/* ========== THEME VARIABLES ========== */
:root,
[data-theme="dark"] {
  --ink: #0e1117;
  --ink-soft: #161b22;
  --paper: #e6edf3;
  --paper-dim: #8b949e;
  --amber: #e2a545;
  --teal: #3fb950;
  --line: rgba(230, 237, 243, 0.1);
  --chip-bg: transparent;
  --chip-border: var(--line);
  --card-bg: var(--ink-soft);
  --nav-bg: rgba(14, 17, 23, 0.85);
}

[data-theme="light"] {
  --ink: #ffffff;
  --ink-soft: #f6f8fa;
  --paper: #1f2328;
  --paper-dim: #656d76;
  --amber: #bf8700;
  --teal: #1a7f37;
  --line: rgba(31, 35, 40, 0.12);
  --chip-bg: rgba(31, 35, 40, 0.04);
  --chip-border: rgba(31, 35, 40, 0.18);
  --card-bg: var(--ink-soft);
  --nav-bg: rgba(255, 255, 255, 0.85);
}

/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  background: var(--ink);
  color: var(--paper);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  background: var(--amber);
  color: #0e1117;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 8px;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* ========== NAVBAR ========== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 24px;
}
.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--paper-dim);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-logo .dot { color: var(--teal); }
.nav-links {
  display: flex;
  gap: 8px;
}
.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  color: var(--paper-dim);
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--paper);
  background: rgba(230, 237, 243, 0.06);
}
[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  background: rgba(31, 35, 40, 0.06);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-social {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--paper-dim);
  font-size: 1rem;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-social:hover {
  color: var(--paper);
  background: rgba(230, 237, 243, 0.06);
}
[data-theme="light"] .nav-social:hover {
  background: rgba(31, 35, 40, 0.06);
}

/* ========== THEME TOGGLE ========== */
.theme-toggle {
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  color: var(--paper-dim);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.theme-toggle:hover { color: var(--amber); border-color: var(--amber); }
[data-theme="dark"] #theme-icon-sun { display: inline; }
[data-theme="dark"] #theme-icon-moon { display: none; }
[data-theme="light"] #theme-icon-sun { display: none; }
[data-theme="light"] #theme-icon-moon { display: inline; }

/* ========== HAMBURGER ========== */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  padding: 8px;
  transition: border-color 0.2s ease;
}
.hamburger:hover { border-color: var(--amber); }
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--paper-dim);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== MOBILE NAV OVERLAY ========== */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.mobile-overlay.active { opacity: 1; }

.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
  padding: 16px 24px;
  z-index: 91;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.active { display: flex; }
.mobile-menu a {
  font-size: 1rem;
  padding: 12px 16px;
  border-radius: 8px;
  color: var(--paper-dim);
  transition: color 0.2s ease, background 0.2s ease;
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--paper);
  background: rgba(230, 237, 243, 0.06);
}
[data-theme="light"] .mobile-menu a:hover,
[data-theme="light"] .mobile-menu a.active {
  background: rgba(31, 35, 40, 0.06);
}

/* ========== HERO ========== */
.hero {
  padding: 120px 0 80px;
  border-bottom: 1px solid var(--line);
}
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--teal);
  text-transform: lowercase;
  margin-bottom: 20px;
  display: block;
}
h1 {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  line-height: 1.08;
  margin: 0 0 24px;
  max-width: 16ch;
}
h1 em { font-style: italic; color: var(--amber); }
.hero p.lead {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.15rem;
  color: var(--paper-dim);
  max-width: 58ch;
  margin: 0 0 36px;
}
.hero-links { display: flex; gap: 14px; flex-wrap: wrap; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--amber);
  color: #fff;
  box-shadow: 0 2px 8px rgba(226, 165, 69, 0.25);
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(226, 165, 69, 0.35); }
.btn-ghost {
  border: 1px solid var(--line);
  color: var(--paper);
}
.btn-ghost:hover { border-color: var(--paper-dim); }

