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

:root {
  --bg:      #070b12;
  --surface: #0d1420;
  --border:  rgba(255,255,255,0.06);
  --white:   #e8f0fe;
  --muted:   #4a5568;
  --light:   #8899aa;
  --accent:  #38d9ff;
  --accent2: #0ea5e9;
  --glow:    rgba(56,217,255,0.12);
  --font-h:  'Space Grotesk', sans-serif;
  --font-b:  'Inter', sans-serif;
  --font-c:  'Fira Code', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-b);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2.5rem;
  background: rgba(7,11,18,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.nav-home {
  font-family: var(--font-c);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  transition: color 0.3s;
}

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

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--light);
  letter-spacing: 0.04em;
  transition: color 0.25s;
}

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

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* animated grid background */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,217,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,217,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
  animation: gridShift 20s linear infinite;
}

@keyframes gridShift {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

/* radial glow */
.hero::before {
  content: '';
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(56,217,255,0.06) 0%, transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 8rem 2.5rem 6rem;
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.hero-tag {
  font-family: var(--font-c);
  font-size: 0.72rem;
  color: var(--accent);
  border: 1px solid rgba(56,217,255,0.25);
  padding: 0.2rem 0.7rem;
  border-radius: 3px;
  letter-spacing: 0.05em;
}

.hero-name {
  font-family: var(--font-h);
  font-weight: 300;
  font-size: clamp(3.5rem, 9vw, 8rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.hero-name .line { display: block; }

.accent-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-alias {
  font-family: var(--font-c);
  font-size: 0.9rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--light);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2.5rem;
}

.hero-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.chip {
  font-family: var(--font-c);
  font-size: 0.72rem;
  color: var(--light);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
  transition: border-color 0.3s, color 0.3s;
}

.chip:hover {
  border-color: rgba(56,217,255,0.35);
  color: var(--accent);
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-h);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid rgba(56,217,255,0.3);
  padding: 0.7rem 1.5rem;
  border-radius: 4px;
  letter-spacing: 0.06em;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.hero-btn:hover {
  background: rgba(56,217,255,0.07);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(56,217,255,0.1);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  font-family: var(--font-c);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--muted);
  writing-mode: vertical-rl;
  text-transform: uppercase;
  animation: fadeUpDown 2.5s ease-in-out infinite;
}

@keyframes fadeUpDown {
  0%, 100% { opacity: 0.4; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-6px); }
}

/* ── SECTION COMMON ── */
.section {
  padding: 8rem 0;
}

.section--alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-label {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 4rem;
}

.label-num {
  font-family: var(--font-c);
  font-size: 0.75rem;
  color: var(--accent);
  opacity: 0.6;
}

.label-text {
  font-family: var(--font-h);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--light);
}

/* ── ABOUT ── */
.about-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 6rem;
  align-items: start;
}

.about-heading {
  font-family: var(--font-h);
  font-weight: 300;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 2rem;
}

.about-heading em {
  font-style: italic;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-text p {
  color: var(--light);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  max-width: 520px;
}

.about-text strong { color: var(--white); font-weight: 500; }

.inline-link {
  color: var(--accent);
  border-bottom: 1px solid rgba(56,217,255,0.3);
  transition: border-color 0.3s;
}

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

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

.info-card {
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.info-card:hover {
  border-color: rgba(56,217,255,0.2);
  box-shadow: 0 0 20px rgba(56,217,255,0.04);
}

.info-num {
  font-family: var(--font-h);
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--accent);
  line-height: 1;
}

.info-num small {
  font-size: 1.2rem;
  opacity: 0.7;
}

.info-label {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  line-height: 1.4;
}

/* ── STACK ── */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.stack-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem 1.75rem;
  transition: border-color 0.35s, box-shadow 0.35s, transform 0.35s;
}

.stack-card:hover {
  border-color: rgba(56,217,255,0.2);
  box-shadow: 0 8px 32px rgba(56,217,255,0.05);
  transform: translateY(-3px);
}

