:root {
  --bg-canvas: #0b0b0d;
  --bg-surface: #19191d;
  --bg-surface-hover: #222228;
  --text-primary: #f5f5f6;
  --text-muted: #c0c4cc;
  --accent-primary: #dc2626;
  --accent-secondary: #ef4444;
  --silver: #c0c4cc;
  --border-subtle: rgba(192, 196, 204, 0.35);
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, Consolas, "Courier New", monospace;
}

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

html {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  overflow-wrap: anywhere;
  hyphens: auto;
}

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--accent-primary);
  text-underline-offset: 4px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover, a:focus-visible {
  color: var(--accent-primary);
}

h1, h2, h3, h4 {
  line-height: 1.2;
  margin-bottom: 1rem;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--silver);
}

p {
  margin-bottom: 1.15rem;
  max-width: 70ch;
}

.mono-label, .frame-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--silver);
  display: inline-block;
  margin-bottom: 0.5rem;
}

.frame-badge {
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.6rem;
  background: var(--bg-canvas);
  color: var(--accent-primary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.prose-wrapper {
  max-width: 70ch;
  margin: 0 auto;
}

/* Header: Static, Brand Far Left, Nav Centered Row Below */
.site-header {
  position: relative;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 0 0 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

.brand-mark {
  width: 24px;
  height: 24px;
  border: 2px solid var(--accent-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 1.35rem;
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  font-family: var(--font-mono);
}

.nav-bar {
  border-top: 1px solid rgba(192, 196, 204, 0.15);
  padding: 0.75rem 0;
  display: flex;
  justify-content: center;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 2.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-list a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--silver);
  padding: 0.25rem 0;
}

.nav-list a:hover, .nav-list a[aria-current="page"] {
  color: var(--accent-primary);
}

/* Buttons: Square-ended outlines, uppercase, letter-spaced */
.btn-outline {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--accent-primary);
  border-radius: 0;
  padding: 0.8rem 1.5rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s var(--ease-kinetic), color 0.2s var(--ease-kinetic), transform 0.2s var(--ease-kinetic);
}

.btn-outline:hover, .btn-outline:focus-visible {
  background-color: var(--accent-primary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-silver {
  border-color: var(--silver);
  color: var(--silver);
}

.btn-silver:hover, .btn-silver:focus-visible {
  background-color: var(--silver);
  color: var(--bg-canvas);
}

/* Section Alternating Backgrounds & Diagonal Clip Paths */
.section-block {
  padding: 5rem 0;
  position: relative;
}

.section-surface {
  background-color: var(--bg-surface);
  clip-path: polygon(0 3%, 100% 0, 100% 97%, 0 100%);
  padding: 6.5rem 0;
}

.section-canvas {
  background-color: var(--bg-canvas);
}

/* Split Layout */
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.split-row.reverse .split-text {
  order: 2;
}

.split-row.reverse .split-visual {
  order: 1;
}

/* Flat Cards with 1px silver borders, 20px radii, no shadows */
.card-flat, .visual-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: none;
  transition: border-color 0.25s var(--ease-kinetic), transform 0.25s var(--ease-kinetic);
}

.section-surface .card-flat, .section-surface .visual-panel {
  background-color: var(--bg-canvas);
}

.card-flat:hover {
  border-color: var(--accent-primary);
  transform: translateY(-3px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

/* Images */
.media-frame {
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  overflow: hidden;
  background-color: #121215;
  position: relative;
}

.media-frame img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 20px;
}

.ratio-16-9 img { aspect-ratio: 16 / 9; }
.ratio-4-3 img { aspect-ratio: 4 / 3; }
.ratio-1-1 img { aspect-ratio: 1 / 1; }

/* Interactive Loop Player Controls */
.loop-controller {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.loop-stage[data-playing="true"] img {
  outline: 2px solid var(--accent-primary);
}

/* Numbered Frame Strips */
.frame-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.frame-cell {
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 1rem;
  background: var(--bg-canvas);
}

.frame-cell .frame-num {
  font-family: var(--font-mono);
  color: var(--accent-primary);
  font-size: 0.8rem;
  display: block;
  margin-bottom: 0.4rem;
}

/* Comparison Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

th, td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--silver);
  background: rgba(192, 196, 204, 0.06);
}

/* Forms & Tools */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.tool-output {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: #070709;
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 1.25rem;
  white-space: pre-wrap;
  margin-top: 1rem;
  color: var(--silver);
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-canvas);
  padding: 3.5rem 0 2.5rem;
  font-size: 0.9rem;
  color: var(--silver);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--silver);
  text-decoration: none;
}

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

.footer-bottom {
  border-top: 1px solid rgba(192, 196, 204, 0.15);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: inline-block;
  }
  .nav-bar {
    display: none;
    padding: 1rem 0;
  }
  .nav-bar.is-open {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }
  .split-row, .split-row.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .split-row.reverse .split-text, .split-row.reverse .split-visual {
    order: unset;
  }
  .section-surface {
    clip-path: polygon(0 1%, 100% 0, 100% 99%, 0 100%);
    padding: 4rem 0;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}