/* =============================================
   CHINMAY SACHAN — PORTFOLIO CSS
   Dark Glassmorphism + Neon Accents
   ============================================= */

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

:root {
  --bg-0: #050816;
  --bg-1: #0a0f24;
  --bg-2: #0f1635;
  --bg-glass: rgba(15, 22, 53, 0.6);
  --bg-glass-light: rgba(255,255,255,0.04);
  --accent-blue: #4f8ef7;
  --accent-purple: #a855f7;
  --accent-cyan: #22d3ee;
  --accent-orange: #fb923c;
  --accent-grad: linear-gradient(135deg, #4f8ef7 0%, #a855f7 100%);
  --text-primary: #f0f4ff;
  --text-secondary: #8892b0;
  --text-muted: #4a5568;
  --border: rgba(79,142,247,0.15);
  --border-hover: rgba(79,142,247,0.4);
  --shadow: 0 4px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(79,142,247,0.2);
  --radius: 16px;
  --radius-sm: 8px;
  --font-primary: 'Space Grotesk', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  --font-mono: 'Fira Code', monospace;
  --nav-h: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-0);
  color: var(--text-primary);
  font-family: var(--font-secondary);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== CANVAS PARTICLES ===== */
#particle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

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

/* ===== UTILITIES ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.gradient-text { background: var(--accent-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.1);
  transform: translateX(-100%);
  transition: transform 0.4s ease;
}
.btn:hover::before { transform: translateX(0); }

.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 4px 24px rgba(79,142,247,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79,142,247,0.6);
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  background: var(--bg-glass-light);
}
.btn-outline {
  background: transparent;
  color: var(--accent-blue);
  border: 1.5px solid var(--accent-blue);
}
.btn-outline:hover {
  background: rgba(79,142,247,0.15);
  transform: translateY(-2px);
}
.full-width { width: 100%; justify-content: center; }

/* ===== NAV ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background 0.4s ease, border-bottom 0.4s ease;
}
#navbar.scrolled {
  background: rgba(5,8,22,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  margin-right: auto;
}
.logo-bracket { color: var(--accent-blue); }
.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
}
.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 50px;
  transition: var(--transition);
  font-family: var(--font-primary);
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: var(--bg-glass-light);
}
.nav-cta { padding: 10px 22px; font-size: 0.875rem; }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--nav-h) 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 60px;
  position: relative;
  z-index: 1;
}
.hero-content { flex: 1; min-width: 0; }
.hero-greeting {
  font-family: var(--font-mono);
  color: var(--accent-blue);
  font-size: 1rem;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.hero-name {
  font-family: var(--font-primary);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 2em;
}
.typing-text { color: var(--accent-cyan); }
.cursor {
  color: var(--accent-cyan);
  animation: blink 0.8s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-primary);
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* Avatar */
.hero-visual {
  flex: 0 0 420px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.avatar-wrapper {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.avatar-ring {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: var(--accent-grad) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: spin 8s linear infinite;
}
.ring-2 {
  inset: -35px;
  animation: spin 12s linear infinite reverse;
  opacity: 0.4;
}
@keyframes spin { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }

.avatar-img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  position: relative;
  z-index: 2;
  filter: brightness(1.05) contrast(1.05);
}
.avatar-badge {
  position: absolute;
  bottom: 10px;
  right: -10px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 8px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  z-index: 3;
  white-space: nowrap;
}

/* Floating Cards */
.floating-card {
  position: absolute;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  z-index: 4;
  animation: float 4s ease-in-out infinite;
}
.fc-icon { font-size: 1.2rem; }
.card-1 { top: 10px; right: -20px; animation-delay: 0s; }
.card-2 { bottom: 60px; left: -40px; animation-delay: 1.5s; }
.card-3 { top: 100px; left: -60px; animation-delay: 0.8s; }
@keyframes float {
  0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)}
}

.scroll-indicator {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.6)} }

/* ===== SECTIONS BASE ===== */
.section { padding: 100px 0; position: relative; z-index: 1; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.section-title {
  font-family: var(--font-primary);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
}
.section-sub { color: var(--text-secondary); margin-top: 12px; font-size: 1.05rem; }

/* ===== REVEAL ANIMATION ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== ABOUT ===== */
.about-section { background: linear-gradient(180deg, transparent 0%, rgba(79,142,247,0.04) 50%, transparent 100%); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.02rem;
  line-height: 1.85;
}
.about-text strong { color: var(--text-primary); }
.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0;
}
.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.highlight-item:hover { border-color: var(--border-hover); }
.highlight-icon { font-size: 1.3rem; flex-shrink: 0; }
.highlight-item div { display: flex; flex-direction: column; }
.highlight-item strong { font-size: 0.85rem; color: var(--text-primary); margin-bottom: 2px; }
.highlight-item span { font-size: 0.82rem; color: var(--text-secondary); }

/* Code Window */
.code-window {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.code-titlebar {
  background: #161b22;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.code-filename { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); margin-left: 8px; }
.code-body { padding: 24px; font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.8; overflow-x: auto; }
.c-keyword { color: #ff79c6; }
.c-class { color: #50fa7b; }
.c-func { color: #50fa7b; }
.c-str { color: #f1fa8c; }
.c-bool { color: #bd93f9; }
.c-comment { color: #6272a4; font-style: italic; }

