/* ============================================================
   Portfolio – Venkata Adapala
   Dark theme · Glassmorphism · Scroll-reveal · Multi-page
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* ---- Variables ---- */
:root {
  --bg:          #060c1a;
  --bg-2:        #0a1428;
  --card:        rgba(10, 20, 42, 0.85);
  --card-solid:  #0b1730;
  --accent:      #4f9eff;
  --teal:        #00d4aa;
  --purple:      #9b6dff;
  --amber:       #ffa94d;
  --text:        #e2e8f0;
  --text-dim:    #9aadcc;
  --muted:       #58687f;
  --border:      rgba(79, 158, 255, 0.18);
  --border-soft: rgba(79, 158, 255, 0.08);
  --shadow:      0 12px 40px rgba(0, 0, 0, 0.55);
  --glow-blue:   0 0 32px rgba(79, 158, 255, 0.22);
  --glow-teal:   0 0 32px rgba(0, 212, 170, 0.22);
  --font-head:   'Space Grotesk', system-ui, sans-serif;
  --font-body:   'Inter', system-ui, sans-serif;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 3rem);
  background: rgba(6, 12, 26, 0.82);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.nav-logo em { font-style: normal; color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 13px;
  border-radius: 7px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent); background: rgba(79,158,255,0.09); }

.nav-resume {
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  background: transparent !important;
  padding: 5px 14px !important;
  border-radius: 7px;
  font-weight: 600 !important;
  font-size: 0.82rem !important;
  transition: background 0.2s, color 0.2s !important;
}
.nav-resume:hover { background: var(--accent) !important; color: var(--bg) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 2rem 5rem;
  overflow: hidden;
}

#star-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 50% -5%, rgba(79,158,255,0.1) 0%, transparent 65%),
    radial-gradient(ellipse 45% 35% at 85% 80%, rgba(0,212,170,0.07) 0%, transparent 55%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 740px;
}

/* Hero photo */
.hero-photo {
  display: block;
  width: 200px;
  border-radius: 12px;
  margin: 0 auto 1.75rem;
  object-fit: cover;
  border: 1px solid var(--border);
}

/* Text */
.hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.hero-name {
  font-family: var(--font-head);
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
  background: linear-gradient(120deg, #fff 0%, var(--accent) 50%, var(--teal) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 5s ease-in-out infinite;
}
@keyframes shimmer { 0%,100%{ background-position:0% 50%; } 50%{ background-position:100% 50%; } }

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
  min-height: 1.9rem;
}
.hero-tagline .typed-text { color: var(--accent); font-weight: 600; }
.cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  vertical-align: middle;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50%{ opacity:0; } }

.hero-desc {
  font-size: 0.97rem;
  color: var(--muted);
  margin: 0.9rem auto 2.2rem;
  max-width: 460px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-socials {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.social-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 6px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.social-pill:hover {
  color: var(--accent);
  border-color: var(--border);
  background: rgba(79,158,255,0.06);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #3b82f6 100%);
  color: #fff;
}
.btn-primary:hover { box-shadow: 0 8px 28px rgba(79,158,255,0.4); }

.btn-teal {
  background: linear-gradient(135deg, var(--teal) 0%, #00a888 100%);
  color: #040c1a;
  font-weight: 700;
}
.btn-teal:hover { box-shadow: 0 8px 28px rgba(0,212,170,0.38); }

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

.link-btn,
.cert-verify-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 20px;
  text-decoration: none;
  background: rgba(79, 158, 255, 0.1);
  border: 1px solid rgba(79, 158, 255, 0.25);
  color: var(--accent);
  transition: background 0.2s, border-color 0.2s;
  text-align: center;
}
.link-btn:hover,
.cert-verify-btn:hover {
  background: rgba(79, 158, 255, 0.2);
  border-color: var(--accent);
}

/* ============================================================
   PAGE WRAPPER (non-hero pages)
   ============================================================ */
.page-wrapper { padding-top: 64px; }

.page-hero {
  padding: 5rem clamp(1rem,4vw,3rem) 3rem;
  max-width: 1100px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border-soft);
}
.page-hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 700;
  margin-bottom: 0.6rem;
}
.page-hero-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
}
.page-hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero-sub {
  font-size: 1rem;
  color: var(--muted);
  margin-top: 0.6rem;
  max-width: 600px;
}

/* ============================================================
   SECTION
   ============================================================ */
.section {
  padding: 4.5rem clamp(1rem,4vw,3rem);
  max-width: 1100px;
  margin: 0 auto;
}

.section-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.5rem,3.5vw,2rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-rule {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--teal));
  border-radius: 3px;
  margin-bottom: 2.5rem;
}

