/* kevala site: shared design system. System fonts only, no external resources. */

:root {
  --bg: #07090d;
  --bg-2: #0b0e14;
  --surface: #0f131b;
  --surface-2: #141925;
  --surface-3: #1a2130;
  --border: #212a39;
  --border-2: #2c3749;
  --text: #e7ecf3;
  --text-2: #b8c2d1;
  --muted: #8591a5;
  --faint: #5d6879;
  --accent: #7aa2ff;
  --accent-2: #45e0c0;
  --accent-3: #c592ff;
  --good: #4fdc8e;
  --warn: #f6b85a;
  --bad: #ff6b7d;
  --grad: linear-gradient(100deg, #7aa2ff 0%, #45e0c0 55%, #c592ff 100%);
  --radius: 14px;
  --radius-s: 9px;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
code, kbd, pre, .mono { font-family: var(--mono); }
code { font-size: 0.88em; background: var(--surface-2); border: 1px solid var(--border); padding: 0.05em 0.35em; border-radius: 6px; }
kbd { font-size: 0.8em; background: var(--surface-3); border: 1px solid var(--border-2); border-bottom-width: 2px; padding: 0.05em 0.4em; border-radius: 5px; color: var(--text-2); }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.1rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
::selection { background: rgba(122, 162, 255, 0.35); }

.wrap { width: min(1180px, 100% - 40px); margin: 0 auto; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: 0.86rem; }
.tiny { font-size: 0.76rem; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hidden { display: none !important; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.stack > * + * { margin-top: 12px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  background: rgba(7, 9, 13, 0.72);
  border-bottom: 1px solid rgba(33, 42, 57, 0.7);
}
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 58px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 700; font-size: 1.08rem; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 24px; height: 24px; }
.nav-links { display: flex; gap: 18px; font-size: 0.9rem; }
.nav-links a { color: var(--text-2); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); text-decoration: none; }
.nav-gh { color: var(--text-2); font-size: 0.86rem; border: 1px solid var(--border-2); border-radius: 8px; padding: 5px 10px; }
.nav-gh:hover { color: var(--text); text-decoration: none; border-color: #3a475d; }
@media (max-width: 560px) { .nav-gh { display: none; } }
@media (max-width: 760px) { .nav-links .opt { display: none; } .nav .wrap { gap: 14px; } .nav-links { gap: 12px; } }

/* buttons and inputs */
.btn {
  appearance: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 0.9rem/1 var(--sans); color: var(--text);
  background: var(--surface-3); border: 1px solid var(--border-2);
  padding: 10px 15px; border-radius: 10px; cursor: pointer; white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, transform 0.08s, opacity 0.15s;
}
.btn:hover { background: #212a3b; border-color: #3a475d; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary { background: linear-gradient(180deg, #86abff, #5f88f2); border-color: #86abff; color: #07101f; }
.btn.primary:hover { background: linear-gradient(180deg, #98b8ff, #6c93f5); }
.btn.ghost { background: transparent; }
.btn.danger { color: #ffb3bd; }
.btn.small { padding: 7px 11px; font-size: 0.8rem; border-radius: 8px; }
.btn.on { border-color: var(--accent-2); color: var(--accent-2); background: rgba(69, 224, 192, 0.08); }
select, input[type="text"], input[type="url"], input[type="number"], textarea {
  font: 0.92rem/1.45 var(--sans); color: var(--text);
  background: var(--bg-2); border: 1px solid var(--border-2); border-radius: 10px;
  padding: 9px 11px; outline: none; transition: border-color 0.15s, box-shadow 0.15s;
}
select { padding-right: 28px; }
textarea { width: 100%; resize: vertical; }
select:focus, input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(122, 162, 255, 0.18); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
label.field { display: grid; gap: 5px; font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }

/* surfaces */
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.018), rgba(255, 255, 255, 0)) , var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.card.pad { padding: 20px; }
.panel { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-s); padding: 14px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; font: 600 0.72rem/1 var(--sans); letter-spacing: 0.03em;
  padding: 5px 8px; border-radius: 999px; background: var(--surface-3); border: 1px solid var(--border-2); color: var(--text-2); white-space: nowrap;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--faint); }
.badge.gpu { color: #c9fff1; border-color: rgba(69, 224, 192, 0.45); background: rgba(69, 224, 192, 0.1); }
.badge.gpu .dot { background: var(--accent-2); box-shadow: 0 0 8px var(--accent-2); }
.badge.cpu { color: #dfe6ff; border-color: rgba(122, 162, 255, 0.45); background: rgba(122, 162, 255, 0.1); }
.badge.cpu .dot { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.badge.warn { color: #ffe1b0; border-color: rgba(246, 184, 90, 0.4); background: rgba(246, 184, 90, 0.08); }
.badge.bad { color: #ffc2ca; border-color: rgba(255, 107, 125, 0.4); background: rgba(255, 107, 125, 0.08); }
.badge.good { color: #c4f7d9; border-color: rgba(79, 220, 142, 0.4); background: rgba(79, 220, 142, 0.08); }
.chip {
  font: 500 0.82rem/1 var(--sans); color: var(--text-2); background: var(--surface-2);
  border: 1px solid var(--border-2); border-radius: 999px; padding: 7px 11px; cursor: pointer; transition: all 0.15s;
}
.chip:hover { color: var(--text); border-color: #3a475d; }
.chip[aria-pressed="true"] { color: #07101f; background: var(--accent); border-color: var(--accent); }

