/**
 * mockup-base.css — BlackRoad OS Design System
 * Pure black and white. No color. No gradients.
 * All mockups link this file.
 */

:root {
  --g:         linear-gradient(90deg, #ffffff, #ffffff);
  --g135:      linear-gradient(135deg, #ffffff, #ffffff);
  --grad:      var(--g);
  --grad-tint: linear-gradient(90deg, rgba(255,255,255,.06), rgba(255,255,255,.06));

  --bg:       #000000;
  --card:     #0a0a0a;
  --elevated: #111111;
  --hover:    #181818;

  --s1: #0a0a0a;
  --s2: #111111;
  --s3: #1a1a1a;
  --s4: #222222;
  --s5: #2a2a2a;
  --s6: #333333;

  --border: #1a1a1a;

  --text:  #f5f5f5;
  --sub:   #737373;
  --muted: #444444;
  --dim:   #525252;
  --white: #ffffff;
  --white80: rgba(255,255,255,0.80);
  --white60: rgba(255,255,255,0.60);
  --white40: rgba(255,255,255,0.40);
  --white20: rgba(255,255,255,0.20);
  --white10: rgba(255,255,255,0.10);
  --white05: rgba(255,255,255,0.05);

  --green:     #ffffff;
  --green-dim: rgba(255,255,255,0.10);
  --amber:     #999999;
  --amber-dim: rgba(255,255,255,0.08);
  --red:       #666666;
  --red-dim:   rgba(255,255,255,0.06);
  --blue:      #cccccc;
  --blue-dim:  rgba(255,255,255,0.08);

  --sg: 'Space Grotesk', -apple-system, sans-serif;
  --jb: 'JetBrains Mono', 'Courier New', monospace;
  --in: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sg);
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--text); text-decoration: none; }
button { font-family: var(--sg); cursor: pointer; }

::-webkit-scrollbar       { width: 3px; height: 3px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb { background: #1a1a1a; border-radius: 2px; }

.grad-bar { height: 3px; background: var(--white); }
.grad-text { color: var(--white); }

.br-nav {
  position: fixed; top: 3px; left: 0; right: 0; z-index: 100; padding: 0 24px;
}
.br-nav-inner {
  max-width: 1000px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px;
  background: rgba(0,0,0,.9); backdrop-filter: blur(16px);
  border: 1px solid var(--border); border-radius: 10px;
}
.br-nav-logo {
  font-weight: 700; font-size: 16px; color: var(--white);
  display: flex; align-items: center; gap: 10px; text-decoration: none;
}
.br-nav-logo-bar { width: 20px; height: 3px; border-radius: 2px; background: var(--white); }
.br-nav-links { display: flex; gap: 24px; }
.br-nav-links a { font-size: 12px; font-weight: 500; color: var(--sub); transition: color .15s; text-decoration: none; }
.br-nav-links a:hover { color: var(--white); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 6px; font-weight: 600; font-size: 12px;
  border: none; transition: all .15s; font-family: var(--sg); cursor: pointer;
}
.btn-white  { background: var(--white); color: #000; }
.btn-white:hover { background: #e5e5e5; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: #444; }
.btn-lg { padding: 13px 32px; font-size: 14px; border-radius: 8px; }

.br-section { padding: 72px 0; }
.br-container { max-width: 1000px; width: 100%; margin: 0 auto; padding: 0 24px; }
.br-section-num   { font-family: var(--jb); font-size: 10px; color: var(--muted); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 8px; }
.br-section-title { font-weight: 700; font-size: 28px; color: var(--white); margin-bottom: 8px; }
.br-section-desc  { font-size: 14px; color: var(--sub); max-width: 460px; line-height: 1.7; }
.br-divider { height: 1px; background: var(--border); }

.br-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: 28px 24px; transition: border-color .15s;
}
.br-card:hover { border-color: #333; }

.br-card-featured { border-color: #333; position: relative; }
.br-card-featured::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--white); border-radius: 8px 8px 0 0;
}

.br-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; background: var(--card);
  border: 1px solid var(--border); border-radius: 5px; transition: border-color .15s;
}
.br-pill:hover { border-color: #333; }

.br-window { background: var(--card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.br-window-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px; background: var(--elevated);
  border-bottom: 1px solid var(--border);
}
.br-dot      { width: 8px; height: 8px; border-radius: 50%; }
.br-dot-red  { background: #666666; }
.br-dot-yel  { background: #999999; }
.br-dot-grn  { background: #cccccc; }
.br-window-title { margin-left: 8px; font-family: var(--jb); font-size: 10px; color: var(--muted); }