:root {
  --bg: #071923;
  --bg-soft: #0d1d2a;
  --panel: #122633;
  --panel-strong: #173244;
  --card: #0e1c29;
  --card-alt: #101f2d;
  --text: #edf3f8;
  --muted: #b0c0cc;
  --line: rgba(173, 203, 227, 0.18);
  --accent: #6ecae5;
  --accent-strong: #8bd5f5;
  --danger: #d74d4d;
  --success: #2aa67e;
  --shadow: 0 18px 45px rgba(3, 10, 16, 0.4);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

img, video {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  max-width: 900px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 25, 35, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 72px;
}

.brand {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--muted);
  transition: color 0.2s ease;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.hero {
  padding: 96px 0 72px;
  background: radial-gradient(circle at top left, rgba(110, 201, 229, 0.12), transparent 28%), var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-weight: 700;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero-tagline {
  margin: 1rem 0;
  color: var(--accent-strong);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
}

.lead {
  max-width: 650px;
  color: var(--muted);
  font-size: 1.06rem;
  margin: 1.25rem 0 0;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.25rem;
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-contact a {
  color: var(--muted);
}

.hero-contact a:hover,
.hero-contact a:focus-visible {
  color: var(--text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.78rem 1.4rem;
  border-radius: 10px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  color: #051b29;
}

.button.secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.2);
  color: var(--text);
}

.button.tertiary {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.1);
  color: var(--text);
}

.hero-panel {
  display: grid;
  gap: 1rem;
}

.mini-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.2rem 1.2rem 1rem;
  box-shadow: var(--shadow);
}

.mini-card.accent {
  background: linear-gradient(180deg, rgba(110, 201, 229, 0.09), rgba(17, 31, 42, 0.15));
}

.card-label {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.mini-card strong {
  display: block;
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.mini-card small {
  color: var(--muted);
}

.section {
  padding: 90px 0;
}

.section.alt {
  background: rgba(14, 28, 41, 0.9);
}

.section-heading {
  margin-bottom: 2.2rem;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(110, 201, 229, 0.45);
}

.project-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.project-card-body {
  padding: 1.4rem 1.4rem 1.5rem;
}

.project-type {
  color: var(--accent-strong);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
}

.project-card h3 {
  margin: 0.75rem 0 0.6rem;
  font-size: 1.45rem;
}

.project-card p {
  margin: 0;
  color: var(--muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.tag-list span {
  display: inline-flex;
  align-items: center;
  background: rgba(110, 201, 229, 0.08);
  border: 1px solid rgba(110, 201, 229, 0.18);
  border-radius: 999px;
  padding: 0.38rem 0.72rem;
  color: var(--text);
  font-size: 0.74rem;
}

.text-link {
  display: inline-block;
  margin-top: 1.1rem;
  color: var(--accent-strong);
  font-weight: 700;
}

.detail-section {
  border-top: 1px solid var(--line);
}

.project-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.project-meta {
  color: var(--muted);
  margin: 0;
}

.project-body-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.project-body-grid h3,
.two-column h3,
.video-block h3,
.tech-box h3 {
  margin-top: 0;
  margin-bottom: 0.7rem;
  font-size: 1.2rem;
}

.project-body-grid p,
.two-column p,
.tech-box li,
.skill-block li {
  color: var(--muted);
}

.tech-box {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.3rem 1.25rem;
}

.tech-box ul,
.skill-block ul {
  margin: 0;
  padding-left: 1.15rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.gallery-grid.single-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.gallery-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.gallery-item figcaption {
  padding: 0.9rem 1rem 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.two-column {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.video-block {
  margin-top: 1rem;
}

.video-grid {
  display: grid;
  gap: 1.2rem;
}

.video-grid.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.video-block video {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #000;
}

.video-note {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.2rem;
}

.skill-block {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.3rem 1.15rem;
}

.skill-block h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  font-size: 1.1rem;
}

.site-footer {
  background: rgba(7, 25, 35, 0.85);
  border-top: 1px solid var(--line);
  padding: 40px 0 60px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.footer-grid h3 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--accent-strong);
  font-weight: 700;
}

.footer-subtitle {
  margin: 0.25rem 0 0.6rem;
  color: var(--muted);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.4rem;
}

.contact-list a {
  color: var(--muted);
}

.contact-list a:hover,
.contact-list a:focus-visible {
  color: var(--text);
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(4, 9, 14, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 100;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: min(96vw, 1200px);
  max-height: 90vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 18px;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border: 1px solid var(--line);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 1.6rem;
  cursor: pointer;
}

@media (max-width: 980px) {
  .hero-grid,
  .project-body-grid,
  .two-column,
  .skills-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .project-grid {
    display: grid;
  }

  .gallery-grid,
  .gallery-grid.single-row {
    grid-template-columns: 1fr;
  }

  .project-header,
  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .nav {
    padding: 0.8rem 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }

  .nav-links {
    gap: 0.7rem 1rem;
  }

  .hero {
    padding-top: 60px;
  }

  .button {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .section {
    padding: 72px 0;
  }
}