/* ===== CSS Variables ===== */
:root {
  --bg: #050d1a;
  --bg2: #080f1f;
  --bg3: #0a1628;
  --panel: #0d1f38;
  --panel2: #0f2540;
  --accent: #00e5ff;
  --accent2: #00ff9d;
  --accent3: #ff6b35;
  --text: #c8d8e8;
  --text-dim: #6a8099;
  --border: rgba(0, 229, 255, 0.15);
  --border-bright: rgba(0, 229, 255, 0.4);
  --glow: 0 0 20px rgba(0, 229, 255, 0.3);
  --glow-strong: 0 0 40px rgba(0, 229, 255, 0.5);
  --font-display: 'Orbitron', monospace;
  --font-mono: 'Share Tech Mono', monospace;
  --font-body: 'Exo 2', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  cursor: none;
}

/* ===== Custom Cursor (desktop only) ===== */
body::before {
  content: '';
  position: fixed;
  width: 12px; height: 12px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  mix-blend-mode: screen;
  transition: transform 0.1s;
  transform: translate(var(--cx, 0), var(--cy, 0));
}

@media (pointer: coarse) {
  body { cursor: auto; }
  body::before { display: none; }
}

/* ===== Canvas ===== */
#circuitCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  touch-action: none;
  opacity: 0.18;
}

a { text-decoration: none; color: inherit; }

.container {
  width: 92%;
  max-width: 1200px;
  margin: auto;
  position: relative;
  z-index: 2;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ===== Scroll Progress Bar ===== */
.scroll-progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent2), var(--accent), var(--accent3));
  z-index: 99999;
  transition: width 0.08s linear;
  pointer-events: none;
  box-shadow: 0 0 10px var(--accent), 0 0 20px rgba(0,229,255,0.4);
}

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  background: rgba(5, 13, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s, box-shadow 0.3s;
}
.navbar.shrink {
  padding: 10px 0;
  box-shadow: 0 0 30px rgba(0,229,255,0.1);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 2px;
}
.logo-bracket { color: var(--accent); }
.logo-text { color: #fff; }
.logo-dot { color: var(--accent2); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 8px;
}
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 4px;
  transition: all 0.3s;
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent);
  background: rgba(0, 229, 255, 0.07);
}
.nav-num { color: var(--accent2); margin-right: 4px; font-size: 0.72rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 1001;
  position: relative;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: 0.3s;
}
/* Hamburger → X animation */
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  backdrop-filter: blur(2px);
}
.nav-overlay.open { display: block; }

/* ===== Section Shared ===== */
section {
  position: relative;
  z-index: 2;
  padding: 100px 0;
}
.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 60px;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent2);
}
.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
}
.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border-bright), transparent);
}

/* ===== Home ===== */
.home-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 80px;
  background: radial-gradient(ellipse at 50% 30%, rgba(0,229,255,0.05) 0%, transparent 70%);
}
.home-content { position: relative; z-index: 2; }

.home-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,255,157,0.08);
  border: 1px solid rgba(0,255,157,0.25);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 30px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent2);
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent2);
  animation: pulse-dot 1.5s infinite;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 0 0 rgba(0,255,157,0.5); }
  50% { box-shadow: 0 0 0 6px rgba(0,255,157,0); }
}

.glitch-wrapper { margin-bottom: 20px; }
.glitch {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: 3px;
  position: relative;
  display: inline-block;
}
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}
.glitch::before {
  color: var(--accent);
  animation: glitch1 3.5s infinite;
  clip-path: polygon(0 30%, 100% 30%, 100% 50%, 0 50%);
}
.glitch::after {
  color: var(--accent3);
  animation: glitch2 3.5s infinite;
  clip-path: polygon(0 60%, 100% 60%, 100% 80%, 0 80%);
}
@keyframes glitch1 {
  0%,94%,100% { transform: none; opacity: 0; }
  95% { transform: translateX(-3px); opacity: 0.7; }
  97% { transform: translateX(3px); opacity: 0.7; }
}
@keyframes glitch2 {
  0%,92%,100% { transform: none; opacity: 0; }
  93% { transform: translateX(3px); opacity: 0.7; }
  96% { transform: translateX(-3px); opacity: 0.7; }
}

