary); }

.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-wide);
  color: var(--text-secondary);
  padding: 6px 14px;
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) ease;
  text-transform: uppercase;
}

.lang-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent-border-hover);
  background: var(--accent-glow);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text-primary);
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }

.nav-mobile {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100vh;
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(30px);
  z-index: calc(var(--z-nav) - 1);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-slow) var(--ease-out), visibility var(--duration-slow) var(--ease-out);
}

.nav-mobile.open { opacity: 1; visibility: visible; }
.nav-mobile .nav-link { font-size: var(--fs-h3); letter-spacing: var(--ls-wider); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg { position: absolute; inset: 0; z-index: var(--z-behind); }

.hero-gradient {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  filter: blur(150px);
  opacity: 0.07;
  background: white;
  top: 10%; right: -10%;
  animation: heroFloat 12s ease-in-out infinite;
}

.hero-gradient-2 {
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.04;
  background: white;
  bottom: 10%; left: -5%;
  animation: heroFloat 15s ease-in-out infinite reverse;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: var(--z-normal);
  max-width: 850px;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0;
}

.hero-label .dot {
  width: 6px; height: 6px;
  background: var(--text-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-name {
  font-family: var(--font-heading);
  font-size: var(--fs-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.hero-name .line { display: block; overflow: hidden; }
.hero-name .line-inner { display: block; transform: translateY(110%); }

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: var(--fw-light);
  color: var(--text-secondary);
  letter-spacing: var(--ls-wide);
  margin-bottom: var(--space-md);
  opacity: 0;
}

.hero-tagline {
  font-size: var(--fs-body);
  color: var(--text-muted);
  max-width: 550px;
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-xl);
  opacity: 0;
}

.hero-cta { display: flex; gap: var(--space-md); flex-wrap: wrap; opacity: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--text-primary);
}

.btn-primary:hover { background: transparent; color: var(--text-primary); }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--accent-border);
}

.btn-secondary:hover { border-color: var(--text-primary); background: var(--accent-glow); }

.btn-cv {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--accent-border);
  gap: 8px;
}

.btn-cv svg {
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn-cv:hover {
  border-color: var(--text-primary);
  background: var(--accent-glow);
}

.btn-cv:hover svg {
  transform: translateY(3px);
  animation: downloadBounce 0.6s ease-in-out infinite;
}

@keyframes downloadBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(3px); }
}

.btn .btn-arrow { transition: transform var(--duration-fast) var(--ease-out); font-size: 1.1em; }
.btn:hover .btn-arrow { transform: translateX(4px); }

.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0;
}

.hero-scroll-text {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-lr;
}

.hero-scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}