/* ==========================================================================
   Aesthetic: "Digital Architect" — warm obsidian, blue accent, Syne + Outfit
   ========================================================================== */

/* ---------- Custom Properties ---------- */
:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111112;
  --bg-card: rgba(17, 17, 18, 0.75);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.11);

  --text-primary: #f0ece5;
  --text-secondary: #8a8a8a;
  --text-tertiary: #4a4a4a;

  --accent: #4895ef;
  --accent-hover: #5ba3f5;
  --accent-glow: rgba(72, 149, 239, 0.15);
  --accent-dim: rgba(72, 149, 239, 0.08);

  --font-display: 'Syne', sans-serif;
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --nav-height: 72px;
  --section-padding: 6rem 0;
  --container-max: 1200px;
  --container-padding: 0 2rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
  --transition-slow: 0.6s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  cursor: none;
  background-image:
    radial-gradient(120% 120% at 10% 10%, rgba(72, 149, 239, 0.14), transparent 55%),
    radial-gradient(120% 120% at 90% 90%, rgba(72, 149, 239, 0.1), transparent 60%),
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(72, 149, 239, 0.07) 0%, transparent 60%);
}

ul { list-style: none; }
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; height: auto; }
button { background: none; border: none; cursor: none; font-family: inherit; }
h1, h2, h3, h4 { line-height: 1.15; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-medium); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---------- Custom Cursor ---------- */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
}

.cursor-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.15s, height 0.15s, background 0.15s;
}

.cursor-ring {
  position: absolute;
  width: 36px;
  height: 36px;
  border: 1.5px solid rgba(72, 149, 239, 0.45);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

@media (max-width: 1024px) {
  .cursor { display: none; }
  body, button { cursor: auto; }
  a { cursor: pointer; }
}

/* ---------- Navigation ---------- */
#navbar {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 2.5rem);
  max-width: var(--container-max);
  z-index: 1000;
  background: rgba(10, 10, 11, 0.55);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

#navbar.scrolled {
  background: rgba(10, 10, 11, 0.92);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: var(--nav-height);
  gap: 1.5rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  transition: color var(--transition-fast);
  flex-shrink: 0;
  letter-spacing: -0.01em;
}

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

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: width var(--transition-base);
}

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

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

.btn-connect {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--accent-dim);
  border: 1px solid rgba(72, 149, 239, 0.28);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.2rem;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-connect:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  flex-shrink: 0;
  cursor: pointer !important;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  visibility: hidden;
}

.mobile-menu.open {
  pointer-events: auto;
  visibility: visible;
}

.mobile-menu-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  opacity: 0;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(4px);
}

.mobile-menu.open .mobile-menu-overlay {
  opacity: 1;
}

.mobile-menu-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(300px, 85vw);
  height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-subtle);
  padding: 2rem 1.5rem;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mobile-menu.open .mobile-menu-panel {
  transform: translateX(0);
}

.mobile-menu-close {
  align-self: flex-end;
  font-size: 1.25rem;
  color: var(--text-secondary);
  padding: 0.5rem;
  transition: color var(--transition-fast);
  cursor: pointer !important;
}

.mobile-menu-close:hover { color: var(--text-primary); }

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav-link {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover { color: var(--accent); }

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

/* ---------- Section Utilities ---------- */
.section {
  padding: var(--section-padding);
  position: relative;
}

.section-compact {
  padding: 3rem 0 1.25rem;
}

.section-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

.section-header {
  margin-bottom: 4rem;
  text-align: center;
}

.section-header-inline {
  margin-bottom: 1.4rem;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.2rem;
}

.section-summary {
  max-width: 440px;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ---------- Hero Section ---------- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(var(--nav-height) + 3.5rem) 2rem 4rem;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(72, 149, 239, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(72, 149, 239, 0.08) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at 45% 45%, rgba(0, 0, 0, 0.9), transparent 78%);
  pointer-events: none;
  z-index: -1;
}

.hero-watermark {
  position: absolute;
  right: 2rem;
  top: calc(var(--nav-height) + 5.5rem);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: rgba(164, 196, 234, 0.65);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  z-index: 1;
}

#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.hero-content {
  flex: 1;
  max-width: 620px;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.4rem 1rem;
  margin-bottom: 2rem;
}