.typewriter-wrap {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 20px;
  min-height: 28px;
}
.tw-prefix { color: var(--accent2); }
.tw-cursor { animation: blink 0.8s step-end infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.home-tagline {
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 480px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.home-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 13px 28px;
  border-radius: 4px;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
  text-transform: uppercase;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(0,229,255,0.3);
}
.btn-primary:hover {
  background: #fff;
  box-shadow: 0 0 40px rgba(0,229,255,0.6);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-bright);
}
.btn-outline:hover {
  background: rgba(0,229,255,0.08);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }
.btn-icon { font-size: 1rem; }

.home-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-val {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.stat-divider {
  width: 1px; height: 40px;
  background: var(--border);
}

.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 3px;
  animation: float 2s ease-in-out infinite;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: grow-line 2s ease-in-out infinite;
}
@keyframes float { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(6px)} }
@keyframes grow-line { 0%,100%{opacity:1} 50%{opacity:0.3} }

/* ===== About ===== */
.about-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg3) 100%);
}
.about-box {
  display: flex;
  gap: 60px;
  align-items: center;
  flex-wrap: wrap;
}
.about-img-wrap {
  position: relative;
  flex-shrink: 0;
}
.hex-frame {
  width: 220px; height: 220px;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  overflow: hidden;
  border: 2px solid var(--border-bright);
  box-shadow: var(--glow-strong);
  animation: morph 8s ease-in-out infinite;
}
@keyframes morph {
  0%,100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
  25% { border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%; }
  50% { border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%; }
  75% { border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%; }
}
.profile-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.8);
}
.about-badge {
  position: absolute;
  bottom: -16px; right: -16px;
  background: var(--panel);
  border: 1px solid var(--border-bright);
  border-radius: 8px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  white-space: nowrap;
  display: flex;
  gap: 6px;
  align-items: center;
}
.badge-icon { font-size: 1rem; animation: spin 4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.about-text { flex: 1; min-width: 280px; }
.about-greeting {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 16px;
}
.wave { display: inline-block; animation: wave 1.5s infinite; }
@keyframes wave { 0%,100%{transform:rotate(0)} 30%{transform:rotate(20deg)} 60%{transform:rotate(-10deg)} }

.about-text p {
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1rem;
}
.about-text strong { color: var(--accent); font-weight: 600; }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.tag {
  background: rgba(0, 229, 255, 0.07);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 0.82rem;
  color: var(--accent);
  font-family: var(--font-mono);
  transition: all 0.3s;
}
.tag:hover {
  background: rgba(0,229,255,0.15);
  border-color: var(--border-bright);
}

/* ===== Skills ===== */
.skills-section {
  background: var(--bg2);
}
.skills-categories {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.skill-category {}
.cat-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cat-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.cat-icon { font-size: 1.1rem; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.skill-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background: var(--accent);
  transition: height 0.4s;
}
.skill-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}
.skill-card:hover::before { height: 100%; }
.skill-icon { font-size: 1.5rem; margin-bottom: 8px; }
.skill-name {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--accent);
  margin-bottom: 10px;
}
.skill-bar {
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  width: 0;
  border-radius: 3px;
  background: linear-gradient(to right, var(--accent2), var(--accent));
  transition: width 1.4s cubic-bezier(0.4,0,0.2,1);
}
.skill-card.animated .skill-fill { width: var(--w); }

/* ===== Projects ===== */
.projects-section {
  background: linear-gradient(180deg, var(--bg3) 0%, var(--bg) 100%);
  padding-right: 0;
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  transition: all 0.35s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.project-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.project-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), var(--glow);
}
.project-card:hover::after { opacity: 1; }
.project-card.featured {
  border-color: rgba(0,229,255,0.3);
  background: linear-gradient(135deg, var(--panel) 0%, rgba(0,229,255,0.04) 100%);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.card-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}
.card-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent2);
  background: rgba(0,255,157,0.08);
  border: 1px solid rgba(0,255,157,0.2);
  padding: 3px 10px;
  border-radius: 100px;
}
.featured-tag {
  color: var(--accent);
  background: rgba(0,229,255,0.08);
  border-color: rgba(0,229,255,0.2);
}
.card-icon { font-size: 2rem; }
.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: #fff;
  font-weight: 600;
  letter-spacing: 1px;
}
.project-card p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
  flex: 1;
}
.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.card-tech span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  background: rgba(0,229,255,0.06);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 4px;
}
.card-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s, color 0.2s;
  margin-top: 4px;
}
.card-btn:hover { gap: 10px; color: #fff; }
.card-btn-secondary {
  color: var(--text-dim);
  font-size: 0.75rem;
}
.card-btn-secondary:hover { color: var(--accent2); gap: 8px; }
.card-btn-github {
  color: #00ff9d;
}
.card-btn-github:hover { color: #ffffff; gap: 10px; }
.project-card .card-btn + .card-btn { margin-left: 12px; }

