/* ════════════════════════════════════════════════
   JUAN CONSTANTIN — Portfolio
   Fuentes: Bebas Neue (display), Outfit (body),
            JetBrains Mono (code)
   ════════════════════════════════════════════════ */

/* ── TOKENS ───────────────────────────────────── */
:root {
  /* Paleta dark (default) */
  --bg-0:        #070B14;
  --bg-1:        #0D1321;
  --bg-2:        #131B2E;
  --bg-3:        #1A2540;
  --bg-card:     #111827;
  --bg-card-hov: #162035;

  --blue:        #3B82F6;
  --blue-glow:   rgba(59, 130, 246, 0.18);
  --blue-dim:    rgba(59, 130, 246, 0.08);
  --cyan:        #06B6D4;
  --green:       #10B981;
  --green-dim:   rgba(16, 185, 129, 0.12);
  --amber:       #F59E0B;
  --amber-dim:   rgba(245, 158, 11, 0.12);
  --red:         #EF4444;
  --red-dim:     rgba(239, 68, 68, 0.1);

  --text-1:      #F1F5F9;
  --text-2:      #94A3B8;
  --text-muted:  #475569;
  --border:      rgba(59, 130, 246, 0.12);
  --border-hov:  rgba(59, 130, 246, 0.3);

  /* Tipografía */
  --font-display: 'Bebas Neue', 'Impact', sans-serif;
  --font-body:    'Outfit', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Espacio */
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 16px;
  --gap-lg: 32px;
  --gap-xl: 64px;
  --gap-2xl: 120px;

  /* Layout */
  --max-w: 1200px;
  --nav-h: 64px;

  /* Radios */
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;

  /* Transitions */
  --t-fast: 150ms ease;
  --t-base: 250ms ease;
  --t-slow: 400ms ease;
}

/* Light mode */
[data-theme="light"] {
  --bg-0:        #F8FAFC;
  --bg-1:        #FFFFFF;
  --bg-2:        #F1F5F9;
  --bg-3:        #E2E8F0;
  --bg-card:     #FFFFFF;
  --bg-card-hov: #F8FAFC;

  --blue-glow:   rgba(59, 130, 246, 0.12);
  --blue-dim:    rgba(59, 130, 246, 0.06);

  --text-1:      #0F172A;
  --text-2:      #475569;
  --text-muted:  #94A3B8;
  --border:      rgba(59, 130, 246, 0.15);
  --border-hov:  rgba(59, 130, 246, 0.35);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-1);
  background: var(--bg-0);
  min-height: 100vh;
  transition: background var(--t-slow), color var(--t-slow);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

/* ── LAYOUT HELPERS ───────────────────────────── */
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--gap-2xl) var(--gap-lg);
}

.section-header {
  margin-bottom: var(--gap-xl);
}

.section-num {
  display: block;
  margin-bottom: var(--gap-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--text-1);
}

.section-sub {
  margin-top: var(--gap-md);
  color: var(--text-2);
  font-size: 1.05rem;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── NAVBAR ───────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--t-base), border-color var(--t-base),
              backdrop-filter var(--t-base);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(248, 250, 252, 0.88);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--gap-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-lg);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-1);
  transition: color var(--t-fast);
}

.nav-logo:hover { color: var(--blue); }
.logo-bracket { color: var(--blue); }

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.04em;
  transition: color var(--t-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 100%;
  height: 1px;
  background: var(--blue);
  transition: right var(--t-base);
}

.nav-link:hover { color: var(--text-1); }
.nav-link:hover::after { right: 0; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}

.theme-toggle {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}

.theme-toggle:hover {
  background: var(--blue-dim);
  border-color: var(--blue);
  color: var(--blue);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
}

.menu-toggle span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--text-2);
  transition: transform var(--t-base), opacity var(--t-base);
}

/* ── HERO ─────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}

/* Dot grid background */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(59, 130, 246, 0.18) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  pointer-events: none;
}

/* Radial glow */
.hero-glow {
  position: absolute;
  top: -20%;
  left: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--gap-xl) var(--gap-lg);
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  margin-bottom: var(--gap-lg);
  color: var(--text-2);
}

.eyebrow-text {
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(5rem, 14vw, 13rem);
  line-height: 0.9;
  letter-spacing: 0.01em;
  color: var(--text-1);
  margin-bottom: var(--gap-lg);

  /* Subtle gradient on the text */
  background: linear-gradient(
    135deg,
    var(--text-1) 0%,
    rgba(241, 245, 249, 0.75) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  margin-bottom: var(--gap-lg);
  font-family: var(--font-mono);
  font-size: clamp(0.875rem, 2vw, 1.1rem);
  color: var(--blue);
}

.typed-text { min-height: 1.4em; }

.cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
  color: var(--blue);
  font-weight: 300;
}

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

.hero-desc {
  max-width: 540px;
  color: var(--text-2);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--gap-xl);
}

