/* ============================================================
   Portfolio — Design System & Component Styles
   Yellow + Black Developer Theme
   ============================================================ */

/* ── Google Fonts ──────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --primary: #2563EB; /* Royal Blue main accent */
  --secondary: #1D4ED8; /* Slightly darker secondary blue */
  --bg-main: #0B0B0B;
  --bg-secondary: #1F1F1F;
  --card-bg: #181818;
  --text-main: #FFFFFF;
  --text-secondary: #A1A1AA;
  --gradient: linear-gradient(135deg, #2563EB, #1D4ED8);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,.35);
  --shadow-glow: 0 0 20px rgba(37,99,235,.15); /* match primary color */
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 1200px;
  --nav-h: 72px;
}

/* Light‑mode overrides */
.light-mode {
  --bg-main: #F5F5F5;        /* Main background */
  --bg-secondary: #E5E7EB;   /* Slightly darker section background */
  --card-bg: #FFFFFF;         /* Card background remains white for cleanliness */
  --text-main: #18181B;   
  --text-main2: #ffffff;     /* Dark text for readability */
  --text-secondary: #52525B;  /* Secondary text */
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-glow: 0 0 20px rgba(37,99,235,.12); /* Royal Blue glow for accents */
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  font-family: var(--font-body);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}
input, textarea {
  font-family: inherit;
  border: none;
  outline: none;
  background: none;
}

/* ── Utility ───────────────────────────────────────────────── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; position: relative; }
.section-label {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 8px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
}
.section-subtitle {
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 48px;
  font-size: 1rem;
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--transition);
}
.btn-primary {
  background: var(--gradient);
  color: #F3F4F6;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(250,204,21,.25); }
.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #F3F4F6; }

/* ── Scroll Progress Bar ───────────────────────────────────── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient);
  z-index: 10000;
  transition: width .1s linear;
}

/* ── Navbar ────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  z-index: 1000;
  background: rgba(11,11,11,.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
}
.light-mode .navbar { background: rgba(245,245,245,.8); border-bottom-color: rgba(0,0,0,.06); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo {
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: var(--transition);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-main); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 12px; }
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--text-main);
  font-size: 1.1rem;
  transition: var(--transition);
}
.theme-toggle:hover { border-color: var(--primary); color: var(--primary); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px 0;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: 100%;
  background: var(--bg-main);
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
  z-index: 999;
}
.mobile-menu.active { display: block; animation: slideDown .3s ease; }
.mobile-menu a {
  display: block;
  padding: 14px 24px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}
.mobile-menu a:hover { color: var(--primary); background: var(--bg-secondary); }

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(250,204,21,.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 720px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(250,204,21,.08);
  border: 1px solid rgba(250,204,21,.15);
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--primary);
  margin-bottom: 24px;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); animation: blink 1.4s infinite; }
@keyframes blink { 0%,100%{opacity:1}50%{opacity:.3} }
.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -1px;
}
.hero-roles {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--primary);
  margin-bottom: 12px;
  min-height: 1.6em;
}
.hero-roles .cursor { animation: cursorBlink .7s infinite; }
@keyframes cursorBlink { 0%,100%{opacity:1}50%{opacity:0} }
.hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  color: var(--text-secondary);
  animation: float 2.4s infinite ease-in-out;
}
.hero-scroll-indicator .arrow { font-size: 1rem; }
@keyframes float { 0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)} }

/* ── About ─────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  align-items: start;
}
.about-image-wrap {
  position: relative;
}
.about-image-wrap img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 1;
}
.about-image-wrap::after {
  content: '';
  position: absolute;
  inset: 8px -8px -8px 8px;
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: .4;
}
.about-text h3 { font-size: 1.4rem; margin-bottom: 16px; font-weight: 700; }
.about-text p { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.8; }
.about-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.about-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
}
.about-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.about-card .icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.about-card h4 { font-size: .95rem; font-weight: 600; margin-bottom: 4px; }
.about-card p { font-size: .82rem; color: var(--text-secondary); line-height: 1.5; margin: 0; }

/* Timeline */
.timeline { margin-top: 36px; position: relative; padding-left: 28px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(250,204,21,.2);
}
.timeline-item { position: relative; margin-bottom: 24px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(250,204,21,.15);
}
.timeline-item h4 { font-size: .95rem; font-weight: 600; margin-bottom: 2px; }
.timeline-item span { font-family: var(--font-mono); font-size: .75rem; color: var(--primary); }
.timeline-item p { font-size: .85rem; color: var(--text-secondary); margin-top: 4px; }

/* ── Skills ────────────────────────────────────────────────── */
.skills-categories { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.category-btn {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 500;
  background: var(--card-bg);
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
  cursor: pointer;
}
.category-btn.active, .category-btn:hover {
  background: var(--primary);
  color: #F3F4F6;
  border-color: var(--primary);
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.skill-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.skill-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.skill-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.skill-card-header h4 { font-size: 1rem; font-weight: 600; }
.skill-card-header span {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--primary);
}
.progress-bar {
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,.06);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: var(--gradient);
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

