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

:root {
  --bg: #000000;
  --bg-card: #0a0a0a;
  --border: rgba(255, 255, 255, 0.1);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --text: #ffffff;
  --text-muted: #888888;
  --text-dim: #555555;
  --accent: #ccff00;
  --accent-hover: #b8e600;
  --accent-text: #000000;
  --sans: "Inter", system-ui, sans-serif;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: min(1120px, 90vw);
  margin-inline: auto;
}

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

ul {
  list-style: none;
}

.accent {
  color: var(--accent);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

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

.logo {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.8rem;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline:hover {
  background: rgba(204, 255, 0, 0.08);
}

/* Section labels */
.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 18ch;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.hero-email {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.hero-email:hover {
  color: var(--text);
}

.scroll-hint {
  position: absolute;
  bottom: 3rem;
  left: min(5vw, 40px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.scroll-hint span {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--text-dim), transparent);
}

/* Sections */
section {
  padding: 100px 0;
}

/* Work */
.work {
  border-top: 1px solid var(--border-subtle);
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3rem;
}

.project-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.project-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 42ch;
  margin-bottom: 2rem;
}

.project-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.spec-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.spec-value {
  font-size: 0.9rem;
  font-weight: 600;
}

/* Project visual */
.project-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.project-logo {
  width: min(200px, 45vw);
  height: auto;
  border-radius: 22%;
  box-shadow: 0 24px 64px rgba(37, 99, 235, 0.25);
}

/* Services */
.services {
  border-top: 1px solid var(--border-subtle);
}

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

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition);
}

.service-card:hover {
  border-color: rgba(204, 255, 0, 0.25);
}

.service-num {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.5rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tags span {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
}

/* Contact */
.contact {
  border-top: 1px solid var(--border-subtle);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.contact-text h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.contact-text p {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 38ch;
  line-height: 1.7;
}

.contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: var(--accent);
  color: var(--accent-text);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 700;
  padding: 1.5rem 2rem;
  border-radius: 8px;
  transition: background var(--transition), transform 0.15s ease;
  text-align: center;
}

.contact-btn:hover {
  background: var(--accent-hover);
}

.contact-btn:active {
  transform: scale(0.98);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Mobile */
@media (max-width: 900px) {
  .project-card {
    grid-template-columns: 1fr;
    padding: 2rem;
  }

  .project-visual {
    order: -1;
    padding: 1rem 0 2rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-right {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav-right.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .nav-links li a {
    display: block;
    padding: 0.85rem 1.5rem;
  }

  .nav-right .btn {
    margin: 0.5rem 1.5rem 0;
    justify-content: center;
  }

  .nav-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .scroll-hint {
    display: none;
  }

  .project-specs {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  section {
    padding: 72px 0;
  }
}