.hero-desc strong { color: var(--text-1); font-weight: 600; }

.hero-cta {
  display: flex;
  gap: var(--gap-md);
  flex-wrap: wrap;
  margin-bottom: var(--gap-xl);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: 12px 28px;
  border-radius: var(--r-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: all var(--t-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  border: 1px solid var(--blue);
  box-shadow: 0 0 20px var(--blue-glow);
}

.btn-primary:hover {
  background: #2563EB;
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.35);
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  padding: var(--gap-md) var(--gap-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  width: fit-content;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--blue);
  line-height: 1;
  letter-spacing: 0.05em;
}

.stat-label {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap-sm);
  color: var(--text-muted);
  transition: color var(--t-fast);
}

.scroll-indicator:hover { color: var(--blue); }

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--border), transparent);
  animation: scrollpulse 2s ease-in-out infinite;
}

@keyframes scrollpulse {
  0%, 100% { transform: scaleY(1); opacity: 0.5; }
  50%       { transform: scaleY(1.3); opacity: 1; }
}

.scroll-label { letter-spacing: 0.15em; }

/* ── ABOUT ────────────────────────────────────── */
.about { background: var(--bg-1); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-xl);
  align-items: start;
}

.about-p {
  color: var(--text-2);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--gap-md);
}

.about-p strong { color: var(--text-1); font-weight: 600; }
.about-p em     { color: var(--blue); font-style: normal; }

.about-badges {
  display: flex;
  gap: var(--gap-sm);
  flex-wrap: wrap;
  margin-top: var(--gap-lg);
}

.role-badge {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-2);
  letter-spacing: 0.05em;
}

/* Tech stack */
.stack-title {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--gap-lg);
  display: flex;
  gap: var(--gap-sm);
  align-items: center;
}

.stack-grid {
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg);
}

.stack-group-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--gap-sm);
}

.stack-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs);
}

/* Tech chips */
.tech-chip {
  padding: 5px 12px;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all var(--t-fast);
}

.chip-dotnet  { background: rgba(89,  61, 186, 0.15); border-color: rgba(89,  61, 186, 0.3); color: #A78BFA; }
.chip-csharp  { background: rgba(89,  61, 186, 0.1);  border-color: rgba(89,  61, 186, 0.2); color: #C084FC; }
.chip-react   { background: rgba(6,  182, 212, 0.1);  border-color: rgba(6,  182, 212, 0.25); color: #22D3EE; }
.chip-js      { background: rgba(245, 158, 11, 0.1);  border-color: rgba(245, 158, 11, 0.25); color: #FCD34D; }
.chip-html    { background: rgba(249, 115, 22, 0.1);  border-color: rgba(249, 115, 22, 0.25); color: #FB923C; }
.chip-tailwind{ background: rgba(6,  182, 212, 0.08); border-color: rgba(6,  182, 212, 0.2);  color: #67E8F9; }
.chip-sql     { background: rgba(59, 130, 246, 0.1);  border-color: rgba(59, 130, 246, 0.25); color: #93C5FD; }
.chip-docker  { background: rgba(14, 165, 233, 0.1);  border-color: rgba(14, 165, 233, 0.25); color: #38BDF8; }
.chip-git     { background: rgba(239, 68, 68, 0.1);   border-color: rgba(239, 68, 68, 0.25);  color: #FCA5A5; }
.chip-arch    { background: rgba(16, 185, 129, 0.1);  border-color: rgba(16, 185, 129, 0.25); color: #6EE7B7; }
.chip-test    { background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.2);  color: #FDE68A; }
.chip-angular { background: rgba(221, 0, 49, 0.1);   border-color: rgba(221, 0, 49, 0.25);  color: #FB7185; }
.chip-blazor  { background: rgba(81, 43, 212, 0.12); border-color: rgba(81, 43, 212, 0.3);   color: #A78BFA; }
.chip-vite    { background: rgba(100, 108, 255, 0.12); border-color: rgba(100, 108, 255, 0.3); color: #A5B4FC; }
.chip-vercel  { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.2); color: #E5E7EB; }

/* ── PROJECTS ─────────────────────────────────── */
.projects { background: var(--bg-0); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-lg);
}

/* Project card */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--gap-lg);
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-base), background var(--t-base),
              transform var(--t-base), box-shadow var(--t-base);
}

.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--blue-dim) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}

.project-card:hover {
  border-color: var(--border-hov);
  background: var(--bg-card-hov);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--border-hov);
}

.project-card:hover::before { opacity: 1; }

/* Featured cards */
.card-featured {
  border-color: rgba(59, 130, 246, 0.25);
}

.card-featured:hover {
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35),
              0 0 0 1px rgba(59, 130, 246, 0.4),
              0 0 40px rgba(59, 130, 246, 0.08);
}

.card-badge-featured {
  position: absolute;
  top: var(--gap-md);
  right: var(--gap-md);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 3px 8px;
  border-radius: 100px;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ort-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #FCA5A5;
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(220, 38, 38, 0.2);
  padding: 2px 8px;
  border-radius: 100px;
  margin: -4px 0 8px;
}

.card-icon { font-size: 1.5rem; line-height: 1; }

.card-completion {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--text-muted);
}