.hero-current {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: #8ca8c8;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: #4ade80;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.6);
  animation: pulse-dot 2.5s infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 8px rgba(74, 222, 128, 0.6); }
  50% { box-shadow: 0 0 18px rgba(74, 222, 128, 0.9); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.hero-name-accent {
  color: var(--accent);
  display: block;
  position: relative;
}

.hero-name-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 40%;
  height: 3px;
  background: linear-gradient(to right, var(--accent), transparent);
  border-radius: 2px;
}

.hero-spec {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #9ab3d2;
  letter-spacing: 0.04em;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.hero-spec strong {
  color: var(--accent);
  font-weight: 600;
}

.hero-role {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.hero-role-accent {
  color: var(--accent);
  font-weight: 600;
  min-width: 200px;
  display: inline-block;
}

.hero-tagline {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.hero-socials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 3rem;
}

.social-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.45rem 0.95rem;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.social-pill:hover {
  color: var(--accent);
  border-color: rgba(72, 149, 239, 0.35);
  background: var(--accent-dim);
}

.hero-scroll-hint {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: #8ea6c4;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.scroll-line {
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: linear-gradient(to right, var(--border-medium), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  animation: scroll-sweep 2.5s ease-in-out infinite;
}

@keyframes scroll-sweep {
  0% { left: -100%; }
  100% { left: 100%; }
}

.hero-image-wrap {
  position: relative;
  flex-shrink: 0;
  width: 320px;
  height: 320px;
  z-index: 1;
  animation: hero-float 5s ease-in-out infinite;
}

@keyframes hero-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-image-ring {
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 2px solid rgba(72, 149, 239, 0.65);
  animation: ring-breathe 3.5s ease-in-out infinite;
}

.hero-image-ring::before {
  content: '';
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid rgba(72, 149, 239, 0.25);
}

@keyframes ring-breathe {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.04); opacity: 0.7; }
}

.hero-image {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-medium);
  box-shadow: 0 0 70px var(--accent-glow), 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* ---------- About Section ---------- */
#about {
  background: linear-gradient(to bottom, transparent, rgba(17, 17, 18, 0.4), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: center;
}

.about-image-frame {
  position: relative;
  width: fit-content;
  isolation: isolate;
}

.about-image {
  width: 380px;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  filter: grayscale(15%);
  transition: filter var(--transition-slow);
  position: relative;
  z-index: 1;
}

.about-image:hover { filter: grayscale(0%); }

.about-image-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 60%;
  height: 60%;
  border: 2px solid rgba(72, 149, 239, 0.55);
  border-radius: var(--radius-lg);
  z-index: 0;
  pointer-events: none;
}

.about-text-col .section-eyebrow,
.about-text-col .section-title {
  text-align: left;
}

.about-text-col .section-title {
  margin-bottom: 1.5rem;
}

.about-body {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-full);
  padding: 0.75rem 1.75rem;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 8px 24px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-primary i {
  font-size: 0.78rem;
  transition: transform var(--transition-fast);
}

.btn-primary:hover i { transform: translateX(4px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  padding: 0.75rem 1.75rem;
  transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

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

.btn-secondary i {
  font-size: 0.78rem;
  transition: transform var(--transition-fast);
}

.btn-secondary:hover i { transform: translateX(4px); }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

/* ---------- Education Timeline ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  max-width: 720px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border-medium) 15%, var(--border-medium) 85%, transparent);
}

.timeline-item {
  position: relative;
  padding-left: 3.25rem;
}

.timeline-node {
  position: absolute;
  left: 0;
  top: 1.6rem;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}

.timeline-node::after {
  content: '';
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.timeline-card {
  padding: 2rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  border-left: 2px solid transparent;
}

.timeline-card:hover {
  border-left-color: var(--accent);
  box-shadow: var(--shadow-card), -4px 0 30px var(--accent-glow);
}

.timeline-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.timeline-badge {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(72, 149, 239, 0.2);
  border-radius: var(--radius-full);
  padding: 0.22rem 0.7rem;
}

.timeline-level {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: #a9bfd9;
  background: rgba(72, 149, 239, 0.08);
  border: 1px solid rgba(72, 149, 239, 0.22);
  border-radius: var(--radius-full);
  padding: 0.22rem 0.7rem;
  font-weight: 500;
}

