/* =========================================================================
   LSCentral — application theme
   -------------------------------------------------------------------------
   Themes Bootstrap 5.3 via its native color-mode system. Loaded AFTER
   bootstrap.min.css (see assets/app.js), so these overrides win.

   Rules baked in here:
     - Lemon (brand) is used for interactive/brand affordances ONLY:
       logo mark, active nav, focus rings, primary "Sign in" button.
     - Disk status is a SEPARATE green / amber(orange) / red scale so the
       brand yellow never gets mistaken for a "warning". Thresholds:
         < 75%  = ok (green)   75–89% = caution (orange)   >= 90% = critical (red)
       These match the existing template logic in monitoring/index & show.
   Colours are OKLCH; hairlines use color-mix; type scales with clamp().
   ========================================================================= */

/* ---- Design tokens (mode-independent) ---- */
:root {
  --ls-lemon:      oklch(0.86 0.17 98);
  --ls-lemon-deep: oklch(0.74 0.16 92);          /* readable on light surfaces */
  --ls-lemon-glow: oklch(0.86 0.17 98 / 0.28);
  --ls-ink:        oklch(0.16 0.012 260);

  --ls-ok:   oklch(0.72 0.15 155);   /* green  — < 75% */
  --ls-warn: oklch(0.73 0.16 60);    /* orange — 75–89% (deliberately NOT lemon) */
  --ls-crit: oklch(0.63 0.21 25);    /* red    — >= 90% */

  --ls-radius:    16px;
  --ls-radius-sm: 11px;

  --ls-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Menlo", monospace;

  color-scheme: light dark;
}

/* ---- Dark surfaces ---- */
[data-bs-theme="dark"] {
  color-scheme: dark;
  --bs-body-bg:    oklch(0.19 0.016 264);
  --bs-body-color: oklch(0.93 0.008 250);
  --bs-emphasis-color: oklch(0.98 0.008 250);
  --bs-link-color: var(--ls-lemon);
  --bs-link-hover-color: oklch(0.90 0.16 98);
  --bs-border-color: oklch(0.93 0.008 250 / 0.12);

  --ls-surface:   oklch(0.23 0.018 264);
  --ls-surface-2: oklch(0.26 0.02 264);
  --ls-border:    oklch(0.93 0.008 250 / 0.12);
  --ls-muted:     oklch(0.72 0.012 250);
  --ls-topbar:    oklch(0.20 0.016 264 / 0.72);
  --ls-track:     oklch(0.93 0.008 250 / 0.10);
  --ls-link:      var(--ls-lemon);
  --ls-glow-a:    oklch(0.86 0.17 98 / 0.10);
  --ls-glow-b:    oklch(0.55 0.13 260 / 0.14);
}

/* ---- Light surfaces ---- */
[data-bs-theme="light"] {
  color-scheme: light;
  --bs-body-bg:    oklch(0.985 0.006 95);
  --bs-body-color: oklch(0.24 0.015 262);
  --bs-emphasis-color: oklch(0.16 0.015 262);
  --bs-link-color: var(--ls-lemon-deep);
  --bs-link-hover-color: oklch(0.66 0.15 90);
  --bs-border-color: oklch(0.24 0.015 262 / 0.12);

  --ls-surface:   oklch(1 0 0);
  --ls-surface-2: oklch(0.975 0.006 95);
  --ls-border:    oklch(0.24 0.015 262 / 0.12);
  --ls-muted:     oklch(0.48 0.012 262);
  --ls-topbar:    oklch(1 0 0 / 0.72);
  --ls-track:     oklch(0.24 0.015 262 / 0.08);
  --ls-link:      var(--ls-lemon-deep);
  --ls-glow-a:    oklch(0.86 0.17 98 / 0.22);
  --ls-glow-b:    oklch(0.80 0.09 230 / 0.16);
}

/* ---- Base ---- */
body {
  min-height: 100vh;
  background:
    radial-gradient(60rem 40rem at 88% -10%, var(--ls-glow-a), transparent 60%),
    radial-gradient(50rem 40rem at -8% 8%, var(--ls-glow-b), transparent 55%),
    var(--bs-body-bg);
  background-attachment: fixed;
}
.mono { font-family: var(--ls-mono); font-variant-numeric: tabular-nums; }
.text-muted, .text-secondary { color: var(--ls-muted) !important; }
::selection { background: var(--ls-lemon-glow); }
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--ls-lemon-glow), 0 0 0 1.5px var(--ls-lemon);
  border-radius: 8px;
}

