/* ------------------------------------------------------------------------------------
   FiberPath – Carbon Fiber Theme 
   ------------------------------------------------------------------------------------ */

/* === Color Tokens === */
:root {
  /* Brand identity accents */
  --primary: #12a89a;
  --primary-muted: #75e3d8;

  --accent: #d8b534;
  --accent-soft: #f2e3ad;

  /* Neutral greyscale system */
  --bg: #0e0e0f;
  --bg-elevated: #1a1a1c;
  --border: #2a2a2d;
  --border-subtle: #111112;

  --text: #e3e3e6;
  --text-muted: #7e8087;
  --text-on-primary: #0d332f;

  --danger: #d57373;
  --warning: #d8b534;
}

/* ------------------------------------------------------------------------------------
   Carbon Fiber Background Pattern
   ------------------------------------------------------------------------------------ */

body {
  background: linear-gradient(27deg, #141414 5px, transparent 5px) 0 5px,
    linear-gradient(207deg, #141414 5px, transparent 5px) 10px 0px,
    linear-gradient(27deg, #1c1c1c 5px, transparent 5px) 0px 10px,
    linear-gradient(207deg, #1c1c1c 5px, transparent 5px) 10px 5px,
    linear-gradient(90deg, #191919 10px, transparent 10px),
    linear-gradient(
      #1e1e1e 25%,
      #181818 25%,
      #181818 50%,
      transparent 50%,
      transparent 75%,
      #222222 75%,
      #222222
    );
  background-color: #111;
  background-size: 20px 20px;

  margin: 0;
  font-family: system-ui, sans-serif;
  color: var(--text);
}

/* ------------------------------------------------------------------------------------
   Card
   ------------------------------------------------------------------------------------ */

.card {
  background: var(--bg-elevated);
  padding: 1.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  max-width: 720px;
  margin: 3.5rem auto;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 22px rgba(0, 0, 0, 0.35);
}

h1 {
  color: var(--primary);
  margin-top: 0;
  font-weight: 700;
}

/* ------------------------------------------------------------------------------------
   Buttons
   ------------------------------------------------------------------------------------ */

.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: 6px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background 0.18s ease, transform 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--primary);
  color: var(--text-on-primary);
}

.btn-primary:hover {
  background: #14afa0;
}

.btn-accent {
  background: var(--accent);
  color: #0f0f0f;
}

.btn-accent:hover {
  background: #d3b63b;
}

/* ------------------------------------------------------------------------------------
   Links
   ------------------------------------------------------------------------------------ */

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}