.timeline-degree {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.timeline-school {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.timeline-achievements {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.timeline-achievements li {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.timeline-achievements li i {
  color: var(--accent);
  font-size: 0.6rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ---------- Skills Bento Grid ---------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.bento-card {
  padding: 1.1rem 1.25rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--accent-glow), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.bento-card:hover {
  box-shadow: var(--shadow-card), 0 16px 40px var(--accent-glow);
  border-color: rgba(72, 149, 239, 0.2);
}

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

.bento-wide { grid-column: span 2; }

.bento-card-icon {
  font-size: 1.5rem;
  color: var(--accent);
  flex-shrink: 0;
}

.bento-card-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.bento-card-meta {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.bento-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0;
  letter-spacing: -0.01em;
}

.bento-card-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.code-snippet {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  overflow-x: auto;
}

.code-snippet pre { margin: 0; }

.code-snippet code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.55;
  display: block;
  white-space: pre;
}

/* Syntax colors (One Dark inspired) */
.tok-tag { color: #e06c75; }
.tok-attr { color: #d19a66; }
.tok-str { color: #98c379; }
.tok-txt { color: #abb2bf; }
.tok-sel { color: #e06c75; }
.tok-prop { color: #61afef; }
.tok-val { color: #98c379; }
.tok-kw { color: #c678dd; }
.tok-fn { color: #61afef; }
.tok-var { color: #e06c75; }
.tok-num { color: #d19a66; }

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.project-filter-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.project-filter-btn:hover,
.project-filter-btn.is-active {
  color: var(--text-primary);
  border-color: rgba(72, 149, 239, 0.35);
  background: rgba(72, 149, 239, 0.12);
}

.project-filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

.project-card.is-hidden {
  display: none;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  transform-style: preserve-3d;
}

.project-card:hover {
  box-shadow: var(--shadow-card), 0 16px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--border-medium);
}

/* ---------- Impact Snapshot ---------- */
.stats-bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

.stat-card {
  padding: 1.1rem 1rem;
  min-height: 140px;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  right: -45px;
  top: -50px;
  background: radial-gradient(circle, rgba(72, 149, 239, 0.24), transparent 70%);
  pointer-events: none;
}

.stat-card:hover {
  border-color: rgba(72, 149, 239, 0.35);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.stat-card--feature {
  grid-column: span 2;
  background: linear-gradient(120deg, rgba(72, 149, 239, 0.15), rgba(17, 17, 18, 0.72));
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: #a2bbda;
  margin-bottom: 0.65rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.stat-meta {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.project-card-accent {
  height: 3px;
  background: var(--project-color, var(--accent));
  margin: -1px -1px 0;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.project-card-body {
  flex: 1;
  padding: 2rem;
}

.project-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.project-featured-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: #c678dd;
  background: rgba(198, 120, 221, 0.1);
  border: 1px solid rgba(198, 120, 221, 0.25);
  border-radius: var(--radius-full);
  padding: 0.15rem 0.55rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(72, 149, 239, 0.2);
  border-radius: var(--radius-full);
  padding: 0.22rem 0.7rem;
}

.project-card-footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.project-link:hover { color: var(--accent); }

.project-link--live {
  margin-left: auto;
  color: var(--accent);
}

.project-link--live:hover { color: var(--accent-hover); }

.project-link--lab {
  margin-left: auto;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-size: inherit;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.project-link--lab:hover { color: var(--accent-hover); }

.project-card--cta {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  background: var(--accent-dim);
  border: 1px dashed rgba(72, 149, 239, 0.3);
}

.project-card--cta:hover {
  border-color: var(--accent);
  background: rgba(72, 149, 239, 0.12);
}

.project-cta-inner {
  text-align: center;
  padding: 2rem;
}

.project-cta-icon {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.project-cta-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-cta-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* ---------- Interactive Project Lab (merged into Projects) ---------- */
.lab-divider {
  margin: 3.5rem 0 1.75rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.lab-divider-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.lab-divider-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.lab-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.4rem;
  align-items: start;
  position: relative;
  z-index: 1;
}

.lab-list {
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  position: sticky;
  top: calc(var(--nav-height) + 1.25rem);
  z-index: 3;
}

.lab-item {
  text-align: left;
  width: 100%;
  padding: 0.9rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: rgba(10, 16, 28, 0.55);
  color: var(--text-secondary);
  transition: border-color var(--transition-fast), transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  cursor: pointer !important;
}

