@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700;800&family=JetBrains+Mono:wght@400;500&family=DM+Sans:wght@300;400;500&display=swap');

/* ===== DESIGN TOKENS ===== */
:root {
  color-scheme: light dark;

  /* --- Palette primitives --- */
  --gold-dark:  #FFC300;
  --gold:       #FFD700;
  --gold-light: #ffe54a;

  --light-0: #fafafa;  --dark-0: #090909;
  --light-1: #f2f2ec;  --dark-1: #0e0e0e;
  --light-2: #e8e8e2;  --dark-2: #151515;
  --light-3: #deded8;  --dark-3: #1d1d1d;

  --light-ink-0: #0a0a0a;  --dark-ink-0: #f0f0ea;
  --light-ink-1: #5a5a56;  --dark-ink-1: #8a8a84;
  --light-ink-2: #9a9a96;  --dark-ink-2: #4a4a46;

  --light-rule:        #d4d4ce;  --dark-rule:        #1e1e1e;
  --light-rule-subtle: #e2e2dc;  --dark-rule-subtle: #161616;

  /* --- Semantic tokens --- */
  --accent:        light-dark(var(--gold-dark), var(--gold));
  --accent-bright: var(--gold);
  --accent-faint:  light-dark(color-mix(in srgb, var(--gold-dark) 10%, transparent),
                              color-mix(in srgb, var(--gold) 7%, transparent));
  --accent-dim:    light-dark(color-mix(in srgb, var(--gold-dark) 35%, transparent),
                              color-mix(in srgb, var(--gold) 35%, transparent));

  --bg-0:   light-dark(var(--light-0), var(--dark-0));
  --bg-1:   light-dark(var(--light-1), var(--dark-1));
  --bg-2:   light-dark(var(--light-2), var(--dark-2));
  --bg-3:   light-dark(var(--light-3), var(--dark-3));

  --text-0: light-dark(var(--light-ink-0), var(--dark-ink-0));
  --text-1: light-dark(var(--light-ink-1), var(--dark-ink-1));
  --text-2: light-dark(var(--light-ink-2), var(--dark-ink-2));

  --border:        light-dark(var(--light-rule),        var(--dark-rule));
  --border-subtle: light-dark(var(--light-rule-subtle), var(--dark-rule-subtle));

  --dot-color:  light-dark(color-mix(in srgb, #000 6%,              transparent),
                           color-mix(in srgb, #fff 5.5%,            transparent));
  --glow-color: light-dark(color-mix(in srgb, var(--gold-dark) 8%,  transparent),
                           color-mix(in srgb, var(--gold) 5.5%,     transparent));

  --on-accent:     #000;
  --accent-hover:  var(--gold-light);
  --accent-shadow: color-mix(in srgb, var(--gold) 28%, transparent);

  --font-display: 'Syne', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;
  --font-body:    'DM Sans', system-ui, sans-serif;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-1);
  color: var(--text-0);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== HERO ===== */

.hero-section {
  position: relative;
  min-height: 100vh;
  background: var(--bg-0);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Dot grid */
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--dot-color) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
  z-index: 0;
}

/* Yellow ambient glow */
.hero-section::after {
  content: '';
  position: absolute;
  top: -200px;
  left: -100px;
  width: 700px;
  height: 700px;
  background: radial-gradient(ellipse, var(--glow-color) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

/* Nav */
.hero-nav {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.75rem 3rem;
}

.hero-nav-logo {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-decoration: none;
}

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

.hero-nav-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-1);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

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

/* Content */
.hero-content {
  position: relative;
  z-index: 10;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 3rem 7rem;
  max-width: 920px;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 1.75rem;
  display: block;
  opacity: 0.85;
  animation: reveal-up 0.5s ease 0.1s both;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 11vw, 8rem);
  font-weight: 800;
  color: var(--text-0);
  margin: 0 0 2.25rem 0;
  line-height: 0.92;
  letter-spacing: -0.035em;
  animation: reveal-up 0.55s ease 0.2s both;
}

.hero-cursor {
  display: inline-block;
  width: 0.12em;
  height: 0.85em;
  background: var(--accent);
  margin-left: 0.06em;
  vertical-align: middle;
  animation: blink 1.1s step-end infinite;
}

.hero-description {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-1);
  line-height: 1.75;
  margin: 0 0 3rem 0;
  font-weight: 300;
  max-width: 520px;
  animation: reveal-up 0.55s ease 0.35s both;
}

.hero-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: reveal-up 0.55s ease 0.5s both;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: all 0.2s ease;
  border-radius: 3px;
}

.hero-link-primary {
  background: var(--accent-bright);
  color: var(--on-accent);
}

.hero-link-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px var(--accent-shadow);
}

