:root {
  --bg: #060a12;
  --bg2: #0b1020;
  --surface: rgba(255, 255, 255, 0.06);
  --surface2: rgba(255, 255, 255, 0.10);
  --border: rgba(255, 255, 255, 0.12);
  --text: #eaf0ff;
  --muted: rgba(234, 240, 255, 0.72);
  --primary: #22d3ee;
  --primary2: #60a5fa;
  --primary3: #a78bfa;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 600px at 15% 0%, rgba(34, 211, 238, 0.14), transparent 55%),
    radial-gradient(900px 600px at 85% 10%, rgba(96, 165, 250, 0.12), transparent 60%),
    radial-gradient(900px 650px at 60% -10%, rgba(167, 139, 250, 0.10), transparent 58%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  line-height: 1.6;
}

a { color: inherit; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 18px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid var(--border);
  text-decoration: none;
  transform: translateY(-140%);
  transition: transform 150ms ease;
  z-index: 100;
}
.skip-link:focus { transform: translateY(0); outline: none; }

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 10, 18, 0.6);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.2px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.30), rgba(96, 165, 250, 0.26), rgba(167, 139, 250, 0.24));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  display: inline-flex;
  padding: 10px 12px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 800;
}

.nav-link:hover { background: var(--surface); color: var(--text); }
.nav-link[aria-current="page"] { background: var(--surface2); color: var(--text); }

/* Typography */
h1, h2, h3 { line-height: 1.15; }
h2 { font-size: 28px; margin: 0; }
h3 { font-size: 18px; margin: 0 0 10px; }
.muted { color: var(--muted); }
.note { margin: 12px 0 0; font-size: 13px; color: var(--muted); }

/* Layout */
.section { padding: 70px 0; }
.section-head { display: grid; gap: 6px; margin-bottom: 18px; }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* Cards */
.card {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  padding: 16px;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
  align-items: center;
  padding: 56px 18px 30px;
}

.hero-kicker {
  display: inline-flex;
  width: fit-content;
  margin: 0 0 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 800;
  font-size: 13px;
}

.hero-intro {
  margin: 0 0 10px;
  font-size: 54px;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.1;
}

.highlight {
  display: inline-block;
  background: linear-gradient(90deg, var(--primary), var(--primary2), var(--primary3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: fadeInUp 800ms cubic-bezier(0.16, 1, 0.3, 1) 300ms backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  margin: 0 0 12px;
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.8px;
  line-height: 1.15;
}

.hero-sub {
  margin: 0;
  max-width: 70ch;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.stat {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  padding: 12px;
}

.stat-value { margin: 0; font-size: 22px; font-weight: 950; letter-spacing: -0.3px; }
.stat-label { margin: 2px 0 0; color: var(--muted); font-weight: 800; font-size: 12px; }

.profile-card {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.10), rgba(96, 165, 250, 0.10), rgba(167, 139, 250, 0.08));
  box-shadow: var(--shadow);
  padding: 18px;
}

.profile-glow {
  position: absolute;
  inset: -80px;
  background:
    radial-gradient(circle at 25% 25%, rgba(34, 211, 238, 0.22), transparent 55%),
    radial-gradient(circle at 70% 35%, rgba(96, 165, 250, 0.18), transparent 60%),
    radial-gradient(circle at 55% 70%, rgba(167, 139, 250, 0.16), transparent 65%);
  filter: blur(18px);
}

.avatar {
  width: 124px;
  height: 124px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  position: relative;
}

.profile-title { margin: 14px 0 8px; color: var(--muted); font-weight: 800; position: relative; }
.profile-big { margin: 0; font-size: 22px; font-weight: 950; position: relative; letter-spacing: -0.4px; }
.profile-small { margin: 8px 0 0; color: var(--muted); position: relative; }

/* About */
.edu-list { display: grid; gap: 12px; }
.edu-item { padding: 12px; border-radius: 14px; border: 1px solid var(--border); background: rgba(255, 255, 255, 0.03); }
.edu-school { margin: 0 0 4px; font-weight: 950; letter-spacing: -0.2px; }