.lab-item:hover {
  transform: translateX(3px);
  border-color: rgba(72, 149, 239, 0.35);
  color: var(--text-primary);
  background: rgba(72, 149, 239, 0.08);
}

.lab-item.is-active {
  border-color: rgba(72, 149, 239, 0.55);
  background: linear-gradient(90deg, rgba(72, 149, 239, 0.22), rgba(72, 149, 239, 0.06));
  color: var(--text-primary);
  box-shadow: inset 3px 0 0 rgba(72, 149, 239, 0.9);
}

.lab-item:focus-visible {
  outline: 2px solid rgba(133, 194, 255, 0.95);
  outline-offset: 2px;
}

.lab-item-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.01rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.lab-item-meta {
  display: block;
  margin-top: 0.18rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: #8ca8c8;
  text-transform: uppercase;
}

.lab-view {
  padding: 1.25rem;
  border-color: rgba(72, 149, 239, 0.2);
  position: relative;
  z-index: 1;
}

.lab-meta {
  margin-bottom: 1rem;
}

.lab-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #93bcf0;
  border: 1px solid rgba(72, 149, 239, 0.28);
  background: rgba(72, 149, 239, 0.1);
  border-radius: var(--radius-full);
  padding: 0.18rem 0.6rem;
  margin-bottom: 0.55rem;
}

.lab-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.lab-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 0.85rem;
}

.lab-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.lab-stack-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #abd0ff;
  border: 1px solid rgba(72, 149, 239, 0.22);
  background: rgba(72, 149, 239, 0.08);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.6rem;
}

.lab-frame-shell {
  position: relative;
  background: rgba(3, 8, 18, 0.9);
  border: 1px solid rgba(72, 149, 239, 0.25);
  border-radius: var(--radius-md);
  min-height: 430px;
  overflow: hidden;
}

.lab-frame-shell::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(72, 149, 239, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(72, 149, 239, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

#lab-embed {
  width: 100%;
  min-height: 430px;
  border: 0;
  background: transparent;
  position: relative;
  z-index: 1;
}

.lab-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  z-index: 2;
  background: linear-gradient(145deg, rgba(7, 16, 31, 0.95), rgba(8, 22, 43, 0.95));
}

.lab-fallback-icon {
  font-size: 1.9rem;
  color: #6cb0ff;
  margin-bottom: 0.75rem;
}

.lab-fallback h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.45rem;
}

.lab-fallback p {
  max-width: 440px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.lab-actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.lab-actions .btn-primary:focus-visible,
.lab-actions .btn-secondary:focus-visible {
  outline: 2px solid rgba(133, 194, 255, 0.95);
  outline-offset: 2px;
}

/* ---------- Experience ---------- */
.exp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.exp-card {
  padding: 2rem;
  border-left: 3px solid transparent;
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.exp-card:hover {
  border-left-color: var(--accent);
  box-shadow: var(--shadow-card), -3px 0 20px var(--accent-glow);
}

.exp-card--featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--bg-card), rgba(72, 149, 239, 0.06));
}

.exp-card--globe {
  background: linear-gradient(135deg, var(--bg-card), rgba(30, 120, 220, 0.07));
}

.exp-card--globe .exp-card-period {
  color: #1e78dc;
  background: rgba(30, 120, 220, 0.1);
  border-color: rgba(30, 120, 220, 0.25);
}

.exp-card--globe .exp-card-icon { color: #1e78dc; }

.exp-card--globe:hover {
  box-shadow: var(--shadow-card), -3px 0 20px rgba(30, 120, 220, 0.18);
  border-left-color: #1e78dc;
}

.exp-card-period {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(72, 149, 239, 0.2);
  border-radius: var(--radius-full);
  padding: 0.22rem 0.7rem;
  display: inline-block;
  margin-bottom: 1.25rem;
}

.exp-card-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  opacity: 0.85;
}

.exp-card-role {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.exp-card-org {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}

.exp-card-school {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  line-height: 1.4;
}

/* ---------- Honors & Awards ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 960px;
  margin: 0 auto;
}

.cert-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.75rem;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.cert-card:hover {
  border-color: rgba(72, 149, 239, 0.3);
}

.cert-icon {
  font-size: 1.75rem;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.cert-body { flex: 1; }

.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  display: block;
  margin-bottom: 0.4rem;
}

