:root {
  --bg: #f4f1e1;
  --fg: #1a1a1a;
  --card: #ffffff;
  --accent: #ff5d3a;
  --accent2: #ffd23f;
  --accent3: #2ad167;
  --border: #1a1a1a;
  --shadow: #1a1a1a;
  --muted: #555;
}

[data-theme="dark"] {
  --bg: #141414;
  --fg: #f4f1e1;
  --card: #1f1f1f;
  --accent: #ff6b4a;
  --accent2: #ffd23f;
  --accent3: #38e07c;
  --border: #f4f1e1;
  --shadow: #f4f1e1;
  --muted: #b0aca0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Courier New", ui-monospace, Menlo, Consolas, monospace;
  background: var(--bg);
  color: var(--fg);
  transition: background 0.2s ease, color 0.2s ease;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg);
  border-bottom: 3px solid var(--border);
}

.nav-brand {
  font-size: 1.4rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}

.nav-brand span {
  color: var(--accent);
}

.toggle {
  width: 48px;
  height: 48px;
  font-size: 1.3rem;
  cursor: pointer;
  background: var(--accent2);
  color: var(--fg);
  border: 3px solid var(--border);
  border-radius: 8px;
  box-shadow: 4px 4px 0 var(--shadow);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.toggle:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--shadow);
}

/* ---------- Layout ---------- */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 56px 0;
}

.section-title {
  font-size: 1.8rem;
  margin-bottom: 28px;
  text-transform: uppercase;
}

.stamp {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: 3px solid var(--border);
  box-shadow: 3px 3px 0 var(--shadow);
  padding: 4px 10px;
  margin-right: 12px;
  font-size: 1rem;
  transform: rotate(-3deg);
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  padding: 72px 0 40px;
}

.kicker {
  display: inline-block;
  background: var(--accent2);
  border: 3px solid var(--border);
  box-shadow: 3px 3px 0 var(--shadow);
  padding: 6px 12px;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-name {
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  line-height: 1;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.hero-name::after {
  content: "_";
  color: var(--accent3);
}

.hero-role {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero-desc {
  color: var(--muted);
  margin-bottom: 28px;
  max-width: 40ch;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-card {
  position: relative;
  background: transparent;
  border: none;
  box-shadow: none;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.yin-yang-container {
  position: relative;
  width: 200px;
  height: 200px;
  animation: spin 8s linear infinite;
  cursor: pointer;
}

.yin-yang-container:hover {
  animation-play-state: paused;
}

.yin-yang-half {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  z-index: 2;
}

.black-half {
  clip-path: polygon(50% 0%, 50% 50%, 100% 0%, 100% 100%, 0% 100%, 0% 0%);
}

.white-half {
  clip-path: polygon(50% 100%, 50% 50%, 0% 100%, 0% 0%, 100% 0%, 100% 100%);
}

.yin-yang-symbol {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--border);
  box-shadow: 8px 8px 0 var(--shadow);
}

.yy-black {
  position: absolute;
  width: 100%;
  height: 50%;
  background: #1a1a1a;
}

.yy-white {
  position: absolute;
  top: 50%;
  width: 100%;
  height: 50%;
  background: #f4f1e1;
}

.yy-dot-black {
  position: absolute;
  top: 25%;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: #1a1a1a;
  border-radius: 50%;
}

.yy-dot-white {
  position: absolute;
  top: 75%;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: #f4f1e1;
  border-radius: 50%;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: inherit;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  padding: 12px 20px;
  border: 3px solid var(--border);
  border-radius: 8px;
  box-shadow: 4px 4px 0 var(--shadow);
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--shadow);
}

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

.btn-ghost {
  background: var(--card);
  color: var(--fg);
}

.btn-sm {
  align-self: flex-start;
  padding: 8px 14px;
  font-size: 0.85rem;
}

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 4px solid var(--border);
  border-radius: 12px;
  box-shadow: 8px 8px 0 var(--shadow);
  padding: 24px;
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.about-story p {
  font-size: 1.1rem;
  line-height: 1.7;
}

.facts {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-weight: 700;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.project {
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.project:hover {
  transform: translate(-4px, -4px);
  box-shadow: 12px 12px 0 var(--shadow);
}

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.project-tag {
  background: var(--accent2);
  border: 3px solid var(--border);
  padding: 4px 8px;
  font-size: 0.75rem;
  font-weight: 700;
}

.project h3 {
  font-size: 1.4rem;
}

.project p {
  color: var(--muted);
  line-height: 1.6;
}

.project-meta {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-meta span {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 0.8rem;
}

.project-links {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

/* ---------- Skills ---------- */
.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.pill {
  background: var(--card);
  border: 3px solid var(--border);
  border-radius: 999px;
  box-shadow: 4px 4px 0 var(--shadow);
  padding: 10px 18px;
  font-weight: 700;
}

.pill-accent {
  background: var(--accent);
  color: #fff;
}

/* ---------- Banner ---------- */
.banner {
  background: var(--accent);
  color: #fff;
  border-top: 4px solid var(--border);
  border-bottom: 4px solid var(--border);
  padding: 18px 24px;
  transform: rotate(-1deg);
  margin: 40px -24px;
  text-align: center;
  font-weight: 700;
  letter-spacing: 2px;
}

/* ---------- Contact ---------- */
.contact {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  background: var(--accent2);
}

.contact-line {
  font-size: 1.2rem;
  font-weight: 700;
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: 32px 24px;
  border-top: 3px solid var(--border);
  margin-top: 40px;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 48px 0 24px;
  }

  .hero-card {
    height: 220px;
  }

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

  .banner {
    margin: 24px 0;
  }
}