/* ── Projects ──────────────────────────────────────────────── */
.projects-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 36px;
}
.project-search {
  flex: 1;
  min-width: 220px;
  padding: 10px 18px;
  border-radius: 50px;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  color: var(--text-main);
  font-size: .9rem;
  transition: var(--transition);
}
.project-search::placeholder { color: var(--text-secondary); }
.project-search:focus { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.project-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-btn {
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 500;
  background: var(--card-bg);
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
  cursor: pointer;
}
.filter-btn.active, .filter-btn:hover {
  background: var(--primary);
  color: #F3F4F6;
  border-color: var(--primary);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.project-card:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow-glow); }
.project-card-image {
  width: 100%;
  height: 200px;
  background: var(--bg-secondary);
  overflow: hidden;
}
.project-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.project-card:hover .project-card-image img { transform: scale(1.05); }
.project-card-body { padding: 24px; }
.project-card-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.project-card-body p { color: var(--text-secondary); font-size: .88rem; line-height: 1.6; margin-bottom: 16px; }
.project-techs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.project-techs span {
  padding: 4px 12px;
  border-radius: 50px;
  font-family: var(--font-mono);
  font-size: .72rem;
  background: rgba(250,204,21,.08);
  color: var(--primary);
  border: 1px solid rgba(250,204,21,.15);
}
.project-links { display: flex; gap: 12px; }
.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.project-links a:hover { color: var(--primary); }
.projects-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

/* ── Social ────────────────────────────────────────────────── */
.social-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
}
.social-link {
  position: relative;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.08);
  font-size: 1.5rem;
  color: var(--text-Secondary, var(--text-secondary));
  transition: var(--transition);
}
.social-link:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 24px rgba(250,204,21,.2);
  transform: translateY(-4px);
}
.social-link .tooltip {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 4px 12px;
  border-radius: 6px;
  background: var(--primary);
  color: #0B0B0B;
  font-size: .72rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.social-link .tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--primary);
}
.social-link:hover .tooltip { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Contact ───────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-group { position: relative; }
.form-group label {
  display: block;
  font-size: .82rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  color: var(--text-main);
  font-size: .9rem;
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-group .error-msg {
  font-size: .75rem;
  color: #EF4444;
  margin-top: 4px;
  display: none;
}
.form-group.error input,
.form-group.error textarea { border-color: #EF4444; }
.form-group.error .error-msg { display: block; }

.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
}
.contact-info-card:hover { border-color: var(--primary); }
.contact-info-card .icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(250,204,21,.1);
  color: var(--primary);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-info-card h4 { font-size: .9rem; font-weight: 600; margin-bottom: 2px; }
.contact-info-card p { font-size: .85rem; color: var(--text-secondary); margin: 0; }
.contact-social { display: flex; gap: 12px; margin-top: 24px; }
.contact-social a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.06);
  color: var(--text-secondary);
  transition: var(--transition);
}
.contact-social a:hover { color: var(--primary); border-color: var(--primary); }

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  padding: 48px 0 24px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p { color: var(--text-secondary); font-size: .88rem; margin-top: 12px; max-width: 300px; line-height: 1.7; }
.footer-col h4 { font-size: .95rem; font-weight: 600; margin-bottom: 16px; color: var(--primary); }
.footer-col a { display: block; font-size: .88rem; color: var(--text-secondary); padding: 4px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: .82rem;
  color: var(--text-secondary);
}
.footer-social { display: flex; gap: 14px; }
.footer-social a { color: var(--text-secondary); font-size: 1rem; transition: var(--transition); }
.footer-social a:hover { color: var(--primary); }

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gradient);
  color: #0B0B0B;
  font-size: 1.2rem;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(250,204,21,.3); }

/* ── Toast ─────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 90px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--text-main);
  font-size: .88rem;
  box-shadow: var(--shadow);
  animation: toastIn .3s ease;
  min-width: 280px;
}
.toast.success { border-left: 3px solid #22C55E; }
.toast.error   { border-left: 3px solid #EF4444; }
.toast.info    { border-left: 3px solid var(--primary); }
.toast-icon { font-size: 1.2rem; }
.toast.success .toast-icon { color: #22C55E; }
.toast.error   .toast-icon { color: #EF4444; }
.toast.info    .toast-icon { color: var(--primary); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Scroll reveal ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Loading skeleton ──────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--card-bg) 25%, rgba(255,255,255,.05) 50%, var(--card-bg) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}
@keyframes shimmer { 0%{background-position:200% 0}100%{background-position:-200% 0} }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-image-wrap { max-width: 260px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .projects-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero h1 { font-size: clamp(2rem, 6vw, 3rem); }
  .about-cards { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}
@media (max-width: 480px) {
  .section { padding: 60px 0 10px; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .projects-toolbar { flex-direction: column; }
  .project-search { min-width: 100%; }
}