/* code blocks */
.code { position: relative; background: #080b11; border: 1px solid var(--border); border-radius: var(--radius-s); overflow: hidden; }
.code pre { margin: 0; padding: 16px 18px; overflow-x: auto; font-size: 0.84rem; line-height: 1.65; color: #d6deea; }
.code .copy { position: absolute; top: 8px; right: 8px; }
.tok-k { color: #c592ff; } .tok-s { color: #7ee2b8; } .tok-c { color: #5d6879; font-style: italic; } .tok-f { color: #8fb2ff; } .tok-n { color: #f6b85a; }

/* model bar */
.modelbar { display: grid; gap: 12px; }
.modelbar .picks { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 10px; }
.model-opt {
  text-align: left; cursor: pointer; font: inherit; color: inherit; background: var(--surface-2);
  border: 1px solid var(--border-2); border-radius: 12px; padding: 11px 13px; display: grid; gap: 3px; transition: border-color 0.15s, background 0.15s;
}
.model-opt:hover { border-color: #3a475d; }
.model-opt[aria-checked="true"] { border-color: var(--accent); background: rgba(122, 162, 255, 0.07); box-shadow: 0 0 0 3px rgba(122, 162, 255, 0.12); }
.model-opt .t { font-weight: 700; font-size: 0.92rem; display: flex; gap: 8px; align-items: center; }
.model-opt .d { font-size: 0.78rem; color: var(--muted); line-height: 1.4; }
.modelbar .ctl { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.modelbar .status { font-size: 0.82rem; color: var(--muted); min-height: 1.3em; }
.modelbar .foot { display: flex; gap: 10px; align-items: baseline; justify-content: space-between; }
.modelbar .foot .act-clear { flex: none; padding: 2px 0; border: 0; background: none; color: var(--faint); font-size: 0.74rem; }
.modelbar .foot .act-clear:hover { color: var(--text-2); background: none; }
.modelbar .status b { color: var(--text-2); font-weight: 600; }
.modelbar.compact .picks { display: none; }
.progress { height: 8px; border-radius: 99px; background: var(--surface-3); overflow: hidden; position: relative; }
.progress > i { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--grad); border-radius: 99px; transition: width 0.2s ease-out; }
.progress.indet > i { width: 35% !important; animation: indet 1.2s ease-in-out infinite; }
@keyframes indet { 0% { left: -35%; } 100% { left: 100%; } }

/* layout helpers */
section { padding: 76px 0; }
section.tight { padding: 44px 0; }
.eyebrow { font: 700 0.74rem/1 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 14px; }
.lede { font-size: 1.08rem; color: var(--text-2); max-width: 64ch; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 960px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } section { padding: 52px 0; } }
table.data { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
table.data th, table.data td { padding: 9px 12px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
table.data th { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted); font-weight: 700; }
table.data td.num, table.data th.num { text-align: right; font-family: var(--mono); }
.scroll-x { overflow-x: auto; }
footer.site { border-top: 1px solid var(--border); padding: 34px 0 46px; color: var(--muted); font-size: 0.85rem; }
footer.site .wrap { display: flex; gap: 20px; flex-wrap: wrap; justify-content: space-between; }
.notice { border: 1px solid rgba(246, 184, 90, 0.35); background: rgba(246, 184, 90, 0.07); color: #ffe1b0; border-radius: 10px; padding: 10px 12px; font-size: 0.84rem; }
.error { border: 1px solid rgba(255, 107, 125, 0.4); background: rgba(255, 107, 125, 0.08); color: #ffc2ca; border-radius: 10px; padding: 10px 12px; font-size: 0.84rem; }

/* page header for demo pages */
.page-head { padding: 34px 0 18px; }
.page-head h1 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: 8px; }
.page-head p { color: var(--text-2); max-width: 70ch; margin: 0; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.grid-2 > *, .grid-3 > *, .grid-4 > * { min-width: 0; }