/* =========================================================================
   Theme toggle icon (driven by [data-bs-theme] on <html>)
   ========================================================================= */
.theme-icon-light { display: none; }
[data-bs-theme="light"] .theme-icon-dark  { display: none; }
[data-bs-theme="light"] .theme-icon-light { display: inline; }

/* =========================================================================
   Top bar
   ========================================================================= */
.ls-topbar {
  position: sticky; top: 0; z-index: 1030;
  background: var(--ls-topbar);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--ls-border);
}
.ls-brand {
  display: inline-flex; align-items: center; gap: .6rem;
  font-weight: 700; letter-spacing: -0.02em; font-size: 1.05rem;
  color: var(--bs-body-color); text-decoration: none;
}
.ls-brand .lemon {
  width: 26px; height: 26px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, var(--ls-lemon), oklch(0.80 0.16 78));
  box-shadow: 0 4px 14px var(--ls-lemon-glow);
  color: oklch(0.22 0.05 90); font-weight: 800; font-size: .82rem;
}
.ls-nav a {
  color: var(--ls-muted); text-decoration: none; font-weight: 500;
  font-size: .9rem; padding: .35rem .2rem; position: relative;
}
.ls-nav a:hover { color: var(--bs-body-color); }
.ls-nav a.active { color: var(--bs-body-color); }
.ls-nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -.9rem; height: 2px;
  background: var(--ls-lemon); border-radius: 2px;
}
.ls-userchip {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .3rem .3rem .3rem .7rem; border-radius: 999px;
  border: 1px solid var(--ls-border); background: var(--ls-surface);
  font-size: .82rem; color: var(--ls-muted);
}
.ls-avatar {
  width: 26px; height: 26px; border-radius: 999px; display: grid; place-items: center;
  background: color-mix(in oklab, var(--ls-lemon) 30%, var(--ls-surface-2));
  color: var(--bs-body-color); font-weight: 600; font-size: .74rem; text-transform: uppercase;
}
.ls-icon-btn {
  width: 38px; height: 38px; border-radius: 11px; border: 1px solid var(--ls-border);
  background: var(--ls-surface); color: var(--bs-body-color);
  display: grid; place-items: center; cursor: pointer;
  transition: background .18s ease, transform .18s ease; line-height: 1;
}
.ls-icon-btn:hover { background: var(--ls-surface-2); transform: translateY(-1px); }

/* =========================================================================
   Cards / bento
   ========================================================================= */
.ls-card {
  background: var(--ls-surface);
  border: 1px solid var(--ls-border);
  border-radius: var(--ls-radius);
  box-shadow: 0 1px 0 color-mix(in oklab, var(--bs-body-color) 4%, transparent),
              0 12px 30px -22px color-mix(in oklab, var(--ls-ink) 70%, transparent);
}
.ls-inst { transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.ls-inst:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--ls-lemon) 40%, var(--ls-border));
  box-shadow: 0 18px 40px -24px color-mix(in oklab, var(--ls-ink) 85%, transparent);
}
.ls-card-head {
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  padding: .9rem 1.1rem; border-bottom: 1px solid var(--ls-border);
}
.ls-card-body { padding: 1.1rem; }
.ls-inst-id { font-weight: 600; letter-spacing: -0.01em; text-decoration: none; color: var(--bs-body-color); }
.ls-inst-id:hover { color: var(--ls-link); }
.ls-region {
  font-family: var(--ls-mono); font-size: .68rem; color: var(--ls-muted);
  border: 1px solid var(--ls-border); border-radius: 6px; padding: .05rem .35rem;
}

/* KPI stat cards */
.ls-kpi { padding: 1rem 1.15rem; }
.ls-kpi .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ls-muted); }
.ls-kpi .value {
  font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.2rem); font-weight: 700;
  line-height: 1.1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums;
}
.ls-dot { width: 9px; height: 9px; border-radius: 999px; display: inline-block; }
.ls-dot.ok { background: var(--ls-ok); }
.ls-dot.warn { background: var(--ls-warn); }
.ls-dot.crit { background: var(--ls-crit); }