.card-featured .card-completion { color: var(--green); }
.card-completion--low           { color: var(--text-muted) !important; }

.card-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.03em;
  color: var(--text-1);
  line-height: 1.1;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.65;
  flex-grow: 1;
}

/* Progress bar */
.card-progress {
  height: 3px;
  background: var(--bg-3);
  border-radius: 100px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: var(--pct);
  background: var(--clr);
  border-radius: 100px;
  position: relative;
  transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 8px; height: 100%;
  background: white;
  opacity: 0.4;
  border-radius: 100px;
}

/* Card chips */
.card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs);
}

.card-chips span {
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  border: 1px solid transparent;
}

/* Card features */
.card-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs);
}

.feat {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 3px 8px;
  border-radius: var(--r-sm);
}

.feat-done    { color: var(--green); background: var(--green-dim); }
.feat-wip     { color: var(--amber); background: var(--amber-dim); }
.feat-pending { color: var(--text-muted); background: var(--bg-3); }

/* Card links */
.card-links {
  display: flex;
  gap: var(--gap-sm);
  margin-top: auto;
  padding-top: var(--gap-sm);
  border-top: 1px solid var(--border);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  transition: all var(--t-fast);
}

.card-link:hover {
  color: var(--blue);
  border-color: var(--blue);
  background: var(--blue-dim);
}

/* ── CONTACT ──────────────────────────────────── */
.contact { background: var(--bg-1); }

.contact-body {
  max-width: 640px;
}

.contact-text {
  font-size: 1.1rem;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: var(--gap-md);
}

.contact-text strong { color: var(--text-1); }

.contact-invite {
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--gap-xl);
}

.contact-grid {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  padding: var(--gap-md) var(--gap-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: all var(--t-base);
}

.contact-card:hover {
  border-color: var(--blue);
  background: var(--blue-dim);
  transform: translateX(4px);
}

.contact-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--blue-dim);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--blue);
  flex-shrink: 0;
  transition: background var(--t-fast), border-color var(--t-fast);
}

.contact-card:hover .contact-icon {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}

.contact-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-1);
}

.contact-arrow {
  font-family: var(--font-mono);
  color: var(--text-muted);
  transition: color var(--t-fast), transform var(--t-fast);
}

.contact-card:hover .contact-arrow {
  color: var(--blue);
  transform: translateX(4px);
}

/* ── FOOTER ───────────────────────────────────── */
.footer {
  background: var(--bg-0);
  border-top: 1px solid var(--border);
  padding: var(--gap-lg) var(--gap-lg);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  flex-wrap: wrap;
}

.footer-logo { color: var(--blue); }
.footer-text { font-size: 0.85rem; color: var(--text-muted); }
.footer-built { color: var(--text-muted); }

/* ── REVEAL ANIMATIONS ────────────────────────── */
.reveal,
.reveal-up,
.reveal-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-card { transition-duration: 0.7s; }

.reveal.visible,
.reveal-up.visible,
.reveal-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero reveals use CSS animations */
.reveal { transition: opacity 0.7s ease, transform 0.7s ease; }

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.35s; }
.reveal-delay-4 { transition-delay: 0.5s; }
.reveal-delay-5 { transition-delay: 0.65s; }

/* Stagger for project cards */
.reveal-card:nth-child(1) { transition-delay: 0s; }
.reveal-card:nth-child(2) { transition-delay: 0.08s; }
.reveal-card:nth-child(3) { transition-delay: 0.16s; }
.reveal-card:nth-child(4) { transition-delay: 0.24s; }
.reveal-card:nth-child(5) { transition-delay: 0.32s; }
.reveal-card:nth-child(6) { transition-delay: 0.4s; }

/* ── MOBILE NAV ───────────────────────────────── */
@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--bg-1);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--gap-lg);
    gap: var(--gap-lg);
    transform: translateY(-110%);
    transition: transform var(--t-base);
    z-index: 99;
  }

  .nav-links.open { transform: translateY(0); }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}

/* ── RESPONSIVE ───────────────────────────────── */
@media (max-width: 1100px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .projects-grid { grid-template-columns: 1fr; }

  .hero-name { font-size: clamp(4rem, 18vw, 7rem); }

  .hero-stats {
    gap: var(--gap-md);
    padding: var(--gap-md);
  }

  .stat-num { font-size: 1.8rem; }

  .section-inner { padding: var(--gap-xl) var(--gap-md); }

  .footer-inner { flex-direction: column; text-align: center; }

  .contact-card { gap: var(--gap-md); padding: var(--gap-md); }
}

@media (max-width: 400px) {
  .hero-cta { flex-direction: column; }
  .btn      { justify-content: center; }
}

/* ── FOCUS / ACCESSIBILITY ────────────────────── */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-up, .reveal-card {
    opacity: 1;
    transform: none;
  }
}

/* ── SELECTION ────────────────────────────────── */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: var(--text-1);
}

/* ── SCROLLBAR ────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb {
  background: var(--bg-3);
  border-radius: 100px;
}
::-webkit-scrollbar-thumb:hover { background: var(--blue); }