/* ============================================================
   GLASS CARD (generic)
   ============================================================ */
.glass-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}
.glass-card:hover {
  border-color: rgba(79,158,255,0.38);
  box-shadow: var(--glow-blue), var(--shadow);
  transform: translateY(-4px);
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ============================================================
   HOME – SUMMARY
   ============================================================ */
.summary-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2.5rem;
  backdrop-filter: blur(12px);
}
.summary-card p {
  font-size: 1.05rem;
  color: var(--text-dim);
  line-height: 1.8;
}
.summary-card p strong { color: var(--text); }

/* Stats row */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem 1rem;
  text-align: center;
  transition: transform 0.3s, border-color 0.3s;
}
.stat-card:hover { transform: translateY(-3px); border-color: rgba(79,158,255,0.35); }
.stat-number {
  font-family: var(--font-head);
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  line-height: 1.1;
}
.stat-label { font-size: 0.8rem; color: var(--muted); margin-top: 5px; line-height: 1.3; }

/* ============================================================
   HOME – AWARDS
   ============================================================ */
.awards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.award-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  transition: border-color 0.3s, transform 0.3s;
}
.award-card:hover { border-color: rgba(79,158,255,0.35); transform: translateY(-3px); }
.award-icon {
  font-size: 1.6rem;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(79,158,255,0.08);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.award-title {
  font-family: var(--font-head);
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--text);
}
.award-meta { font-size: 0.8rem; color: var(--muted); margin-top: 2px; }
.award-desc { font-size: 0.875rem; color: var(--text-dim); margin-top: 6px; line-height: 1.5; }

/* ============================================================
   PROJECTS PAGE
   ============================================================ */
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 2.5rem;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.project-card:hover {
  border-color: rgba(79,158,255,0.4);
  box-shadow: var(--shadow), var(--glow-blue);
}

.project-header {
  padding: 2rem 2rem 1.5rem;
  border-bottom: 1px solid var(--border-soft);
  position: relative;
}
.project-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--teal));
}
.project-header.purple-top::before {
  background: linear-gradient(90deg, var(--purple), var(--accent));
}

.project-type {
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.project-title-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 0.3rem;
}
.project-logo {
  height: 40px;
  width: auto;
  object-fit: contain;
  border-radius: 8px;
}
.project-title {
  font-family: var(--font-head);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text);
}
.project-title a { color: inherit; text-decoration: none; transition: color 0.2s; }
.project-title a:hover { color: var(--accent); }
.project-date { font-size: 0.83rem; color: var(--muted); }

.project-body { padding: 1.75rem 2rem 0; }
.project-desc {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

/* Tech tags */
.tech-stack { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 1.5rem; }
.tag {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 11px;
  border-radius: 20px;
  letter-spacing: 0.2px;
  text-decoration: none;
}
a.tag:hover { opacity: 0.8; }
.tag-blue   { background:rgba(79,158,255,0.12); color:var(--accent);  border:1px solid rgba(79,158,255,0.25); }
.tag-teal   { background:rgba(0,212,170,0.1);   color:var(--teal);   border:1px solid rgba(0,212,170,0.22); }
.tag-purple { background:rgba(155,109,255,0.1); color:var(--purple); border:1px solid rgba(155,109,255,0.22); }
.tag-amber  { background:rgba(255,169,77,0.1);  color:var(--amber);  border:1px solid rgba(255,169,77,0.22); }
.tag-gray   { background:rgba(90,105,125,0.14); color:var(--text-dim);border:1px solid rgba(90,105,125,0.2); }

/* Feature list */
.features-heading {
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}
.feature-list { list-style: none; display: grid; gap: 0.65rem; margin-bottom: 1.5rem; }
.feature-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.55;
}
.feature-list li::before { content:'▸'; color:var(--teal); position:absolute; left:0; top:0.175em; }
.feature-list li strong { color: var(--text); }

/* Project metrics bar */
.metrics-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 13px;
  border-radius: 20px;
  background: rgba(0,212,170,0.08);
  border: 1px solid rgba(0,212,170,0.18);
  color: var(--teal);
}

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

/* two-col features on large screens */
.features-2col { columns: 2; column-gap: 2rem; }
.features-2col li { break-inside: avoid; }

/* ============================================================
   CERTIFICATIONS
   ============================================================ */
.cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.cert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}
.cert-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
}
.cert-card:hover {
  border-color: rgba(79,158,255,0.38);
  box-shadow: var(--shadow), var(--glow-blue);
  transform: translateY(-4px);
}
.cert-issuer {
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.cert-title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.cert-title a { color: inherit; text-decoration: none; }
.cert-title a:hover { color: var(--accent); }
.cert-date { font-size: 0.8rem; color: var(--muted); margin-bottom: 0.9rem; }
.cert-desc { font-size: 0.875rem; color: var(--text-dim); line-height: 1.6; }

