:root {
  --bg: #0a0a0a;
  --bg-elevated: #111111;
  --fg: #f5f5f5;
  --fg-muted: #a3a3a3;
  --accent: #f7e017;
  --accent-dark: #e3cd00;
  --accent-text: var(--accent);
  --on-accent: #0a0a0a;
  --border: #f5f5f5;
  --border-subtle: #333333;
  --border-width: 3px;
  --radius: 0;
  --shadow: 8px 8px 0 0 var(--accent);
  --container: 1100px;
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", Consolas, monospace;
}

[data-theme="light"] {
  --bg: #f5f5f5;
  --bg-elevated: #ffffff;
  --fg: #0a0a0a;
  --fg-muted: #525252;
  --accent: #f7e017;
  --accent-dark: #e3cd00;
  --accent-text: #0a0a0a;
  --on-accent: #0a0a0a;
  --border: #0a0a0a;
  --border-subtle: #d4d4d4;
  --shadow: 8px 8px 0 0 var(--accent);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.2s ease, color 0.2s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--fg);
  text-decoration: none;
}

.monospace {
  font-family: var(--font-mono);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  border-bottom: var(--border-width) solid var(--border);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  background-color: var(--accent);
  color: var(--on-accent);
  padding: 8px 14px;
  border: var(--border-width) solid var(--border);
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 8px;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 2px solid transparent;
  transition: all 0.15s ease;
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
  background-color: var(--accent);
  color: var(--on-accent);
  border-color: var(--border);
  outline: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: var(--border-width) solid var(--border);
  cursor: pointer;
  padding: 0;
}

.menu-bar {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--fg);
  margin: 0 auto;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 16px;
  background: transparent;
  border: var(--border-width) solid var(--border);
  color: var(--fg);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.theme-toggle:hover,
.theme-toggle:focus {
  background-color: var(--accent);
  color: var(--on-accent);
  outline: none;
}

.theme-toggle .theme-icon {
  display: none;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.theme-toggle .theme-icon.active {
  display: block;
}

.theme-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Sections */
.section {
  padding: 80px 0;
  border-bottom: var(--border-width) solid var(--border-subtle);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 48px;
  border-bottom: var(--border-width) solid var(--border);
  padding-bottom: 16px;
}

.section-number {
  font-size: 1rem;
  font-weight: 700;
  background-color: var(--accent);
  color: var(--on-accent);
  padding: 6px 12px;
  border: var(--border-width) solid var(--border);
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  margin: 0;
  text-transform: uppercase;
}

/* Hero */
.hero {
  padding-top: 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  max-width: 620px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 16px;
  padding: 8px 12px;
  border: var(--border-width) solid var(--border);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.05em;
  margin: 0 0 24px;
  text-transform: uppercase;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--fg-muted);
  margin: 0 0 16px;
  line-height: 1.5;
}

.hero-location {
  font-size: 0.9rem;
  color: var(--fg-muted);
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: var(--border-width) solid var(--border);
  transition: all 0.15s ease;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--on-accent);
  box-shadow: var(--shadow);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--fg);
  color: var(--bg);
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 0 var(--accent);
  outline: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--fg);
}

.btn-outline:hover,
.btn-outline:focus {
  background-color: var(--accent);
  color: var(--on-accent);
  outline: none;
}

.hero-photo {
  display: flex;
  justify-content: center;
}

.photo-frame {
  position: relative;
  border: var(--border-width) solid var(--border);
  box-shadow: var(--shadow);
  background-color: var(--accent);
  line-height: 0;
}

.photo-frame img {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: grayscale(20%) contrast(1.1);
}

.about-text {
  margin-top: 64px;
  padding: 32px;
  border: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
}

.about-text p {
  font-size: 1.1rem;
  margin: 0;
  color: var(--fg-muted);
}

/* Experience */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.experience-card {
  padding: 32px;
  border: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.experience-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow);
}

.experience-header {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border-subtle);
}

.experience-company {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.experience-summary {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fg-muted);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.experience-description {
  font-size: 1rem;
  color: var(--fg-muted);
  margin: 0 0 16px;
}

.experience-highlights {
  margin: 0 0 24px;
  padding-left: 20px;
}

.experience-highlights li {
  margin-bottom: 10px;
  color: var(--fg);
}

.experience-roles {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.experience-role-item {
  padding: 24px;
  border: 2px solid var(--border-subtle);
  background-color: var(--bg);
  transition: border-color 0.15s ease;
}

.experience-role-item:hover {
  border-color: var(--accent);
}

.role-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.role-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.role-type {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-text);
  margin: 0;
  text-transform: uppercase;
}

.role-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-align: right;
}

.role-description {
  font-size: 0.95rem;
  color: var(--fg-muted);
  margin: 0 0 16px;
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  border: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.project-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow);
}

.project-link {
  display: block;
  padding: 28px;
  height: 100%;
  position: relative;
}

.project-date {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 2px solid var(--border);
  margin-bottom: 16px;
}

.project-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.project-role {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 12px;
  text-transform: uppercase;
}

.project-description {
  font-size: 0.95rem;
  color: var(--fg-muted);
  margin: 0 0 20px;
}

.project-arrow {
  position: absolute;
  bottom: 28px;
  right: 28px;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--accent-text);
  transition: transform 0.15s ease;
}

.project-card:hover .project-arrow {
  transform: translate(4px, -4px);
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.skill-group {
  padding: 28px;
  border: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
}

.skill-category {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
}

/* Education */
.education-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.education-card {
  padding: 28px;
  border: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
}

.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.education-institution {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
}

.education-period {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 10px;
  border: 2px solid var(--border);
  white-space: nowrap;
}

.education-degree {
  font-size: 1rem;
  margin: 0 0 8px;
  color: var(--fg);
}

.education-gpa {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-text);
  margin: 0 0 12px;
}

.education-thesis {
  font-size: 0.95rem;
  color: var(--fg-muted);
  margin: 0;
  font-style: italic;
}

/* Tech list */
.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 10px;
  border: 2px solid var(--border-subtle);
  background-color: transparent;
  color: var(--fg-muted);
  transition: all 0.15s ease;
}

.tag:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
}

.contact-card {
  padding: 40px;
  border: var(--border-width) solid var(--border);
  background-color: var(--accent);
  color: var(--on-accent);
}

.contact-lead {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 24px;
  line-height: 1.3;
}

.contact-email a {
  display: inline-block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--on-accent);
  border-bottom: 3px solid var(--on-accent);
  margin-bottom: 12px;
  word-break: break-all;
}

.contact-email a:hover {
  background-color: var(--on-accent);
  color: var(--accent);
}

.contact-phone {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  border: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.contact-link:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow);
}

.contact-link-label {
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-link-url {
  font-size: 0.8rem;
  color: var(--fg-muted);
  word-break: break-all;
}

/* Footer */
.site-footer {
  padding: 32px 0;
  border-top: var(--border-width) solid var(--border);
  background-color: var(--bg-elevated);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-grid p {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin: 0;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .skills-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-photo {
    order: -1;
  }

  .photo-frame img {
    max-width: 280px;
  }
}

@media (max-width: 700px) {
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--bg);
    border-bottom: var(--border-width) solid var(--border);
    padding: 16px 24px;
    gap: 0;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-link {
    border-left: none;
    border-right: none;
    border-top: none;
    border-bottom: 2px solid var(--border-subtle);
    padding: 14px 0;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .education-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .role-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .role-meta {
    align-items: flex-start;
    text-align: left;
  }

  .section {
    padding: 64px 0;
  }

  .footer-grid {
    flex-direction: column;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}