:root {
  --bg: #0f172a;
  --bg-soft: #1e293b;
  --card: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --primary-dark: #0284c7;
  --ok: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
  --code-bg: #0b1120;
  --radius: 10px;
}

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

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }

.hero {
  background: linear-gradient(135deg, #0c4a6e 0%, #0f172a 70%);
  border-bottom: 1px solid var(--border);
  padding: 40px 0 32px;
  text-align: center;
}
.hero h1 { font-size: 2.1rem; letter-spacing: 0.5px; }
.hero .tagline { color: var(--muted); max-width: 640px; margin: 10px auto 0; }
.hero strong { color: var(--primary); }

main.container { padding-top: 28px; padding-bottom: 40px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}
.card h2 { font-size: 1.05rem; color: var(--primary); margin: 18px 0 12px; }
.card h2:first-child { margin-top: 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }

.field label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 6px; }

input[type="number"], select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}
input:focus, select:focus { outline: 2px solid var(--primary-dark); border-color: var(--primary); }

.radios { display: flex; flex-direction: column; gap: 8px; padding-top: 8px; }
.radio { display: flex; align-items: center; gap: 8px; font-size: 0.92rem; cursor: pointer; }

.split-inputs { display: flex; gap: 8px; }
.split-inputs input { flex: 1; }

.hidden { display: none !important; }

.btn {
  display: inline-block;
  padding: 11px 18px;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: filter 0.15s;
}
.btn:hover { filter: brightness(1.15); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--primary-dark); color: #fff; font-weight: 600; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary-dark); }
.btn-small { padding: 4px 12px; font-size: 0.8rem; background: var(--primary-dark); color: #fff; }

.alert { padding: 12px 16px; border-radius: 6px; margin: 14px 0; font-size: 0.9rem; }
.alert-danger { background: rgba(248, 113, 113, 0.12); border: 1px solid var(--danger); color: var(--danger); }

.results-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.results-head h2 { margin: 0; }
.downloads { display: flex; gap: 10px; }

.capacity { margin-top: 16px; padding: 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-soft); }
.cap-line { font-size: 0.78rem; color: var(--muted); letter-spacing: 1px; margin-bottom: 6px; }
.cap-summary { margin: 6px 0 10px; }
.cap-rec { margin: 8px 0; }
.cap-rec code { background: var(--code-bg); padding: 2px 8px; border-radius: 4px; color: var(--primary); }
.cap-details { margin: 10px 0 0 18px; color: var(--muted); font-size: 0.9rem; }
.cap-details li { margin: 4px 0; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.badge-ok { background: rgba(74, 222, 128, 0.15); color: var(--ok); }
.badge-warn { background: rgba(251, 191, 36, 0.15); color: var(--warn); }
.badge-danger { background: rgba(248, 113, 113, 0.15); color: var(--danger); }

.warnings { margin: 16px 0; display: flex; flex-direction: column; gap: 8px; }
.warning { display: flex; gap: 10px; padding: 10px 14px; border-radius: 6px; font-size: 0.88rem; border: 1px solid; }
.warning-tag { font-weight: 700; white-space: nowrap; }
.warning-info { background: rgba(56, 189, 248, 0.08); border-color: var(--primary-dark); color: var(--primary); }
.warning-warning { background: rgba(251, 191, 36, 0.08); border-color: var(--warn); color: var(--warn); }
.warning-danger { background: rgba(248, 113, 113, 0.08); border-color: var(--danger); color: var(--danger); }

.tabs { display: flex; gap: 8px; margin: 20px 0 14px; flex-wrap: wrap; }
.tab {
  padding: 9px 18px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-soft);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.9rem;
}
.tab.active { background: var(--primary-dark); color: #fff; border-color: var(--primary-dark); font-weight: 600; }

.profile-title { font-size: 1.15rem; margin-bottom: 10px; }
.profile-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 8px; font-size: 0.88rem; color: var(--muted); }
.impact { color: var(--muted); font-size: 0.92rem; margin: 10px 0; }

.snippet { margin: 14px 0; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.snippet-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}
.snippet-name { color: var(--primary); font-size: 0.85rem; }
.snippet-body {
  background: var(--code-bg);
  padding: 14px;
  overflow-x: auto;
  font-size: 0.82rem;
  font-family: "JetBrains Mono", Consolas, monospace;
  line-height: 1.5;
}

.footer { border-top: 1px solid var(--border); padding: 20px 0; text-align: center; color: var(--muted); font-size: 0.82rem; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-soft);
  border: 1px solid var(--primary-dark);
  color: var(--text);
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  z-index: 100;
}

@media (max-width: 600px) {
  .hero h1 { font-size: 1.6rem; }
  .results-head { flex-direction: column; align-items: flex-start; }
}