/* ── TOKENS ─────────────────────────────────────── */
:root {
  --bg:        #0A0F1E;
  --bg2:       #0E1528;
  --indigo:    #6366F1;
  --indigo-l:  #818CF8;
  --cyan:      #22D3EE;
  --emerald:   #10B981;
  --rose:      #F43F5E;
  --amber:     #F59E0B;
  --text:      #F8FAFC;
  --muted:     #94A3B8;
  --glass-bg:  rgba(255,255,255,0.04);
  --glass-bd:  rgba(255,255,255,0.10);
  --glass-hov: rgba(255,255,255,0.08);
  --radius:    16px;
  --radius-sm: 8px;
  --shadow:    0 8px 32px rgba(0,0,0,0.4);
  --glow:      0 0 24px rgba(99,102,241,0.35);
  --font-main: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* ── RESET ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── CANVAS ─────────────────────────────────────── */
#particle-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

/* ── APP WRAPPER ────────────────────────────────── */
#app { position: relative; z-index: 1; }

/* ── NAV ────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 5vw, 3rem);
  height: 64px;
  background: rgba(10,15,30,0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-bd);
  transition: background 0.3s;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: 0.05em;
  text-decoration: none;
}
.nav-links {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 2px;
  background: var(--indigo);
  transform: scaleX(0);
  transition: transform 0.25s;
  border-radius: 2px;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: rgba(10,15,30,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-bd);
  padding: 1.5rem 2rem;
  z-index: 99;
  flex-direction: column;
  gap: 1.25rem;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  color: var(--muted);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-mobile-menu a:hover { color: var(--text); }

/* ── SECTIONS ───────────────────────────────────── */
section {
  padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 8vw, 6rem);
  max-width: 1200px;
  margin: 0 auto;
}

/* ── HERO ────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding-top: 80px;
}
.hero-info { flex: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.35);
  border-radius: 100px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--indigo-l);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}
.hero-badge span { width: 7px; height: 7px; background: var(--emerald); border-radius: 50%; animation: pulse 1.8s infinite; }
.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 30%, var(--indigo-l) 70%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-role {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--cyan);
  margin-bottom: 1.25rem;
  letter-spacing: 0.06em;
}
.hero-intro {
  color: var(--muted);
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.75;
}
.hero-internship {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  font-size: 0.85rem;
  color: var(--text);
  margin-bottom: 2rem;
}
.hero-internship .dot { color: var(--amber); }
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--indigo), var(--cyan));
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 20px rgba(99,102,241,0.3);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: var(--glow); }
.btn-ghost {
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  font-weight: 500;
  font-size: 0.9rem;
  border: 1px solid var(--glass-bd);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.btn-ghost:hover { background: var(--glass-hov); border-color: var(--indigo); transform: translateY(-2px); }
.hero-image-wrap {
  flex-shrink: 0;
  position: relative;
  width: clamp(200px, 28vw, 320px);
  height: clamp(200px, 28vw, 320px);
}
.hero-image-ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  background: conic-gradient(var(--indigo), var(--cyan), var(--emerald), var(--indigo));
  animation: spin 6s linear infinite;
  opacity: 0.7;
}
.hero-image-ring::before {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--bg);
}
.hero-img {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255,255,255,0.08);
  z-index: 1;
  background: linear-gradient(135deg, var(--indigo), var(--bg2));
}
.hero-avatar-fallback {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(34,211,238,0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(3rem, 8vw, 5rem);
  color: var(--indigo-l);
  border: 3px solid rgba(255,255,255,0.08);
}

/* ── SECTION HEADER ─────────────────────────────── */
.section-header { margin-bottom: 3rem; }
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
}
.section-title span { color: var(--indigo-l); }
.section-line {
  margin-top: 1rem;
  height: 3px;
  width: 48px;
  background: linear-gradient(90deg, var(--indigo), var(--cyan));
  border-radius: 2px;
}