/* ===== Project Filters ===== */
.project-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}
.proj-filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  padding: 7px 18px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.25s;
}
.proj-filter-btn:hover {
  border-color: var(--border-bright);
  color: var(--accent);
  box-shadow: 0 0 8px rgba(0,229,255,0.2);
}
.proj-filter-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 700;
  box-shadow: 0 0 14px rgba(0,229,255,0.35);
}
.project-card.hidden {
  display: none;
}

/* ===== Achievements / Certificates ===== */
.achievements-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg3) 100%);
}

.cert-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.cert-filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 1px;
  padding: 7px 18px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.25s;
  text-transform: uppercase;
}
.cert-filter-btn:hover {
  border-color: var(--border-bright);
  color: var(--accent);
}
.cert-filter-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 700;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.cert-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.cert-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.cert-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.3), var(--glow);
}
.cert-card:hover::before { opacity: 1; }
.cert-card[data-cat="cisco"] { --card-color: #00a0d1; }
.cert-card[data-cat="ibm"]   { --card-color: #0f62fe; }
.cert-card[data-cat="google"]{ --card-color: #34a853; }
.cert-card[data-cat="other"] { --card-color: var(--accent2); }
.cert-card:hover { border-color: var(--card-color, var(--border-bright)); }

.cert-badge {
  flex-shrink: 0;
  width: 64px; height: 64px;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(255,255,255,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.cert-badge img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.cert-badge-fallback {
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%; height: 100%;
}

.cert-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  width: fit-content;
}
.cert-issuer.cisco  { color: #00a0d1; background: rgba(0,160,209,0.1); border: 1px solid rgba(0,160,209,0.2); }
.cert-issuer.ibm    { color: #6ea6ff; background: rgba(110,166,255,0.1); border: 1px solid rgba(110,166,255,0.2); }
.cert-issuer.google { color: #34a853; background: rgba(52,168,83,0.1); border: 1px solid rgba(52,168,83,0.2); }
.cert-issuer.other  { color: var(--accent2); background: rgba(0,255,157,0.08); border: 1px solid rgba(0,255,157,0.2); }

.cert-info h3 {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}
.cert-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}
.cert-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin-top: 2px;
}
.cert-actions { margin-top: 6px; }
.cert-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  transition: color 0.2s, letter-spacing 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.cert-btn:hover { color: #fff; letter-spacing: 0.5px; }

/* hidden filter state */
.cert-card.hidden {
  display: none;
}

/* Stats bar */
.cert-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.cert-stat { text-align: center; }
.cs-val {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
}
.cs-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--font-mono);
}
.cert-stat-div {
  width: 1px; height: 40px;
  background: var(--border);
}

/* ===== GitHub Stats ===== */
.github-stats-section {
  background: var(--bg2);
  padding: 100px 0 80px;
}
.gh-layout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  margin-bottom: 32px;
  align-items: start;
}
.gh-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.gh-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 18px;
  text-align: center;
  min-width: 110px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.gh-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent2), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}
.gh-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-3px);
  box-shadow: var(--glow);
}
.gh-card:hover::after { opacity: 1; }
.gh-card-icon { font-size: 1.4rem; margin-bottom: 8px; }
.gh-card-val {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.gh-card-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.gh-loading {
  font-size: 1.4rem;
  color: var(--text-dim);
  animation: blink 1s step-end infinite;
}

.gh-repos-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  height: 100%;
}
.gh-panel-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.gh-profile-link {
  font-size: 0.72rem;
  color: var(--accent2);
  transition: color 0.2s;
}
.gh-profile-link:hover { color: #fff; }

.gh-repo-list { display: flex; flex-direction: column; gap: 10px; }
.gh-repo-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.25s;
  text-decoration: none;
}
.gh-repo-item:hover {
  border-color: var(--border-bright);
  background: var(--panel2);
}
.gh-repo-name {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}
.gh-repo-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.gh-repo-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
}
.gh-repo-star, .gh-repo-fork {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  white-space: nowrap;
}
.gh-repo-lang {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(0,229,255,0.07);
  color: var(--accent);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.gh-repo-skeleton {
  height: 52px;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--panel) 25%, var(--panel2) 50%, var(--panel) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.gh-contrib-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
}
.gh-contrib-img-wrap {
  border-radius: 8px;
  overflow: hidden;
  background: #0d1117;
  padding: 10px;
}
.gh-contrib-img {
  width: 100%;
  display: block;
  border-radius: 6px;
  filter: brightness(0.95);
}
.gh-error {
  text-align: center;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 20px;
}

