/* ============================================================
 * John Isaacson — Base Styles v2
 * Design system tokens + reset + typography + layout utilities
 * ============================================================ */

/* ── Google Fonts preloaded via functions.php ── */
/* Space Grotesk · Manrope · DM Mono */

/* ── Design Tokens (from approved design-pass v2) ── */
:root {
  /* Brand */
  --color-primary:        #E53E3E;
  --color-primary-hover:  #F56565;
  --color-accent:         #E53E3E;

  /* Backgrounds */
  --color-bg:             #09090B;
  --color-surface:        #111113;
  --color-surface-raised: #1A1A1F;

  /* Text */
  --color-text:           #FAFAFA;
  --color-text-secondary: #A1A1AA;
  --color-text-muted:     #71717A;

  /* Borders */
  --color-border:         rgba(255,255,255,0.08);
  --color-border-hover:   rgba(255,255,255,0.15);
  --color-border-subtle:  rgba(255,255,255,0.04);

  /* Typography */
  --font-display:  'Space Grotesk', system-ui, sans-serif;
  --font-body:     'Manrope', system-ui, sans-serif;
  --font-mono:     'DM Mono', 'JetBrains Mono', monospace;

  /* Font weights */
  --weight-display: 700;
  --weight-semibold: 600;
  --weight-medium:  500;
  --weight-body:    400;

  /* Border radius — 8px buttons, 12px cards */
  --radius-sm:  4px;
  --radius:     8px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-pill: 100px;

  /* Spacing */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 48px;
  --space-3xl: 72px;

  /* Layout */
  --max-width:     1060px;
  --section-pad-y:  60px;
  --section-pad-x:  24px;

  /* Transitions */
  --transition-fast:  0.15s ease;
  --transition-base:  0.25s ease;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Blueprint grid */
  --grid-dot-color: rgba(255, 255, 255, 0.04);
  --grid-size: 24px;
}

/* ── 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-body);
  font-weight: var(--weight-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul, ol { list-style: none; }

/* ── Subtle noise grain ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

/* ── Blueprint grid background pattern ── */
.has-grid-bg {
  background-image:
    radial-gradient(var(--grid-dot-color) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
}

.has-grid-lines {
  background-image:
    linear-gradient(var(--grid-dot-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-dot-color) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
}

/* ── Typography scale ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--color-text);
}

h1 { font-size: clamp(30px, 4vw, 52px); }
h2 { font-size: clamp(24px, 3vw, 36px); }
h3 { font-size: clamp(20px, 2.5vw, 26px); }
h4 { font-size: clamp(17px, 2vw, 21px); }

p { color: var(--color-text-secondary); line-height: 1.7; }

/* ── Mono / code elements ── */
.mono, code, .cli-text {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

.label-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: 4px 12px;
  border: 1px solid rgba(229, 62, 62, 0.3);
  background: rgba(229, 62, 62, 0.06);
  border-radius: 20px;
  margin-bottom: 14px;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Layout utilities ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-pad-y) var(--section-pad-x);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  padding: 5px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
}
.badge__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius);
  transition: all 0.2s var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(229, 62, 62, 0.25);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn--ghost {
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  background: transparent;
}
.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
  background: var(--color-surface);
}

/* ── Wireframe card pattern ── */
.wf-card {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  transition: border-color var(--transition-base);
}
.wf-card:hover { border-color: var(--color-primary); }

.wf-card::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px;
  width: 12px; height: 12px;
  border-top: 1.5px solid var(--color-primary);
  border-left: 1.5px solid var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.wf-card::after {
  content: '';
  position: absolute;
  bottom: -1px; right: -1px;
  width: 12px; height: 12px;
  border-bottom: 1.5px solid var(--color-primary);
  border-right: 1.5px solid var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.wf-card:hover::before,
.wf-card:hover::after { opacity: 1; }

/* ── Progress bar motif ── */
.progress-bar {
  height: 2px;
  background: var(--color-surface-raised);
  border-radius: 2px;
  overflow: hidden;
  margin: 8px 0;
}
.progress-bar__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Play button motif ── */
.play-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-primary);
  flex-shrink: 0;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 0 6px 10px;
  border-color: transparent transparent transparent currentColor;
  margin-left: 2px;
}
.play-icon:hover {
  border-color: var(--color-primary);
  background: rgba(229, 62, 62, 0.08);
}

/* ── Dividers ── */
.divider {
  height: 1px;
  background: var(--color-border-subtle);
  border: none;
  margin: 0;
}

/* ── Scroll reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
.reveal-d4 { transition-delay: 0.32s; }

/* ── Text colour utilities ── */
.t-red   { color: var(--color-primary); }
.t-muted { color: var(--color-text-muted); }
.t-secondary { color: var(--color-text-secondary); }
.t-mono  { font-family: var(--font-mono); }

/* ── Responsive base ── */
@media (max-width: 768px) {
  :root {
    --section-pad-y: 48px;
    --section-pad-x: 20px;
  }
}