/* finetune-floor — dark theme, dense data UI */
:root {
  --bg: #0a0a0b;
  --bg-2: #111114;
  --bg-3: #1a1a1f;
  --fg: #e8e8ec;
  --fg-dim: #9aa0a8;
  --fg-mute: #5b6068;
  --accent: #00d9ff;
  --accent-dim: #0099b8;
  --good: #4ade80;
  --bad: #ff6b6b;
  --warn: #fbbf24;
  --border: #2a2a32;
  --mono: 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
body { min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.92em; background: var(--bg-3); padding: 1px 5px; border-radius: 3px; color: var(--fg); }

.site-header {
  padding: 18px 28px 0;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0d0d10, var(--bg));
}
.brand { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.logo { font-family: var(--mono); font-size: 26px; font-weight: 700; letter-spacing: -1px; color: var(--accent); }
.logo span { color: var(--fg-dim); font-weight: 400; }
.tagline { color: var(--fg-dim); font-size: 13px; }

.tabs { display: flex; gap: 4px; margin-top: 18px; }
.tab {
  background: transparent; color: var(--fg-dim); border: none; padding: 10px 18px;
  font: inherit; font-size: 13px; cursor: pointer;
  border-bottom: 2px solid transparent; transition: all .15s;
}
.tab:hover { color: var(--fg); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

#app { padding: 24px 28px 60px; max-width: 1400px; width: 100%; margin: 0 auto; flex: 1; }

.stats-bar {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
  margin-bottom: 24px;
}
.stat {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 6px;
  padding: 12px 16px; display: flex; flex-direction: column; gap: 4px;
}
.stat .k { color: var(--fg-mute); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; }
.stat .v { color: var(--fg); font-size: 22px; font-weight: 600; font-family: var(--mono); }

.panel { background: var(--bg-2); border: 1px solid var(--border); border-radius: 8px; padding: 22px 24px; margin-bottom: 24px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 16px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; font-size: 18px; font-weight: 600; }

.filters { display: flex; gap: 12px; align-items: center; }
.filters label { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--fg-mute); text-transform: uppercase; letter-spacing: .5px; }
.filters select, .filters input, .calc-form select, .calc-form input {
  background: var(--bg-3); color: var(--fg); border: 1px solid var(--border);
  padding: 7px 10px; border-radius: 4px; font: inherit; font-size: 13px;
}
.filters select:focus, .filters input:focus, .calc-form select:focus, .calc-form input:focus {
  outline: none; border-color: var(--accent);
}

/* table */
.table-wrap { overflow-x: auto; }
.price-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.price-table th, .price-table td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.price-table th { color: var(--fg-mute); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: .8px; background: var(--bg-3); position: sticky; top: 0; }
.price-table td.num, .price-table th.num { text-align: right; font-family: var(--mono); }
.price-table tr:hover td { background: rgba(0, 217, 255, .04); }
.price-table .pill { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; background: var(--bg-3); color: var(--fg-dim); }
.price-table .pill.bucket-small  { background: rgba(74,222,128,.15); color: var(--good); }
.price-table .pill.bucket-medium { background: rgba(251,191,36,.15); color: var(--warn); }
.price-table .pill.bucket-large  { background: rgba(0,217,255,.15);  color: var(--accent); }
.price-table .pill.bucket-xl     { background: rgba(255,107,107,.15); color: var(--bad); }
.price-table .pill.method-lora { background: rgba(0,217,255,.1); color: var(--accent); }
.price-table .pill.method-full { background: rgba(255,107,107,.1); color: var(--bad); }
.price-table .pill.method-dpo  { background: rgba(251,191,36,.1); color: var(--warn); }
.price-table .null { color: var(--fg-mute); font-style: italic; }

/* calculator */
.calc-form {
  display: grid; grid-template-columns: 1fr 1fr 1fr 1fr auto; gap: 14px; align-items: end;
  margin-bottom: 22px;
}
.calc-form label { display: flex; flex-direction: column; gap: 5px; font-size: 11px; color: var(--fg-mute); text-transform: uppercase; letter-spacing: .5px; }
.calc-form label small { font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--fg-mute); margin-top: 2px; }
.calc-form button {
  background: var(--accent); color: var(--bg); border: none; padding: 10px 22px;
  font: inherit; font-weight: 600; font-size: 13px; border-radius: 4px; cursor: pointer;
}
.calc-form button:hover { background: #33e0ff; }

