/* ===== Local Fonts (GDPR-compliant — no external requests) ===== */
@import url('./assets/fonts/fonts.css');

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

/* ===== Theme Variables ===== */
html.dark {
  --bg-base: #0D1117;
  --bg-surface: #161B22;
  --bg-subtle: #1C2128;
  --border: #30363D;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --accent: #58A6FF;
  --accent-glow: rgba(88, 166, 255, 0.15);
  --console-green: #3FB950;
  --tag-bg: #1F3A5F;
  --tag-text: #79C0FF;
  --nav-bg: rgba(13, 17, 23, 0.85);
  --shadow: rgba(0, 0, 0, 0.4);
  --angular-red: #DD0031;
}

html.light {
  --bg-base: #FFFFFF;
  --bg-surface: #F6F8FA;
  --bg-subtle: #EAEEF2;
  --border: #D0D7DE;
  --text-primary: #1F2328;
  --text-secondary: #636C76;
  --accent: #0969DA;
  --accent-glow: rgba(9, 105, 218, 0.12);
  --console-green: #1A7F37;
  --tag-bg: #DDF4FF;
  --tag-text: #0550AE;
  --nav-bg: rgba(255, 255, 255, 0.85);
  --shadow: rgba(0, 0, 0, 0.08);
  --angular-red: #C53030;
}

/* ===== Base ===== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
  transition: background-color 0.25s, color 0.25s;
}

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

a:hover {
  text-decoration: underline;
}

/* ===== Layout ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

section + section {
  border-top: 1px solid var(--border);
}

/* ===== Section Headers ===== */
.section-header {
  margin-bottom: 48px;
}

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--console-green);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

h2 {
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
}

h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== NAV ===== */
header {
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 60px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 32px;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 17px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo:hover {
  text-decoration: none;
  opacity: 0.75;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 24px;
  margin-right: auto;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s;
  flex-shrink: 0;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  line-height: 1;
}

/* ===== Mobile Drawer ===== */
.mobile-drawer {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.mobile-drawer.open {
  max-height: 300px;
}

.mobile-drawer ul {
  list-style: none;
  padding: 8px 24px 16px;
  display: flex;
  flex-direction: column;
}

.mobile-drawer ul li a {
  display: block;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 15px;
  text-decoration: none;
}

.mobile-drawer ul li:last-child a {
  border-bottom: none;
}

/* ===== HERO ===== */
#hero {
  min-height: calc(100vh - 60px);
  display: flex;
  align-items: center;
  padding: 80px 0;
}

.hero-terminal {
  font-family: 'JetBrains Mono', monospace;
}

.hero-prompt {
  font-size: 28px;
  color: var(--console-green);
  font-weight: 700;
  display: block;
  margin-bottom: 6px;
}

.hero-name-line {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  margin-bottom: 14px;
}

h1.hero-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(34px, 5.5vw, 54px);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.15;
}

.cursor {
  display: inline-block;
  width: 3px;
  height: clamp(34px, 5.5vw, 54px);
  background: var(--accent);
  animation: blink 1s step-end infinite;
  flex-shrink: 0;
  margin-bottom: 3px;
}

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

.hero-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(13px, 2vw, 17px);
  color: var(--text-secondary);
  opacity: 0;
  transition: opacity 0.8s ease;
  line-height: 1.6;
  padding-left: 16px;
}

.hero-sub.visible {
  opacity: 1;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.profile-table {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  border-collapse: collapse;
  width: 100%;
}

.profile-table td {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.profile-table td:first-child {
  color: var(--text-secondary);
  white-space: nowrap;
  padding-right: 24px;
  min-width: 90px;
}

.profile-table td:last-child {
  color: var(--text-primary);
}

.profile-table tr:last-child td {
  border-bottom: none;
}

.lang-level {
  font-size: 11px;
  color: var(--text-secondary);
  opacity: 0.7;
}

/* Degree Timeline */
.degree-list {
  border-left: 2px solid var(--border);
  padding-left: 20px;
  margin-left: 8px;
}