.hero-link-secondary {
  background: transparent;
  color: var(--text-0);
  border: 1px solid var(--border);
}

.hero-link-secondary:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

/* Bottom accent line */
.hero-accent-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 60%);
  z-index: 10;
}

/* ===== SHARED SECTION ===== */

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-0);
  margin: 0 0 0.6rem 0;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-1);
  margin: 0;
  font-weight: 300;
}

/* ===== SKILLS ===== */

.skills-section {
  background: var(--bg-1);
  padding: 6rem 3rem;
  border-top: 1px solid var(--border-subtle);
}

.skills-header {
  margin-bottom: 3.5rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}

.skill-card {
  background: var(--bg-1);
  padding: 2rem 1.75rem;
  transition: background 0.2s ease;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.skill-card:hover { background: var(--bg-2); }
.skill-card:hover::before { transform: scaleX(1); }

.skill-icon {
  font-size: 2.2rem;
  margin-bottom: 1.25rem;
  display: block;
}

.skill-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-0);
  margin: 0 0 0.4rem 0;
  letter-spacing: -0.01em;
}

.skill-description {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-1);
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

/* ===== PROJECTS ===== */

.projects-section {
  background: var(--bg-0);
  padding: 6rem 3rem;
  border-top: 1px solid var(--border-subtle);
}

.projects-header {
  margin-bottom: 3.5rem;
}

.projects-grid {
  display: grid;
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  grid-template-columns: repeat(2, 1fr);
}

.project-card {
  background: var(--bg-0);
  padding: 2.25rem 2rem;
  position: relative;
  overflow: hidden;
  transition: background 0.2s ease;
  display: flex;
  flex-direction: column;
  min-height: 220px;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.project-card:hover { background: var(--bg-2); }
.project-card:hover::before { transform: scaleX(1); }

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.project-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-0);
  margin: 0;
  letter-spacing: -0.015em;
}

.project-link {
  color: var(--text-2);
  text-decoration: none;
  font-size: 1rem;
  flex-shrink: 0;
  transition: color 0.2s;
  line-height: 1;
}

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

.project-description {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-1);
  line-height: 1.65;
  margin: 0 0 1.75rem 0;
  flex: 1;
  font-weight: 300;
}

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

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  color: var(--text-2);
  border: 1px solid var(--border);
  padding: 0.18rem 0.55rem;
  letter-spacing: 0.07em;
  transition: all 0.2s;
}

.project-card:hover .project-tag {
  border-color: var(--accent-dim);
  color: var(--text-1);
}

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

.project-details-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  text-decoration: none;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: color 0.2s;
  flex-shrink: 0;
}

.project-details-link:hover { color: var(--accent); }

/* ===== PROJECT DETAIL PAGE ===== */

.project-detail {
  min-height: 100vh;
  background: var(--bg-0);
}

.project-detail-header {
  padding: 3rem;
  max-width: 860px;
  border-bottom: 1px solid var(--border-subtle);
}

.project-detail-back {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-2);
  text-decoration: none;
  letter-spacing: 0.06em;
  display: inline-block;
  margin-bottom: 2.5rem;
  transition: color 0.2s;
}

.project-detail-back:hover { color: var(--accent); }

.project-detail-meta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-detail-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--text-0);
  margin: 0;
  line-height: 1;
  letter-spacing: -0.03em;
}

.project-detail-description {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--text-1);
  line-height: 1.7;
  margin: 0.5rem 0 0;
  font-weight: 300;
  max-width: 600px;
}

.project-detail-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.project-detail-gallery {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.project-detail-figure {
  margin: 0;
  overflow: hidden;
  background: var(--bg-1);
}

.project-detail-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 600px;
}

.project-detail-not-found {
  padding: 4rem 3rem;
  color: var(--text-1);
  font-family: var(--font-body);
}

@media (max-width: 768px) {
  .project-detail-header { padding: 2rem 1.5rem; }
  .project-detail-gallery { padding: 0; }
}

/* ===== FOOTER ===== */

.site-footer {
  background: var(--bg-0);
  border-top: 1px solid var(--border-subtle);
  padding: 2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  letter-spacing: 0.06em;
}

.footer-copy em {
  color: var(--accent);
  font-style: normal;
}

.footer-links {
  display: flex;
  gap: 1.75rem;
}

.footer-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ===== ANIMATIONS ===== */

@keyframes reveal-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
  .hero-nav { padding: 1.25rem 1.5rem; }
  .hero-content { padding: 2.5rem 1.5rem 6rem; }

  .skills-section,
  .projects-section { padding: 4rem 1.5rem; }

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

  .site-footer {
    padding: 1.5rem;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-nav-links { gap: 1.25rem; }

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