/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --color-bg:             #0c0c0c;
  --color-surface:        #161616;
  --color-border:         #262626;
  --color-border-hover:   #3f3f3f;
  --color-accent:         #4ade80;
  --color-accent-dim:     rgba(74, 222, 128, 0.12);
  --color-accent-glow:    rgba(74, 222, 128, 0.07);
  --color-text-primary:   #fafafa;
  --color-text-secondary: #a3a3a3;
  --color-text-muted:     #525252;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 16px;

  --max-width: 1100px;
  --gutter:    clamp(1.25rem, 5vw, 2.5rem);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  font-size: 1rem;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: 6rem;
}

/* ============================================================
   HEADER
   ============================================================ */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(12, 12, 12, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: 1.125rem;
}

.wordmark {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.wordmark:hover {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--color-text-primary);
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-inline: var(--gutter);
  padding-block: 4rem;
  position: relative;
  background-color: var(--color-bg);
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 800px;
}

.hero-wordmark {
  font-size: clamp(3.5rem, 10vw, 7.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--color-text-primary);
}

.hero-wordmark .accent {
  color: var(--color-accent);
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 44ch;
  line-height: 1.65;
  font-weight: 400;
}

/* Scroll chevron */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  animation: bounce 2.4s ease-in-out infinite;
}

.scroll-hint::before,
.scroll-hint::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  border-right: 1.5px solid var(--color-text-muted);
  border-bottom: 1.5px solid var(--color-text-muted);
  transform: rotate(45deg);
}

.scroll-hint::before {
  top: 0;
  left: 5px;
}

.scroll-hint::after {
  top: 6px;
  left: 5px;
  opacity: 0.5;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(7px); }
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 0.625rem;
}

.section-description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  max-width: 52ch;
  line-height: 1.7;
  margin-bottom: 3rem;
}

/* ============================================================
   CARD GRID
   ============================================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1.5rem;
}

/* ============================================================
   PROJECT CARDS
   ============================================================ */
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base),
              transform var(--transition-base);
  cursor: pointer;
}

.project-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-dim),
              0 12px 40px var(--color-accent-glow);
  transform: translateY(-2px);
}

.card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  flex: 1;
}

.card-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.card-title {
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.card-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-top: 0.25rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: 1.25rem;
}

.card-arrow {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.project-card:hover .card-arrow {
  transform: translateX(4px);
}

/* ============================================================
   TRMNL CARDS
   ============================================================ */
.trmnl-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.trmnl-card:hover {
  border-color: var(--color-border-hover);
}

.trmnl-preview {
  height: 120px;
  background-color: #1c1c1c;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.trmnl-screen {
  width: 80px;
  height: 56px;
  border: 1.5px solid #333;
  border-radius: 4px;
  background-color: #e8e8e0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.trmnl-screen::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px dashed #bbb;
  border-radius: 2px;
}

.trmnl-screen-label {
  font-size: 0.4rem;
  color: #888;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: monospace;
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25rem 0.625rem;
  width: fit-content;
}

.badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-text-muted);
  flex-shrink: 0;
}

.trmnl-card .card-title {
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.trmnl-card .card-description {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   SECTION DIVIDER
   ============================================================ */
.section-divider {
  height: 1px;
  background: var(--color-border);
  margin-inline: var(--gutter);
}

/* ============================================================
   3D PRINTING TEASER
   ============================================================ */
.teaser-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.teaser-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.teaser-section .section-description {
  margin-bottom: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  justify-content: center;
  align-items: center;
}

footer p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 560px) {
  .nav-links {
    gap: 1.25rem;
  }

  .nav-links a {
    font-size: 0.8125rem;
  }

  .section {
    padding-block: 4rem;
  }

  .hero-wordmark {
    letter-spacing: -0.03em;
  }

  .section-description {
    margin-bottom: 2rem;
  }
}

@media (max-width: 380px) {
  .nav-links {
    display: none;
  }
}