/* Shared theme for Lotus of London — clean neutral dark palette, single accent */
:root {
  --bg: #0f1115;         /* near-black charcoal */
  --bg-2: #171a21;       /* raised surface */
  --bg-3: #1f232c;       /* hover / inset */
  --border: #2a2f3a;     /* subtle neutral border */
  --text: #e8eaed;       /* soft off-white */
  --text-dim: #9099a6;   /* muted gray */
  --accent: #5ec8c0;     /* calm teal, used sparingly */
  --accent-2: #3fa89f;   /* deeper teal */
  --gold: #c9b680;       /* restrained sand (secondary) */
  --green: #5bb98c;
  --red: #e5706e;
  --orange: #d8a05a;
  --radius: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Top navigation bar shared across pages */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-nav .brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.02em;
}
.site-nav .brand:hover { text-decoration: none; }
.site-nav .spacer { flex: 1; }
.site-nav a.nav-link {
  color: var(--text-dim);
  padding: 0.35rem 0.7rem;
  border-radius: 6px;
  font-size: 0.9rem;
}
.site-nav a.nav-link:hover { color: var(--text); background: var(--bg-3); text-decoration: none; }
.site-nav a.nav-link.active { color: var(--text); background: var(--bg-3); }

/* Generic buttons */
button {
  font-family: inherit;
  cursor: pointer;
}
.btn {
  background: var(--accent-2);
  color: #fff;
  border: none;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
}
.btn:hover { background: var(--accent); }
.btn.secondary {
  background: var(--bg-3);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn.secondary:hover { background: var(--border); }

/* Landing page */
.landing {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  text-align: center;
}
.landing h1 {
  font-size: 2.6rem;
  margin-bottom: 0.25rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.landing .tagline { color: var(--text-dim); font-size: 1.1rem; margin-bottom: 3rem; }
.app-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  text-align: left;
}
.app-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
}
.app-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

/* Preview thumbnail at the top of each card */
.app-card .preview {
  position: relative;
  background: linear-gradient(135deg, var(--bg-3), var(--bg-2));
  border-bottom: 1px solid var(--border);
  aspect-ratio: 320 / 150;
  overflow: hidden;
}
.app-card .preview svg {
  display: block;
  width: 100%;
  height: 100%;
}
.app-card:hover .preview svg { transform: scale(1.03); }
.app-card .preview svg { transition: transform 0.25s ease; }

/* Shared preview primitives */
.preview .pv-bg { fill: transparent; }
.preview .pv-cards rect {
  fill: var(--bg-3);
  stroke: var(--accent);
  stroke-width: 1.5;
  opacity: 0.9;
}
.preview .pv-check circle { fill: none; stroke: var(--accent); stroke-width: 2; }
.preview .pv-check circle.pv-open { stroke: var(--text-dim); }
.preview .pv-check path { stroke: var(--accent); stroke-width: 2; stroke-linecap: round; }
.preview .pv-check rect { fill: var(--text-dim); opacity: 0.5; }

/* Endstep preview */
.preview .pv-bars rect { fill: var(--accent-2); opacity: 0.65; }
.preview .pv-line { stroke: var(--gold); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.preview .pv-ring-track { stroke: var(--bg-3); stroke-width: 8; }
.preview .pv-ring-fill { stroke: var(--accent); stroke-width: 8; stroke-linecap: round; }
.preview .pv-ring-text { fill: var(--text); font-size: 16px; font-weight: 700; font-family: inherit; }

/* Cardle preview */
.preview .pv-tile { fill: var(--bg-3); stroke: var(--border); stroke-width: 1.5; }
.preview .pv-tile.pv-hit { stroke: var(--green); fill: rgba(75, 191, 123, 0.12); }
.preview .pv-arrow { stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.preview .pv-arrow.pv-up, .preview .pv-arrow.pv-down { stroke: var(--gold); }
.preview .pv-arrow.pv-ok { stroke: var(--green); }

.app-card .card-body { padding: 1.5rem 1.75rem 1.75rem; display: flex; flex-direction: column; flex: 1; }
.app-card h2 { margin: 0 0 0.6rem; font-size: 1.45rem; color: var(--text); }
.app-card p { color: var(--text-dim); margin: 0 0 1.25rem; flex: 1; }
.app-card .enter { color: var(--accent); font-weight: 600; }

.footer-note {
  margin-top: 3rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}