/* Workflow */
.workflow-icon-wrapper {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0 0 14px;
}

.workflow-icon-blue {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.20), rgba(96, 165, 250, 0.15));
  border: 1px solid rgba(34, 211, 238, 0.3);
}

.workflow-icon-red {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.20), rgba(220, 38, 38, 0.15));
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.workflow-icon-green {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.20), rgba(22, 163, 74, 0.15));
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.workflow-icon {
  width: 28px;
  height: 28px;
  color: var(--text);
}

.workflow-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: #060a12;
  font-size: 12px;
  font-weight: 950;
  display: grid;
  place-items: center;
  border: 2px solid var(--bg);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 6px;
}

/* Tech Stack */
.stack-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stack-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.stack-icon {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  flex: 0 0 34px;
}

.stack-fallback {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  font-weight: 950;
}

.stack-name { margin: 0; font-weight: 950; letter-spacing: -0.2px; }

/* Progress bars */
.progress { margin-top: 14px; }
.progress-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.progress-label { font-weight: 950; }
.progress-value { color: var(--muted); font-weight: 950; }

.progress-track {
  height: 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(34, 211, 238, 0.92), rgba(96, 165, 250, 0.84), rgba(167, 139, 250, 0.76));
  transition: width 1700ms cubic-bezier(.2,.8,.2,1);
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0%, rgba(255, 255, 255, 0.22) 40%, transparent 70%);
  transform: translateX(-60%);
  animation: sheen 2200ms ease-in-out infinite;
  opacity: 0.7;
}

@keyframes sheen {
  0% { transform: translateX(-70%); }
  100% { transform: translateX(70%); }
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.chip {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 900;
  font-size: 12px;
  white-space: nowrap;
}

.project-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }

/* Contact */
.contact-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.link {
  color: var(--text);
  text-decoration: none;
  font-weight: 950;
}

.link:hover { text-decoration: underline; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  text-decoration: none;
  font-weight: 950;
}

.btn:hover { background: rgba(255, 255, 255, 0.10); }

.btn.primary {
  background: linear-gradient(90deg, rgba(34, 211, 238, 0.88), rgba(96, 165, 250, 0.82), rgba(167, 139, 250, 0.78));
  border-color: rgba(255, 255, 255, 0.18);
}

.btn.primary:hover { filter: brightness(1.02); }

.btn.small { padding: 10px 12px; border-radius: 12px; font-size: 13px; }
button.btn { cursor: pointer; }

/* Focus */
:where(a, button):focus-visible {
  outline: 3px solid rgba(34, 211, 238, 0.38);
  outline-offset: 2px;
}

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0 22px; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 18px;
}

.footer-brand { margin: 0 0 6px; font-weight: 950; letter-spacing: -0.3px; }
.footer-head { margin: 0 0 10px; font-weight: 950; letter-spacing: -0.2px; }

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 900;
}

.footer-links a:hover { color: var(--text); text-decoration: underline; }
.footer-mail { color: var(--muted); text-decoration: none; font-weight: 900; }
.footer-mail:hover { color: var(--text); text-decoration: underline; }

.footer-bottom {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.back-to-top { color: var(--muted); text-decoration: none; font-weight: 900; }
.back-to-top:hover { color: var(--text); text-decoration: underline; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 520ms ease, transform 520ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.72);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .highlight,
  .progress-fill {
    animation: none !important;
    transition: none !important;
  }
  .progress-fill::after { animation: none !important; }
}

/* Responsive */
@media (max-width: 980px) {
  .hero-intro { font-size: 46px; }
  .hero-title { font-size: 38px; }
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 46px 18px 20px; }
  .hero-stats { grid-template-columns: 1fr; }
  .cards-3 { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .stack-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    right: 18px;
    top: 64px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 10px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(7, 10, 18, 0.92);
    box-shadow: var(--shadow);
    display: none;
    max-width: calc(100vw - 36px);
  }
  .nav-links.is-open { display: flex; }
  .grid-2 { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .hero-intro { font-size: 40px; }
  .hero-title { font-size: 34px; }
}