/* ===== SKILLS ===== */
.skills-section {}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.skills-category {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.skills-category:hover { border-color: var(--border-hover); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.category-title {
  font-family: var(--font-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.emoji { font-size: 1.3rem; }
.skill-items { display: flex; flex-direction: column; gap: 14px; }
.skill-bar-item {}
.skill-info { display: flex; justify-content: space-between; margin-bottom: 6px; }
.skill-info span { font-size: 0.875rem; color: var(--text-secondary); }
.skill-pct { font-family: var(--font-mono); color: var(--accent-blue) !important; }
.skill-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  width: 0;
  background: var(--accent-grad);
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tag {
  padding: 6px 14px;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 50px;
  font-size: 0.82rem;
  color: var(--accent-blue);
  font-weight: 500;
  transition: var(--transition);
}
.skill-tag:hover { background: rgba(79,142,247,0.2); border-color: var(--accent-blue); }

/* ===== PROJECTS ===== */
.projects-section { background: linear-gradient(180deg, transparent 0%, rgba(168,85,247,0.04) 50%, transparent 100%); }
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.project-card:hover { border-color: var(--border-hover); transform: translateY(-6px); box-shadow: var(--shadow-glow); }
.project-card:hover::before { transform: scaleX(1); }

.project-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(79,142,247,0.08) 0%, rgba(168,85,247,0.08) 100%);
  border-color: rgba(79,142,247,0.3);
}
.project-featured-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(79,142,247,0.15);
  border: 1px solid rgba(79,142,247,0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 10px;
}
.project-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.project-icon { font-size: 2rem; }
.project-links { display: flex; gap: 8px; }
.icon-link {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-glass-light);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}
.icon-link svg { width: 18px; height: 18px; }
.icon-link:hover { color: var(--accent-blue); border-color: var(--accent-blue); background: rgba(79,142,247,0.1); }
.project-title {
  font-family: var(--font-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.project-desc { font-size: 0.875rem; color: var(--text-secondary); flex: 1; line-height: 1.7; margin-bottom: 18px; }
.project-tech { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.tech-tag {
  padding: 4px 10px;
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.2);
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-purple);
}

.cta-card {
  background: linear-gradient(135deg, rgba(79,142,247,0.05) 0%, rgba(168,85,247,0.05) 100%);
  border-style: dashed;
  justify-content: center;
  align-items: center;
}
.cta-inner { text-align: center; }
.cta-emoji { font-size: 2.5rem; display: block; margin-bottom: 12px; }
.cta-inner h3 { font-family: var(--font-primary); font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
.cta-inner p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 20px; }

/* ===== CERTIFICATIONS ===== */
.certs-section {}
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cert-card {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.cert-card:hover { transform: translateY(-6px); border-color: var(--border-hover); }
.cert-glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  opacity: 0.6;
  filter: blur(60px);
  transition: opacity 0.4s ease;
}
.cert-card:hover .cert-glow { opacity: 1; }
.glow-blue { background: radial-gradient(circle, rgba(79,142,247,0.5) 0%, transparent 70%); }
.glow-purple { background: radial-gradient(circle, rgba(168,85,247,0.5) 0%, transparent 70%); }
.glow-orange { background: radial-gradient(circle, rgba(251,146,60,0.5) 0%, transparent 70%); }

.cert-content { position: relative; z-index: 1; flex: 1; display: flex; flex-direction: column; }
.cert-icon-wrap { margin-bottom: 16px; }
.cert-emoji { font-size: 2.5rem; }
.cert-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(79,142,247,0.15);
  border: 1px solid rgba(79,142,247,0.3);
  border-radius: 50px;
  font-size: 0.72rem;
  color: var(--accent-blue);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.cert-title {
  font-family: var(--font-primary);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.3;
}
.cert-issuer { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 14px; }
.cert-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 18px; flex: 1; }
.cert-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 24px; }
.cert-tags span {
  padding: 4px 10px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.cert-btn { width: 100%; justify-content: center; margin-top: auto; }

/* ===== CONTACT ===== */
.contact-section { background: linear-gradient(180deg, transparent 0%, rgba(34,211,238,0.04) 50%, transparent 100%); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--border-hover); transform: translateX(6px); background: var(--bg-glass-light); }
.contact-card.static:hover { transform: none; cursor: default; }
.contact-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: var(--radius-sm);
  font-size: 1.4rem;
  flex-shrink: 0;
}
.contact-card div { flex: 1; }
.contact-card strong { display: block; font-size: 0.95rem; font-weight: 600; margin-bottom: 2px; }
.contact-card span { font-size: 0.82rem; color: var(--text-secondary); }
.arrow { color: var(--text-muted); font-size: 1.2rem; }
.status-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

/* Form */
.contact-form-wrap {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }
.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--text-primary);
  font-family: var(--font-secondary);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
  background: rgba(79,142,247,0.05);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-note { text-align: center; color: #10b981; font-size: 0.875rem; }

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  position: relative;
  z-index: 1;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy { font-size: 0.85rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 0.85rem; color: var(--text-muted); text-decoration: none; transition: var(--transition); }
.footer-links a:hover { color: var(--accent-blue); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero { flex-direction: column; text-align: center; gap: 48px; }
  .hero-desc { max-width: 100%; }
  .hero-btns { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { flex: none; width: 100%; }
  .scroll-indicator { position: relative; bottom: auto; margin-top: 24px; }
  .about-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card.featured { grid-column: span 2; }
  .certs-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(5,8,22,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
  }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-highlights { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--nav-h) + 20px); }
  .card-1, .card-2, .card-3 { display: none; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .section { padding: 70px 0; }
  .hero-name { font-size: 2.4rem; }
  .contact-form-wrap { padding: 24px; }
}