/* ========== SECTIONS ========== */
section { padding: 80px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
.section-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.section-head .tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--teal);
  font-weight: 500;
  flex-shrink: 0;
}
.section-head h2 {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 1.8rem;
  margin: 0;
}
.section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* ========== ABOUT ========== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 48px;
  align-items: start;
}
.about-text p { color: var(--paper-dim); font-size: 1.05rem; max-width: 60ch; }
.about-text strong { color: var(--paper); font-weight: 600; }
.about-image {
  width: 240px;
  height: 240px;
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid var(--line);
  flex-shrink: 0;
}
.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== SKILLS ========== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.skill-block {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card-bg);
  transition: border-color 0.2s ease;
}
.skill-block:hover { border-color: var(--teal); }
.skill-block h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 16px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}
.skill-block h3 i { font-size: 0.9rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  padding: 6px 12px;
  border: 1px solid var(--chip-border);
  border-radius: 6px;
  color: var(--paper-dim);
  background: var(--chip-bg);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.chip:hover { border-color: var(--amber); color: var(--amber); }

/* ========== PROJECTS ========== */
.projects { display: grid; gap: 24px; }
.project {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card-bg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 360px 1fr;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.project:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}
.project-image {
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: var(--ink);
}
.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.project:hover .project-image img { transform: scale(1.03); }
.project-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--paper-dim);
  background: linear-gradient(135deg, var(--ink-soft), var(--ink));
}
.project-placeholder i { font-size: 2rem; opacity: 0.4; }
.project-placeholder span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  opacity: 0.5;
}
.project-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.project h3 {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 1.3rem;
  margin: 0;
}
.status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
  font-weight: 500;
}
.status.finished { background: rgba(63, 185, 80, 0.12); color: var(--teal); }
.status.in-progress { background: rgba(226, 165, 69, 0.12); color: var(--amber); }
.project p { margin: 0; color: var(--paper-dim); font-size: 0.95rem; line-height: 1.55; }
.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 8px;
}
.stack {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--paper-dim);
  opacity: 0.7;
}
.project-link {
  font-size: 0.88rem;
  color: var(--amber);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}
.project-links { display: inline-flex; align-items: center; gap: 16px; }
.project-link:hover { gap: 10px; }
.project-link i { font-size: 0.75rem; }
.project-soon {
  color: var(--paper-dim);
  opacity: 0.7;
  cursor: default;
}

/* ========== CONTACT ========== */
.contact p { color: var(--paper-dim); max-width: 56ch; margin-bottom: 32px; font-size: 1.05rem; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card-bg);
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.contact-card:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}
.contact-card i { font-size: 1.5rem; color: var(--amber); }
.contact-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.contact-value {
  font-size: 0.88rem;
  color: var(--paper-dim);
  word-break: break-all;
}

/* ========== FOOTER ========== */
footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.footer-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--paper-dim);
}
.footer-socials {
  display: flex;
  gap: 12px;
}
.footer-socials a {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--paper-dim);
  transition: color 0.2s ease, background 0.2s ease;
}
.footer-socials a:hover {
  color: var(--paper);
  background: rgba(230, 237, 243, 0.06);
}
[data-theme="light"] .footer-socials a:hover {
  background: rgba(31, 35, 40, 0.06);
}

/* ========== ANIMATIONS ========== */
@media (prefers-reduced-motion: no-preference) {
  .fade-in { animation: fadeIn 0.7s ease both; }
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
}
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .project { grid-template-columns: 1fr; }
  .project-image { height: 200px; }
  .about-content { grid-template-columns: 1fr; gap: 32px; }
  .about-image { width: 180px; height: 180px; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .skills-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
}

@media (max-width: 600px) {
  .hero { padding: 80px 0 50px; }
  h1 { font-size: 2.2rem; max-width: 100%; }
  .hero p.lead { font-size: 1rem; }
  .section-head h2 { font-size: 1.4rem; }
  .project-body { padding: 20px; }
  .project-footer { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}