.cert-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}

.cert-meta {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ---------- GitHub Activity ---------- */
.github-stats-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
  max-width: 860px;
  margin: 0 auto;
}

.github-profile-card,
.github-langs-card {
  padding: 2rem;
}

.github-profile-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.github-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--border-medium);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.github-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.github-profile-link {
  font-family: var(--font-mono);
  font-size: 0.77rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.github-profile-link:hover { color: var(--accent); }

.github-stat-row {
  display: flex;
  gap: 1rem;
}

.github-stat-item {
  flex: 1;
  text-align: center;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.github-stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.github-stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.github-langs-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.github-langs-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.github-lang-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.github-lang-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.github-lang-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.github-lang-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.github-lang-pct {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.github-lang-bar {
  height: 4px;
  background: var(--border-subtle);
  border-radius: 2px;
  overflow: hidden;
}

.github-lang-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 1s ease;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  padding: 5rem 0 2rem;
}

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  display: inline-block;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.footer-logo:hover { color: var(--accent); }

.footer-bio {
  font-size: 0.89rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.footer-section-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-contact-list li i {
  color: var(--accent);
  width: 14px;
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-contact-list a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-contact-list a:hover { color: var(--accent); }

.footer-social-links {
  display: flex;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.footer-social-link:hover {
  color: var(--accent);
  border-color: rgba(72, 149, 239, 0.35);
  background: var(--accent-dim);
}

.footer-social-note {
  font-size: 0.83rem;
  color: var(--text-tertiary);
  line-height: 1.55;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.83rem;
  color: var(--text-tertiary);
}

.footer-bottom-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-bottom-links a {
  font-size: 0.83rem;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover { color: var(--text-secondary); }

/* ---------- Back To Top ---------- */
.back-to-top {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(72, 149, 239, 0.35);
  background: rgba(10, 10, 11, 0.9);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast), background var(--transition-fast);
  z-index: 990;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: rgba(72, 149, 239, 0.14);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-links,
  .btn-connect { display: none; }
  .hamburger { display: flex; }

  .stats-bento {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-card--feature {
    grid-column: span 2;
  }

  #hero {
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
    gap: 2.5rem;
    padding-top: calc(var(--nav-height) + 2.5rem);
    min-height: unset;
    padding-bottom: 4rem;
  }

  .hero-name-accent::after { display: none; }
  .hero-socials { justify-content: center; }
  .hero-scroll-hint { justify-content: center; }
  .hero-content { max-width: 100%; }
  .hero-watermark { display: none; }

  .hero-image-wrap {
    width: 240px;
    height: 240px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-image {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .about-image-frame {
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .about-image-accent { display: none; }
  .about-text-col .section-eyebrow,
  .about-text-col .section-title { text-align: center; }
  .about-text-col { text-align: center; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .footer-brand { grid-column: span 2; }

  .projects-grid { grid-template-columns: 1fr 1fr; }
  .lab-layout { grid-template-columns: 1fr; }
  .lab-list {
    position: static;
    max-height: 260px;
    overflow-y: auto;
  }
  .exp-grid { grid-template-columns: 1fr 1fr; }
  .exp-card--featured { grid-column: span 2; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .github-stats-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --section-padding: 4rem 0; }

  .section-header-inline {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-summary {
    max-width: 100%;
  }

  .project-filter-count {
    margin-left: 0;
    width: 100%;
  }

  .stats-bento { grid-template-columns: 1fr; }
  .stat-card--feature { grid-column: span 1; }

  .bento-grid { grid-template-columns: 1fr; }
  .bento-wide { grid-column: span 1; }

  .projects-grid { grid-template-columns: 1fr; }
  .lab-frame-shell,
  #lab-embed { min-height: 340px; }
  .exp-grid { grid-template-columns: 1fr; }
  .exp-card--featured { grid-column: span 1; }
  .cert-grid { grid-template-columns: 1fr; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-brand { grid-column: span 1; }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  :root { --container-padding: 0 1.25rem; }

  #navbar {
    width: calc(100% - 1.5rem);
    top: 10px;
  }

  .hero-socials { gap: 0.4rem; }

  .social-pill {
    font-size: 0.76rem;
    padding: 0.38rem 0.7rem;
  }

  .timeline-card { padding: 1.5rem; }

  .back-to-top {
    right: 0.9rem;
    bottom: 0.9rem;
  }
}