/* ============================================================
   BlankBit — Colors & Type
   ============================================================ */

@font-face {
  font-family: 'Geist';
  src: url('./fonts/Geist/Geist[wght].woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('./fonts/JetBrainsMono/JetBrainsMono-Variable.woff2') format('woff2-variations');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --bb-black:       #000000;
  --bb-bg:          #0A0A0B;
  --bb-surface-1:   #111114;
  --bb-surface-2:   #16161A;
  --bb-surface-3:   #1D1D22;
  --bb-line:        #26262C;
  --bb-line-strong: #36363E;
  --bb-mute:        #5A5A65;
  --bb-fg-3:        #7A7A85;
  --bb-fg-2:        #A8A8B3;
  --bb-fg-1:        #ECECEF;
  --bb-white:       #FFFFFF;

  --bb-lime:        #C6F73E;
  --bb-lime-soft:   #C6F73E1A;
  --bb-cyan:        #5CE5FF;
  --bb-magenta:     #FF3DD8;
  --bb-amber:       #FFB23D;
  --bb-coral:       #FF5C5C;
  --bb-violet:      #9D7CFF;

  --fg-1: var(--bb-fg-1);
  --fg-2: var(--bb-fg-2);
  --fg-3: var(--bb-fg-3);
  --fg-mute: var(--bb-mute);
  --fg-on-accent: var(--bb-black);

  --bg: var(--bb-bg);
  --bg-surface: var(--bb-surface-1);
  --bg-surface-hover: var(--bb-surface-2);
  --bg-surface-active: var(--bb-surface-3);

  --line: var(--bb-line);
  --line-strong: var(--bb-line-strong);

  --accent: var(--bb-lime);
  --accent-soft: var(--bb-lime-soft);
  --info: var(--bb-cyan);
  --warn: var(--bb-amber);
  --danger: var(--bb-coral);
  --success: var(--bb-lime);

  --font-sans: 'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --font-display: var(--font-sans);

  --fs-xs:   0.6875rem;
  --fs-sm:   0.8125rem;
  --fs-base: 0.9375rem;
  --fs-md:   1.0625rem;
  --fs-lg:   1.25rem;
  --fs-xl:   1.5rem;
  --fs-2xl:  2rem;
  --fs-3xl:  2.75rem;
  --fs-4xl:  4rem;
  --fs-5xl:  6rem;

  --lh-tight: 1.05;
  --lh-snug:  1.2;
  --lh-base:  1.5;
  --lh-loose: 1.7;

  --tracking-tight:  -0.03em;
  --tracking-snug:   -0.015em;
  --tracking-normal: 0;
  --tracking-wide:    0.04em;
  --tracking-mono:    0.02em;

  --r-xs: 2px;
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 10px;
  --r-xl: 16px;
  --r-pill: 999px;

  --s-1:  4px;
  --s-2:  8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  24px;
  --s-6:  32px;
  --s-7:  48px;
  --s-8:  64px;
  --s-9:  96px;

  --shadow-1: 0 1px 0 0 rgba(255,255,255,0.04) inset, 0 1px 2px rgba(0,0,0,0.4);
  --shadow-2: 0 8px 24px -8px rgba(0,0,0,0.6), 0 2px 4px rgba(0,0,0,0.4);
  --shadow-3: 0 24px 64px -16px rgba(0,0,0,0.8), 0 8px 16px rgba(0,0,0,0.5);
  --glow-lime:    0 0 0 1px var(--bb-lime), 0 0 24px -4px rgba(198,247,62,0.45);
  --glow-cyan:    0 0 0 1px var(--bb-cyan), 0 0 24px -4px rgba(92,229,255,0.45);
  --glow-magenta: 0 0 0 1px var(--bb-magenta), 0 0 24px -4px rgba(255,61,216,0.45);

  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 120ms;
  --dur-base: 200ms;
  --dur-slow: 360ms;
}

/* ============================================================
   Reset & base
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }

body {
  background: var(--bg);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--bb-lime); color: #000; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bb-line); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--bb-line-strong); }

/* ============================================================
   Animations
   ============================================================ */

@keyframes bb-cursor {
  0%, 50%      { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

@keyframes bb-dash-crawl {
  to { stroke-dashoffset: -200; }
}

/* ============================================================
   Layout
   ============================================================ */

.bb-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg-1);
  position: relative;
  overflow: hidden;
}

#bb-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.bb-contour-accent {
  animation: bb-dash-crawl 18s linear infinite;
}

/* ============================================================
   Header
   ============================================================ */

.bb-header {
  position: relative;
  z-index: 2;
  padding: 28px 32px;
  display: flex;
  align-items: center;
}

.bb-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fg-1);
}

.bb-logo-text {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ============================================================
   Main content
   ============================================================ */

.bb-main {
  flex: 1;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 32px 80px;
  text-align: center;
}

.bb-error-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}

.bb-headline {
  font-family: var(--font-sans);
  font-size: clamp(44px, 8vw, 112px);
  line-height: 1;
  letter-spacing: -0.035em;
  font-weight: 600;
  color: var(--fg-1);
  margin: 0;
  text-wrap: balance;
}

.bb-cursor {
  display: inline-block;
  width: 0.42em;
  height: 0.78em;
  background: var(--accent);
  margin-left: 0.12em;
  vertical-align: -0.06em;
  box-shadow: 0 0 24px rgba(198, 247, 62, 0.5);
  animation: bb-cursor 1.1s steps(1) infinite;
}

.bb-sub {
  margin-top: 24px;
  margin-bottom: 0;
  font-size: 17px;
  color: var(--fg-2);
}

/* ============================================================
   Footer
   ============================================================ */

.bb-footer {
  position: relative;
  z-index: 2;
  padding: 20px 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.bb-footer-link {
  color: var(--fg-3);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.bb-footer-link:hover { color: var(--fg-1); }

/* ============================================================
   Imprint
   ============================================================ */

.imprint-wrap {
  max-width: 560px;
  width: 100%;
}

.imprint-heading {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 var(--s-5);
}

.imprint-title {
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--lh-snug);
  margin: 0 0 var(--s-7);
  color: var(--fg-1);
}

.imprint-section {
  border-top: 1px solid var(--line);
  padding: var(--s-5) 0;
}

.imprint-section:last-of-type {
  border-bottom: 1px solid var(--line);
}

.imprint-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-3);
  margin: 0 0 var(--s-2);
}

.imprint-value {
  font-size: var(--fs-base);
  color: var(--fg-2);
  line-height: var(--lh-loose);
  margin: 0;
}

.imprint-value a {
  color: var(--bb-cyan);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklab, var(--bb-cyan) 30%, transparent);
  transition: border-color var(--dur-fast) var(--ease-out);
}

.imprint-value a:hover { border-bottom-color: var(--bb-cyan); }

.imprint-note {
  margin-top: var(--s-7);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--fg-3);
  line-height: var(--lh-loose);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 720px) {
  .bb-header { padding: 16px; }
  .bb-main   { padding: 32px 20px 32px; }
  .bb-footer { padding: 14px 16px; flex-wrap: wrap; gap: 10px; }
}