.calc-summary {
  background: var(--bg-3); border-left: 3px solid var(--accent); padding: 14px 18px;
  border-radius: 4px; margin-bottom: 20px; line-height: 1.6;
}
.calc-summary .big { font-size: 22px; font-weight: 600; color: var(--accent); font-family: var(--mono); }
.calc-summary .save { color: var(--good); font-weight: 600; }
.calc-summary .share-btn {
  background: var(--bg); border: 1px solid var(--border); color: var(--fg);
  padding: 6px 12px; font-size: 12px; border-radius: 4px; cursor: pointer; margin-left: 10px;
}
.calc-summary .share-btn:hover { border-color: var(--accent); }

.calc-results { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.result-card {
  background: var(--bg-3); border: 1px solid var(--border); border-radius: 6px;
  padding: 14px 16px; display: flex; flex-direction: column; gap: 8px;
}
.result-card.cheapest { border-color: var(--good); }
.result-card .provider { font-size: 11px; color: var(--fg-mute); text-transform: uppercase; letter-spacing: 1px; }
.result-card .name { font-weight: 600; }
.result-card .price { font-family: var(--mono); font-size: 26px; color: var(--accent); }
.result-card .rate { color: var(--fg-dim); font-size: 12px; font-family: var(--mono); }
.result-card .src { font-size: 11px; color: var(--fg-mute); }
.result-card.cheapest .badge { display: inline-block; padding: 2px 8px; background: var(--good); color: var(--bg); border-radius: 10px; font-size: 10px; font-weight: 700; letter-spacing: 1px; }

/* movers */
.movers-list { display: flex; flex-direction: column; gap: 8px; }
.mover {
  display: grid; grid-template-columns: 1fr auto auto auto; gap: 14px; align-items: center;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: 4px;
  padding: 10px 14px;
}
.mover.hike { border-left: 3px solid var(--bad); }
.mover.cut  { border-left: 3px solid var(--good); }
.mover .label { font-weight: 500; }
.mover .label small { color: var(--fg-mute); margin-left: 8px; }
.mover .from, .mover .to { font-family: var(--mono); font-size: 13px; color: var(--fg-dim); }
.mover .delta { font-family: var(--mono); font-weight: 600; font-size: 14px; }
.mover.hike .delta { color: var(--bad); }
.mover.cut  .delta { color: var(--good); }

/* providers grid */
.providers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.provider-card {
  background: var(--bg-3); border: 1px solid var(--border); border-radius: 6px;
  padding: 14px 16px; display: flex; flex-direction: column; gap: 8px;
}
.provider-card h3 { margin: 0; font-size: 15px; }
.provider-card .status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--fg-dim); }
.provider-card .status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fg-mute); }
.provider-card.ok .status .dot { background: var(--good); }
.provider-card.err .status .dot { background: var(--bad); }
.provider-card .meta { font-size: 12px; color: var(--fg-mute); display: flex; gap: 12px; flex-wrap: wrap; }
.provider-card .meta strong { color: var(--fg); font-family: var(--mono); }

/* methodology prose */
.prose { max-width: 760px; line-height: 1.7; color: var(--fg-dim); }
.prose h3 { color: var(--fg); margin-top: 24px; margin-bottom: 8px; font-size: 15px; }
.prose p { margin: 0 0 12px; }
.prose ul { margin: 0 0 12px; padding-left: 24px; }
.prose li { margin-bottom: 4px; }
.prose strong { color: var(--fg); }

.site-footer { text-align: center; padding: 30px 0 10px; color: var(--fg-mute); font-size: 11px; }

/* responsive */
@media (max-width: 900px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .calc-form { grid-template-columns: 1fr 1fr; }
  .site-header { padding: 14px 16px 0; }
  #app { padding: 16px 14px 50px; }
  .filters { flex-direction: column; align-items: flex-start; }
}