/* ===== Robot Mascot ===== */
.robot-mascot {
  position: fixed;
  bottom: 90px;
  left: 20px;
  z-index: 999;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  user-select: none;
  animation: robot-bob 3s ease-in-out infinite;
}
.robot-svg {
  width: 80px;
  height: 100px;
  filter: drop-shadow(0 0 8px rgba(0,229,255,0.4));
  transition: filter 0.3s;
  overflow: visible;
}
.robot-mascot:hover .robot-svg {
  filter: drop-shadow(0 0 18px rgba(0,229,255,0.8));
}

/* Idle bob */
@keyframes robot-bob {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}

/* Antenna pulse */
.robot-antenna-dot {
  animation: antenna-pulse 1.8s ease-in-out infinite;
}
@keyframes antenna-pulse {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.2; }
}

/* LED flicker */
.robot-led1 { animation: led-flick 2.1s ease-in-out infinite; }
.robot-led2 { animation: led-flick 1.7s ease-in-out infinite 0.4s; }
.robot-led3 { animation: led-flick 2.5s ease-in-out infinite 0.8s; }
@keyframes led-flick {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.2; }
}

/* Pupils — smooth tracking transition */
.robot-pupil-l,
.robot-pupil-r {
  transition: cx 0.12s ease, cy 0.12s ease;
}
.robot-pupil-l-shine,
.robot-pupil-r-shine {
  transition: cx 0.12s ease, cy 0.12s ease;
  pointer-events: none;
}

/* Arm wave on hover */
.robot-mascot:hover .robot-arm-right {
  transform-origin: 74.5px 60px;
  animation: arm-wave 0.5s ease-in-out infinite alternate;
}
@keyframes arm-wave {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-22deg); }
}

/* Mouth glow on hover/talking */
.robot-mascot:hover .robot-mouth,
.robot-mascot.talking .robot-mouth {
  fill: var(--accent2);
}

/* Speech bubble */
.robot-speech {
  background: var(--panel);
  border: 1px solid var(--border-bright);
  border-radius: 10px;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  white-space: nowrap;
  box-shadow: var(--glow);
  opacity: 0;
  transform: translateY(6px) scale(0.95);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  position: relative;
  max-width: 200px;
  white-space: normal;
  text-align: center;
}
.robot-speech::after {
  content: '';
  position: absolute;
  bottom: -7px; left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--border-bright);
}
.robot-mascot:hover .robot-speech,
.robot-mascot.talking .robot-speech {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Section-aware glow color change */
.robot-mascot.section-projects .robot-svg { filter: drop-shadow(0 0 12px rgba(0,255,157,0.6)); }
.robot-mascot.section-contact  .robot-svg { filter: drop-shadow(0 0 12px rgba(255,107,53,0.6)); }
.robot-mascot.section-achievements .robot-svg { filter: drop-shadow(0 0 12px rgba(0,229,255,0.7)); }

@media (max-width: 768px) {
  .robot-mascot { left: 10px; bottom: 80px; }
  .robot-svg { width: 60px; height: 75px; }
  .gh-layout { grid-template-columns: 1fr; }
  .gh-cards { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 500px) {
  .gh-cards { grid-template-columns: 1fr 1fr; }
  .robot-speech { font-size: 0.65rem; padding: 5px 10px; }
}

/* ===== Contact ===== */
.contact-section {
  background: var(--bg2);
}
.contact-intro {
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 600px;
  line-height: 1.8;
  margin-bottom: 50px;
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
}
.panel-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.contact-items { display: flex; flex-direction: column; gap: 12px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  transition: all 0.3s;
}
.contact-item:hover {
  border-color: var(--border-bright);
  background: var(--panel2);
  transform: translateX(4px);
}
.ci-icon { font-size: 1.5rem; }
.ci-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 2px;
}
.ci-val {
  display: block;
  font-size: 0.88rem;
  color: var(--accent);
}
.location-badge {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 10px 14px;
  background: var(--panel);
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ===== Contact Form ===== */
.contact-form {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px !important;
  -webkit-border-radius: 12px !important;
  -moz-border-radius: 12px !important;
  padding: 32px;
  overflow: hidden;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.form-group input, .form-group textarea {
  background: var(--bg) !important;
  border: 1px solid var(--border) !important;
  border-radius: 6px !important;
  padding: 12px 16px !important;
  font-family: var(--font-body), sans-serif !important;
  font-size: 0.9rem !important;
  color: var(--text) !important;
  transition: all 0.3s;
  outline: none !important;
  resize: vertical;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  box-sizing: border-box;
  width: 100%;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.1);
}
.form-group input::placeholder, .form-group textarea::placeholder {
  color: var(--text-dim);
}

