/* SpiderHam Lab — design system */

:root {
  --bg: #0b0e13;
  --bg-elevated: #12171f;
  --bg-card: #161c27;
  --bg-card-hover: #1c2433;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e8edf5;
  --text-muted: #9aa8bc;
  --text-dim: #6b7a90;
  --cyan: #3ee0c5;
  --cyan-dim: rgba(62, 224, 197, 0.15);
  --amber: #f0b429;
  --amber-dim: rgba(240, 180, 41, 0.15);
  --violet: #a78bfa;
  --rose: #fb7185;
  --sky: #38bdf8;
  --lime: #a3e635;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --max: 1120px;
  --nav-h: 68px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Code", "Fira Code", "SF Mono", ui-monospace, monospace;
  --section-accent: var(--cyan);
  --section-accent-dim: var(--cyan-dim);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 224, 197, 0.08), transparent 55%),
    radial-gradient(900px 500px at 95% 5%, rgba(240, 180, 41, 0.06), transparent 50%),
    var(--bg);
  line-height: 1.6;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

a:hover {
  color: #7af0db;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* Layout */

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: rgba(11, 14, 19, 0.85);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), #1f9e8a 55%, var(--amber));
  display: grid;
  place-items: center;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 6px 18px rgba(62, 224, 197, 0.25);
  flex-shrink: 0;
}

.brand-mark svg {
  width: 22px;
  height: 22px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text span {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav a[aria-current="page"] {
  color: var(--cyan);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

main {
  padding-block: 2.5rem 4rem;
  min-height: calc(100vh - var(--nav-h) - 180px);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--cyan);
}

/* Hero */

.hero {
  padding: 2rem 0 1rem;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(62, 224, 197, 0.25);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  margin: 0 0 1.1rem;
}

.hero h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(2.1rem, 5vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 14ch;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 0 1.75rem;
  max-width: 42rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Buttons & chips */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border-radius: 999px;
  padding: 0.7rem 1.2rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #2bb89f);
  color: #06241f;
}

.btn-primary:hover {
  color: #031512;
  filter: brightness(1.05);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
}

.link-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
}

.link-chip:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
}

.link-chip[data-kind="file"]::before {
  content: "↓";
  opacity: 0.8;
}

.link-chip[data-kind="external"]::before {
  content: "↗";
  opacity: 0.8;
}

/* Sections */

.section {
  margin-top: 3rem;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1.25rem;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  max-width: 40rem;
}

.section-hero {
  margin-bottom: 2rem;
  padding: 1.75rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background:
    linear-gradient(135deg, var(--section-accent-dim), transparent 55%),
    var(--bg-elevated);
  box-shadow: var(--shadow);
}

.section-hero .eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--section-accent);
  margin: 0 0 0.5rem;
}

.section-hero h1 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.03em;
}

.section-hero p {
  margin: 0;
  color: var(--text-muted);
  max-width: 48rem;
  font-size: 1.05rem;
}

/* Topic cards */

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.topic-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  min-height: 160px;
  overflow: hidden;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.topic-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--topic-color, var(--cyan));
}

.topic-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--topic-color, var(--cyan)) 45%, transparent);
  background: var(--bg-card-hover);
  color: var(--text);
}

.topic-card .icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--topic-color, var(--cyan)) 16%, transparent);
  color: var(--topic-color, var(--cyan));
}

.topic-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.topic-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex: 1;
}

.topic-card .cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--topic-color, var(--cyan));
}

.topic-card[data-topic="rockets"] { --topic-color: var(--rose); }
.topic-card[data-topic="ai"] { --topic-color: var(--violet); }
.topic-card[data-topic="gaming"] { --topic-color: var(--sky); }
.topic-card[data-topic="science"] { --topic-color: var(--lime); }
.topic-card[data-topic="printing"] { --topic-color: var(--amber); }

/* Section accent themes */

[data-section="rockets"] {
  --section-accent: var(--rose);
  --section-accent-dim: rgba(251, 113, 133, 0.14);
}

[data-section="ai"] {
  --section-accent: var(--violet);
  --section-accent-dim: rgba(167, 139, 250, 0.14);
}

[data-section="gaming"] {
  --section-accent: var(--sky);
  --section-accent-dim: rgba(56, 189, 248, 0.14);
}

[data-section="science"] {
  --section-accent: var(--lime);
  --section-accent-dim: rgba(163, 230, 53, 0.12);
}

[data-section="printing"] {
  --section-accent: var(--amber);
  --section-accent-dim: var(--amber-dim);
}

/* Project cards */

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 820px) {
  .project-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.project-card {
  scroll-margin-top: calc(var(--nav-h) + 12px);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.project-card .thumbnail {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #0a0d12;
}

.project-card h3 {
  margin: 0;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.project-card .summary {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border);
}

.video-embed iframe,
.video-embed video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-placeholder {
  display: grid;
  place-items: center;
  height: 100%;
  color: var(--text-dim);
  font-size: 0.9rem;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.03), transparent),
    #0a0d12;
}

.status {
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px dashed var(--border-strong);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
}

.status.error {
  border-color: rgba(251, 113, 133, 0.4);
  color: #fecdd3;
}

/* Featured strip */

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.featured-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.featured-card:hover {
  border-color: color-mix(in srgb, var(--section-accent, var(--cyan)) 50%, transparent);
  transform: translateY(-2px);
  color: var(--text);
}

.featured-card .featured-thumb {
  display: block;
  width: calc(100% + 2.4rem);
  margin: -1.1rem -1.2rem 0.25rem;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: 1px solid var(--border);
  background: #0a0d12;
}

.featured-card .section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--section-accent, var(--cyan));
}

.featured-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.featured-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* About */

.prose {
  max-width: 42rem;
}

.prose h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.03em;
}

.prose p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.prose ul {
  color: var(--text-muted);
  padding-left: 1.2rem;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(62, 224, 197, 0.2);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

.prose h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.75rem;
}

.contact-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.contact-list strong {
  min-width: 5.5rem;
  color: var(--text);
}

.contact-list span,
.contact-list a {
  color: var(--text-muted);
}

/* Responsive nav */

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 0.75rem 1rem 1rem;
    background: rgba(11, 14, 19, 0.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
  }

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

  .nav a {
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-sm);
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}