.stack-card-icon {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-family: var(--font-c);
  color: var(--accent);
  opacity: 0.7;
}

.stack-card-title {
  font-family: var(--font-h);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--white);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.skill {
  font-family: var(--font-c);
  font-size: 0.78rem;
  color: var(--light);
  padding: 0.3rem 0.6rem;
  border-radius: 3px;
  background: transparent;
  border: 1px solid transparent;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
  display: inline-block;
  width: fit-content;
}

.skill.primary {
  color: var(--accent);
  background: rgba(56,217,255,0.06);
  border-color: rgba(56,217,255,0.15);
}

.skill:not(.primary):hover {
  background: rgba(255,255,255,0.04);
  border-color: var(--border);
}

/* ── EXPERIENCE (TIMELINE) ── */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.tl-item {
  display: grid;
  grid-template-columns: 140px 32px 1fr;
  gap: 0 2rem;
  padding-bottom: 3.5rem;
}

.tl-left {
  padding-top: 0.15rem;
  text-align: right;
}

.tl-period {
  font-family: var(--font-c);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.tl-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tl-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--muted);
  background: var(--bg);
  flex-shrink: 0;
  margin-top: 0.2rem;
  transition: border-color 0.3s;
}

.tl-dot.active {
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(56,217,255,0.35);
}

.tl-line {
  flex: 1;
  width: 1px;
  background: var(--border);
  margin-top: 6px;
}

.tl-company {
  font-family: var(--font-c);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
}

.tl-role {
  font-family: var(--font-h);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 1rem;
}

.tl-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.tl-bullets li {
  font-size: 0.875rem;
  color: var(--light);
  padding-left: 1rem;
  position: relative;
}

.tl-bullets li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--muted);
  font-size: 0.7rem;
  top: 0.25em;
}

.tl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tl-tags span {
  font-family: var(--font-c);
  font-size: 0.68rem;
  color: var(--muted);
  border: 1px solid rgba(255,255,255,0.07);
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
}

/* ── CONTACT ── */
.section--contact {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

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

.contact-heading {
  font-family: var(--font-h);
  font-weight: 300;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.contact-heading em {
  font-style: italic;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-sub {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 360px;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.clink {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 1.75rem;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}

.clink:hover {
  border-color: rgba(56,217,255,0.25);
  box-shadow: 0 0 24px rgba(56,217,255,0.05);
  background: rgba(56,217,255,0.03);
}

.clink-icon {
  font-size: 1.1rem;
  color: var(--accent);
  min-width: 1.5rem;
  text-align: center;
}

.clink-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
}

.clink-label {
  font-family: var(--font-c);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.clink-val {
  font-size: 0.9rem;
  color: var(--white);
}

.clink-arrow {
  color: var(--muted);
  font-size: 1rem;
  transition: color 0.3s, transform 0.3s;
}

.clink:hover .clink-arrow {
  color: var(--accent);
  transform: translateX(3px);
}

/* ── FOOTER ── */
.footer {
  padding: 2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.footer-home {
  font-family: var(--font-c);
  color: var(--muted);
  transition: color 0.3s;
}

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

.footer-code {
  font-family: var(--font-c);
  font-size: 0.68rem;
  opacity: 0.5;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .about-layout { grid-template-columns: 1fr; gap: 3rem; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 680px) {
  .nav { padding: 1rem 1.5rem; }
  .nav-links { gap: 1.25rem; }
  .hero-inner { padding: 7rem 1.5rem 5rem; }
  .container { padding: 0 1.5rem; }
  .section { padding: 5rem 0; }
  .stack-grid { grid-template-columns: 1fr; }
  .tl-item { grid-template-columns: 90px 28px 1fr; gap: 0 1rem; }
  .footer { flex-direction: column; gap: 0.5rem; text-align: center; }
  .hero-scroll-hint { display: none; }
}

@media (max-width: 480px) {
  .nav-links { display: none; }
  .about-cards { grid-template-columns: 1fr; }
}