.degree-item {
  position: relative;
  padding: 12px 0;
}

.degree-item::before {
  content: '';
  position: absolute;
  left: -27px;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-base);
}

.degree-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--console-green);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.degree-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== CAREER ===== */
.career-log {
  display: flex;
  flex-direction: column;
}

.career-entry {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0 24px 12px;
  border-bottom: 1px solid var(--border);
  border-left: 3px solid transparent;
  transition: border-left-color 0.2s;
}

.career-entry:hover {
  border-left-color: var(--accent);
}

.career-entry:last-child {
  border-bottom: none;
}

.career-meta {
  flex: 1;
  min-width: 0;
}

.career-timestamp {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--console-green);
  white-space: nowrap;
  display: block;
  margin-bottom: 6px;
}

.career-level {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  background: var(--tag-bg);
  padding: 2px 7px;
  border-radius: 3px;
  display: inline-block;
  margin-bottom: 8px;
}

.career-company {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.career-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
}

.career-role::before {
  content: 'role: ';
  opacity: 0.55;
}

.career-logo-placeholder {
  flex-shrink: 0;
  width: 120px;
  height: 40px;
  border: 1px dashed var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--text-secondary);
  opacity: 0.45;
  text-align: center;
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

/* Featured card spans the full grid row */
.project-card.featured {
  grid-column: 1 / -1;
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.project-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-opensource {
  background: rgba(63, 185, 80, 0.12);
  color: var(--console-green);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.badge-closedsource {
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid rgba(88, 166, 255, 0.25);
}

/* Featured card inner layout */
.project-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.project-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.project-desc.coming-soon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  opacity: 0.5;
}

.project-subtitle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.65;
  margin-bottom: 6px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.tech-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 3px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 3px;
}

.project-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.project-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.project-link.placeholder {
  opacity: 0.4;
  cursor: default;
}

/* Project Diagrams */
.project-diagrams {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.diagram-container {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.diagram-svg {
  width: 100%;
  height: auto;
  display: block;
  background: var(--bg-subtle);
}

.diagram-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  background: var(--bg-subtle);
}

.diagram-placeholder p {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.4;
}

.diagram-caption {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

/* ===== SVG Theme Classes ===== */
.svg-bg            { fill: var(--bg-subtle); }
.svg-accent-box    { fill: var(--bg-subtle); stroke: var(--accent); stroke-width: 1.5; }
.svg-green-box     { fill: var(--bg-subtle); stroke: var(--console-green); stroke-width: 1.5; }
.svg-red-box       { fill: var(--bg-subtle); stroke: var(--angular-red); stroke-width: 1.5; }
.svg-text-primary  { fill: var(--text-primary); }
.svg-text-secondary{ fill: var(--text-secondary); }
.svg-text-accent   { fill: var(--accent); }
.svg-text-green    { fill: var(--console-green); }
.svg-text-red      { fill: var(--angular-red); }
.svg-line-accent   { stroke: var(--accent); stroke-width: 1.5; fill: none; stroke-dasharray: none; }
.svg-line-green    { stroke: var(--console-green); stroke-width: 1.5; fill: none; }
.svg-arrow-accent  { fill: var(--accent); }
.svg-arrow-green   { fill: var(--console-green); }

/* ===== CONTACT ===== */
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 480px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s;
}

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

.contact-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 70px;
}

.contact-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.5;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

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

.footer-copy {
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-ai {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary);
  opacity: 0.65;
}

.footer-ai a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--border);
}

.footer-ai a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .project-card-body {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 640px) {
  nav {
    padding: 0 16px;
    gap: 16px;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
    margin-left: auto;
  }

  h2 {
    font-size: 26px;
  }

  section {
    padding: 60px 0;
  }

  .career-entry {
    flex-wrap: wrap;
    gap: 12px;
  }

  .career-logo-placeholder {
    width: 100px;
    height: 36px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}