/* ============================================================
   EXPERIENCE TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 2.25rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 6px; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--teal) 70%, transparent);
}
.timeline-item { position: relative; margin-bottom: 2.75rem; }
.timeline-dot {
  position: absolute;
  left: -2.55rem;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2.5px solid var(--bg);
  box-shadow: 0 0 0 3px rgba(79,158,255,0.28);
}
.timeline-date {
  font-size: 0.76rem;
  color: var(--teal);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
.timeline-title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.2rem;
}
.timeline-sub { font-size: 0.875rem; color: var(--muted); margin-bottom: 0.8rem; }
.timeline-sub a { color: var(--accent); text-decoration: none; }
.timeline-sub a:hover { text-decoration: underline; }

.timeline-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.35rem 1.5rem;
  backdrop-filter: blur(8px);
}
.timeline-list { list-style: none; display: grid; gap: 0.6rem; }
.timeline-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.55;
}
.timeline-list li::before { content:'▸'; color:var(--accent); position:absolute; left:0; top:0.175em; }
.timeline-list li strong { color: var(--text); }
.timeline-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(255,169,77,0.1);
  border: 1px solid rgba(255,169,77,0.22);
  color: var(--amber);
  margin-top: 0.75rem;
}

/* ============================================================
   EDUCATION
   ============================================================ */
.edu-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem 2rem 2rem 2.5rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s, transform 0.3s;
}
.edu-card:hover { border-color: rgba(79,158,255,0.35); transform: translateY(-3px); }
.edu-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--teal));
  border-radius: 16px 0 0 16px;
}
.edu-degree {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}
.edu-school { font-size: 0.9rem; color: var(--accent); font-weight: 500; margin-bottom: 0.2rem; }
.edu-dates  { font-size: 0.82rem; color: var(--muted); margin-bottom: 1.1rem; }
.edu-details { display: grid; gap: 0.6rem; }
.edu-detail {
  font-size: 0.875rem;
  color: var(--text-dim);
  display: flex;
  gap: 8px;
  align-items: flex-start;
  line-height: 1.55;
}
.edu-detail::before { content:'▸'; color:var(--teal); flex-shrink:0; margin-top:2px; }
.edu-detail strong { color: var(--text); }

/* ============================================================
   SKILLS PAGE
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.skill-group {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s;
}
.skill-group:hover { border-color: rgba(79,158,255,0.3); }

.skill-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1.25rem;
}
.skill-group-icon {
  font-size: 1.2rem;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(79,158,255,0.08);
  border: 1px solid var(--border);
  border-radius: 10px;
  flex-shrink: 0;
}
.skill-group-name {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.skill-tag {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(79,158,255,0.07);
  border: 1px solid rgba(79,158,255,0.14);
  color: var(--text-dim);
  cursor: default;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}
.skill-tag:hover {
  background: rgba(79,158,255,0.15);
  color: var(--text);
  border-color: rgba(79,158,255,0.4);
  transform: translateY(-2px);
}
.skill-tag.star {
  background: rgba(0,212,170,0.08);
  border-color: rgba(0,212,170,0.2);
  color: var(--teal);
}
.skill-tag.star:hover {
  background: rgba(0,212,170,0.18);
  border-color: rgba(0,212,170,0.45);
}

/* proficiency legend strip */
.skills-legend {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.legend-item { display: flex; align-items: center; gap: 7px; font-size: 0.83rem; color: var(--muted); }
.legend-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.legend-dot.primary { background: var(--teal); }
.legend-dot.normal  { background: var(--accent); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 2.5rem clamp(1rem,4vw,3rem);
  text-align: center;
  margin-top: 3rem;
  background: rgba(0,0,0,0.18);
}
.footer-name {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
}
.footer-links {
  display: flex;
  gap: 1.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-copy { font-size: 0.78rem; color: var(--muted); }

/* ============================================================
   MISC UTILITIES
   ============================================================ */
a { color: var(--accent); }
code {
  font-size: 0.87em;
  background: rgba(79,158,255,0.1);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--teal);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .stats-grid      { grid-template-columns: repeat(2,1fr); }
  .skills-grid     { grid-template-columns: 1fr; }
  .features-2col   { columns: 1; }
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(6,12,26,0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 1.5rem;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .awards-grid  { grid-template-columns: 1fr; }
  .cert-grid    { grid-template-columns: 1fr; }
  .hero-name    { font-size: 2.2rem; }
  .hero-actions { gap: 10px; }
  .project-header, .project-body { padding-left: 1.25rem; padding-right: 1.25rem; }
  .project-footer { padding: 1rem 1.25rem; }
  .timeline { padding-left: 1.75rem; }
  .timeline-dot { left: -2rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .btn { padding: 10px 18px; font-size: 0.85rem; }
}