:root {
  --bg: #f8f6f2;
  --paper: #fffdf9;
  --ink: #1b2732;
  --muted: #5d6c78;
  --line: #d7dee5;
  --brand: #1363b5;
  --brand-soft: #e8f2fd;
  --control-text: #1a3650;
  --control-border: #d2dde7;
  --control-bg: #f7fbff;
  --control-hover-bg: #e8f2fd;
  --control-hover-border: #bcd4ec;
  --tool-text: #0f539a;
  --tool-border: #c5dbf5;
  --footer-text: #5c6b78;
  --accent: #f59f3a;
  --chip: #e9eff4;
  --shadow: 0 20px 40px rgba(17, 31, 45, 0.08);
  --radius: 18px;
  --max: 1120px;
}

[data-theme="dark"] {
  --bg: #0f151c;
  --paper: #18222d;
  --ink: #e9f1f8;
  --muted: #9ab0c2;
  --line: #2b3a48;
  --brand: #73b7ff;
  --brand-soft: #21364b;
  --control-text: #d5e7f7;
  --control-border: #39536a;
  --control-bg: #243748;
  --control-hover-bg: #2f4b63;
  --control-hover-border: #4e7291;
  --tool-text: #c8e4ff;
  --tool-border: #36536b;
  --footer-text: #9ab0c2;
  --accent: #ffba60;
  --chip: #202d3a;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

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

body {
  font-family: "Sora", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 2%, color-mix(in srgb, var(--accent) 26%, transparent) 0%, rgba(255, 239, 217, 0) 26%),
    radial-gradient(circle at 92% 10%, color-mix(in srgb, var(--brand) 22%, transparent) 0%, rgba(220, 238, 255, 0) 28%),
    linear-gradient(180deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 84%, #d9e6f2 16%) 100%);
  line-height: 1.55;
  transition: background 220ms ease, color 220ms ease;
}

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.65rem 0.8rem;
  margin-top: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
}

.top-nav-brand {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.top-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.top-nav-link {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  text-decoration: none;
  color: var(--control-text);
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--control-border);
  background: var(--control-bg);
}

.top-nav-link:hover {
  background: var(--control-hover-bg);
  border-color: var(--control-hover-border);
}

.theme-toggle {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--control-text);
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  border-radius: 999px;
  padding: 0.32rem 0.62rem;
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--control-hover-bg);
  border-color: var(--control-hover-border);
}

.hero {
  padding: 4rem 0 2.2rem;
}

.hero-card {
  background: linear-gradient(145deg, color-mix(in srgb, var(--paper) 95%, #ffffff 5%) 0%, color-mix(in srgb, var(--paper) 90%, var(--brand-soft) 10%) 65%);
  border: 1px solid color-mix(in srgb, var(--line) 85%, #dbe6ef 15%);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 2.3rem;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.8rem;
  animation: reveal 480ms ease-out;
}

.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}

h1 {
  font-size: clamp(1.9rem, 5.2vw, 3.2rem);
  line-height: 1.1;
  margin-bottom: 0.65rem;
}

.headline {
  color: var(--muted);
  max-width: 58ch;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.chip {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.77rem;
  color: color-mix(in srgb, var(--ink) 86%, #203243 14%);
  background: var(--chip);
  border: 1px solid color-mix(in srgb, var(--line) 82%, #cfdae4 18%);
  border-radius: 999px;
  padding: 0.32rem 0.6rem;
  text-decoration: none;
}

.hero-meta {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.meta-label {
  font-family: "IBM Plex Mono", monospace;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.meta-value {
  font-weight: 600;
  font-size: 0.98rem;
}

.section {
  margin: 1.2rem 0;
  animation: reveal 640ms ease-out;
}

.section-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 25px rgba(26, 42, 56, 0.05);
  padding: 1.35rem;
}

.section-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.95rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.mono-note {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.two-col {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 1fr;
}

.stack {
  display: grid;
  gap: 0.7rem;
}

.list {
  padding-left: 1.15rem;
  color: color-mix(in srgb, var(--ink) 80%, #2a3e50 20%);
}

.list li {
  margin-bottom: 0.45rem;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.project {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: color-mix(in srgb, var(--paper) 92%, #ffffff 8%);
  display: grid;
  grid-template-rows: 190px auto;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.project:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(19, 42, 60, 0.09);
}

.project-media {
  background: linear-gradient(135deg, #f1f7ff 0%, #fff3e3 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.project-media img,
.project-media iframe,
.project-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: 0;
}

.project-body {
  padding: 0.95rem;
  display: grid;
  gap: 0.65rem;
}

.project-title {
  font-size: 1.03rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-sub {
  color: var(--muted);
  font-size: 0.9rem;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tool {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  background: var(--brand-soft);
  color: var(--tool-text);
  border: 1px solid var(--tool-border);
  border-radius: 999px;
  padding: 0.25rem 0.5rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.1rem;
}

.project-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--brand);
  text-decoration: none;
}

.project-link:hover {
  text-decoration: underline;
}

.helper {
  border: 1px dashed color-mix(in srgb, var(--line) 80%, #c9d7e3 20%);
  border-radius: 12px;
  background: color-mix(in srgb, var(--paper) 88%, #f5f9fd 12%);
  padding: 0.85rem;
  color: color-mix(in srgb, var(--ink) 74%, #274055 26%);
  font-size: 0.88rem;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.index-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--paper) 92%, #ffffff 8%);
  padding: 0.7rem;
}

.index-item a {
  text-decoration: none;
  color: color-mix(in srgb, var(--brand) 84%, #0e4f90 16%);
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1.35;
}

.index-item a:hover {
  text-decoration: underline;
}

footer {
  padding: 1.2rem 0 2.5rem;
  color: var(--footer-text);
  font-size: 0.84rem;
}

@media (max-width: 900px) {
  .hero-card,
  .two-col {
    grid-template-columns: 1fr;
  }

  .top-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .top-nav-links {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 2.3rem;
  }

  .project {
    grid-template-rows: 210px auto;
  }
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}