/* ── PROJECT CARDS ──────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 1.75rem;
}
.project-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--indigo), var(--cyan));
  transform: scaleX(0);
  transition: transform 0.35s;
  transform-origin: left;
}
.project-card:hover { transform: translateY(-6px); border-color: rgba(99,102,241,0.45); box-shadow: var(--glow); }
.project-card:hover::before { transform: scaleX(1); }
.project-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--indigo-l);
  letter-spacing: 0.1em;
  opacity: 0.6;
}
.project-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}
.project-desc {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.7;
  flex: 1;
}
.project-tools { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tool-tag {
  padding: 0.2rem 0.6rem;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 100px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--indigo-l);
  white-space: nowrap;
}
.project-actions { display: flex; gap: 0.75rem; margin-top: 0.5rem; }
.btn-view {
  flex: 1;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--indigo), var(--indigo-l));
  color: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: opacity 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}
.btn-view:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-icon {
  padding: 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  color: var(--muted);
  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
  font-size: 0.85rem;
}
.btn-icon:hover { color: var(--text); border-color: var(--cyan); transform: translateY(-1px); }

/* ── CERT CARDS ──────────────────────────────────── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 2rem;
}
.cert-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  border-radius: var(--radius);
  padding: 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}
.cert-card:hover { transform: translateY(-5px); box-shadow: 0 0 30px rgba(34,211,238,0.2); }
.cert-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.cert-icon.gold { background: rgba(245,158,11,0.15); border: 2px solid rgba(245,158,11,0.4); }
.cert-icon.blue { background: rgba(99,102,241,0.15); border: 2px solid rgba(99,102,241,0.4); }
.cert-title { font-size: 1.15rem; font-weight: 600; }
.cert-sub { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }
.cert-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
}
.btn-view-doc {
  width: 100%;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, opacity 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.btn-view-doc:hover { transform: translateY(-2px); opacity: 0.9; }
.btn-view-doc.gold-btn { background: linear-gradient(135deg, var(--amber), #D97706); color: #fff; }
.btn-view-doc.blue-btn { background: linear-gradient(135deg, var(--indigo), var(--cyan)); color: #fff; }

/* ── MODAL ───────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.modal-overlay.hidden { display: none; }
.modal-box {
  background: var(--bg2);
  border: 1px solid var(--glass-bd);
  border-radius: var(--radius);
  width: 100%;
  max-width: 420px;
  padding: 2rem;
  position: relative;
  box-shadow: var(--shadow);
  animation: slideUp 0.3s ease;
}
.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  color: var(--muted);
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.85rem;
  transition: color 0.2s, background 0.2s;
  display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { color: var(--text); background: var(--glass-hov); }
.modal-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
.modal-sub { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.5rem; }
.modal-input-wrap { position: relative; margin-bottom: 1.25rem; }
.modal-input {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-bd);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  outline: none;
  transition: border-color 0.2s;
}
.modal-input:focus { border-color: var(--indigo); }
.modal-input.error { border-color: var(--rose); }
.modal-error { font-size: 0.8rem; color: var(--rose); margin-top: 0.4rem; display: none; }
.modal-error.show { display: block; }
.btn-modal-submit {
  width: 100%;
  padding: 0.8rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--indigo), var(--cyan));
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-modal-submit:hover { opacity: 0.9; transform: translateY(-1px); }
.modal-hint { font-size: 0.75rem; color: var(--muted); text-align: center; margin-top: 1rem; }

/* ── CONTACT SECTION ────────────────────────────── */
.social-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
}
.social-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1.3rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  min-width: 180px;
}
.social-card:hover { transform: translateY(-4px); border-color: var(--indigo); box-shadow: var(--glow); }
.social-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.social-label { font-size: 0.825rem; font-weight: 500; }
.social-handle { font-size: 0.72rem; color: var(--muted); font-family: var(--font-mono); }

/* ── FOOTER ──────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--glass-bd);
  padding: 2.5rem clamp(1rem, 8vw, 6rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  background: rgba(14,21,40,0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.footer-left { display: flex; flex-direction: column; gap: 0.35rem; }
.footer-logo { font-family: var(--font-mono); font-size: 0.9rem; color: var(--cyan); font-weight: 500; }
.footer-copy { font-size: 0.78rem; color: var(--muted); }
.footer-links { display: flex; gap: 1rem; }
.footer-link {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.footer-link:hover { color: var(--text); border-color: var(--indigo); transform: translateY(-2px); }

/* ── SCROLL REVEAL ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── ANIMATIONS ─────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── RESPONSIVE ─────────────────────────────────── */
@media (max-width: 768px) {
  .hero { flex-direction: column-reverse; text-align: center; padding-top: 100px; }
  .hero-intro { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-image-wrap { width: 180px; height: 180px; }
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .footer { justify-content: center; text-align: center; flex-direction: column; align-items: center; }
  .social-grid { justify-content: center; }
  .social-card { flex: 1 1 160px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}