/* ===== Form Status ===== */
.form-status {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-align: center;
  padding: 10px;
  border-radius: 6px;
  margin-top: 4px;
  min-height: 20px;
  transition: all 0.3s;
}
.form-status.success {
  color: var(--accent2);
  background: rgba(0, 255, 157, 0.07);
  border: 1px solid rgba(0, 255, 157, 0.2);
}
.form-status.error {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.07);
  border: 1px solid rgba(255, 107, 107, 0.2);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 30px 0;
  position: relative;
  z-index: 2;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 4px;
}
.footer-copy { font-size: 0.82rem; color: var(--text-dim); }
.footer-made { font-size: 0.78rem; color: var(--text-dim); font-family: var(--font-mono); }

/* ===== Back to Top ===== */
#backToTop {
  position: fixed;
  bottom: 30px; right: 30px;
  background: var(--accent);
  color: var(--bg);
  width: 44px; height: 44px;
  border-radius: 8px;
  font-size: 1.2rem;
  font-weight: bold;
  border: none;
  cursor: pointer;
  display: none;
  z-index: 999;
  transition: all 0.3s;
  box-shadow: 0 0 20px rgba(0,229,255,0.4);
}
#backToTop:hover {
  background: #fff;
  transform: translateY(-3px);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 90px; right: 30px;
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent2);
  display: none;
  z-index: 9999;
  box-shadow: var(--glow);
  animation: slide-in 0.3s ease;
}
@keyframes slide-in { from { transform: translateX(40px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; }
  .about-box { flex-direction: column; align-items: center; text-align: center; }
  .about-tags { justify-content: center; }
}

@media (max-width: 768px) {
  section { padding: 70px 0; }

  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: 0; right: 0;
    width: min(280px, 80vw);
    height: 100vh;
    background: rgba(5,13,26,0.98);
    flex-direction: column;
    padding: 80px 30px 30px;
    border-left: 1px solid var(--border);
    gap: 4px;
    z-index: 999;
    overflow-y: auto;
    box-shadow: -8px 0 32px rgba(0,0,0,0.5);
  }
  .nav-links.open { display: flex; }
  .nav-link {
    font-size: 1rem;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    width: 100%;
  }

  /* Home section */
  .home-section { padding-top: 70px; }
  .home-tagline { font-size: 0.92rem; max-width: 100%; padding: 0 8px; }
  .home-stats { gap: 12px; }
  .stat-divider { height: 28px; }
  .stat-val { font-size: 1.3rem; }

  /* About section */
  .about-img-wrap { margin-bottom: 36px; }
  .hex-frame { width: 180px; height: 180px; }
  .about-badge {
    bottom: -14px; right: -8px;
    font-size: 0.68rem;
    padding: 6px 10px;
  }
  .about-text { min-width: unset; }
  .about-text p { font-size: 0.93rem; }

  /* Skills */
  .form-row { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .section-title { font-size: 1.5rem; }

  /* Contact */
  .contact-intro { font-size: 0.92rem; }
}

@media (max-width: 480px) {
  section { padding: 60px 0; }

  .section-header { gap: 10px; margin-bottom: 40px; }
  .section-title { font-size: 1.3rem; }

  .skills-grid { grid-template-columns: 1fr; }
  .home-buttons { flex-direction: column; align-items: stretch; }
  .home-buttons .btn { justify-content: center; }

  .contact-form { padding: 20px 16px; }
  .contact-item { padding: 12px; gap: 12px; }
  .ci-val { font-size: 0.8rem; word-break: break-all; }

  #backToTop { right: 16px; bottom: 16px; }
  .toast { right: 12px; left: 12px; bottom: 80px; font-size: 0.78rem; }

  .home-stats { gap: 10px; }
  .stat-val { font-size: 1.15rem; }
  .stat-label { font-size: 0.65rem; }
  .stat-divider { height: 24px; }

  .project-card { padding: 20px 16px; }
  .card-tag { font-size: 0.6rem; max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  
  .hex-frame { width: 160px; height: 160px; }
  .about-badge { font-size: 0.65rem; right: -4px; }
}