/* =========================================================================
   Filesystem rows + status
   ========================================================================= */
.fs-row { padding: .55rem 0; }
.fs-row + .fs-row { border-top: 1px dashed var(--ls-border); }
.fs-top { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.fs-mount { font-family: var(--ls-mono); font-size: .84rem; font-weight: 500; }
.fs-pct { font-family: var(--ls-mono); font-variant-numeric: tabular-nums; font-weight: 600; font-size: .84rem; }
.fs-meta { font-size: .74rem; color: var(--ls-muted); margin-top: .3rem; display: flex; gap: .6rem; flex-wrap: wrap; }

.ls-track {
  height: 8px; border-radius: 999px; background: var(--ls-track);
  overflow: hidden; margin-top: .4rem;
}
.ls-fill {
  height: 100%; border-radius: 999px;
  background-image: linear-gradient(90deg, color-mix(in oklab, var(--c) 80%, black 6%), var(--c));
  box-shadow: 0 0 12px -2px color-mix(in oklab, var(--c) 60%, transparent);
  transform-origin: left; animation: ls-grow .9s cubic-bezier(.22, 1, .36, 1) both;
}
.ls-fill.ok,   .fs-pct.ok   { --c: var(--ls-ok); }
.ls-fill.warn, .fs-pct.warn { --c: var(--ls-warn); }
.ls-fill.crit, .fs-pct.crit { --c: var(--ls-crit); }
.fs-pct.ok { color: var(--ls-ok); }
.fs-pct.warn { color: var(--ls-warn); }
.fs-pct.crit { color: var(--ls-crit); }

@keyframes ls-grow { from { transform: scaleX(0); } }

/* status pill */
.ls-pill {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .68rem; font-weight: 600; letter-spacing: .02em;
  padding: .12rem .5rem; border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--c) 45%, transparent);
  background: color-mix(in oklab, var(--c) 14%, transparent);
  color: var(--c);
}
.ls-pill.ok   { --c: var(--ls-ok); }
.ls-pill.warn { --c: var(--ls-warn); }
.ls-pill.crit { --c: var(--ls-crit); }
.ls-pill.none { --c: var(--ls-muted); }
.ls-pill .ls-dot { background: var(--c); }

/* =========================================================================
   Buttons
   ========================================================================= */
.btn-lemon {
  --c: var(--ls-lemon);
  background: linear-gradient(150deg, var(--ls-lemon), oklch(0.80 0.16 80));
  color: oklch(0.20 0.05 90); font-weight: 600; border: none;
  box-shadow: 0 8px 20px -10px var(--ls-lemon-glow);
}
.btn-lemon:hover, .btn-lemon:focus {
  filter: brightness(1.05); color: oklch(0.18 0.05 90); transform: translateY(-1px);
}
.btn-ghost {
  background: var(--ls-surface); border: 1px solid var(--ls-border); color: var(--bs-body-color);
}
.btn-ghost:hover { background: var(--ls-surface-2); color: var(--bs-body-color); }

/* search / plain inputs */
.ls-search {
  background: var(--ls-surface); border: 1px solid var(--ls-border);
  color: var(--bs-body-color); border-radius: 11px; padding: .5rem .85rem;
}
.ls-search::placeholder { color: var(--ls-muted); }
.ls-search:focus {
  outline: none; border-color: var(--ls-lemon); box-shadow: 0 0 0 3px var(--ls-lemon-glow);
}

/* =========================================================================
   Tables (per-instance history)
   ========================================================================= */
.ls-table-wrap {
  background: var(--ls-surface); border: 1px solid var(--ls-border);
  border-radius: var(--ls-radius); overflow: hidden;
}
.table.ls-table { margin: 0; color: var(--bs-body-color); --bs-table-bg: transparent; }
.ls-table thead th {
  font-size: .7rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--ls-muted); font-weight: 600; border-bottom: 1px solid var(--ls-border);
  background: var(--ls-surface-2);
}
.ls-table td, .ls-table th { border-color: var(--ls-border); padding: .6rem .9rem; vertical-align: middle; }
.ls-table tbody tr:hover td { background: color-mix(in oklab, var(--ls-lemon) 6%, transparent); }

/* =========================================================================
   Alerts (flash messages + form errors)
   -------------------------------------------------------------------------
   Overrides Bootstrap 5.3's per-variant colour/bg/border with tokenised
   tints. Same --c pattern used by .ls-pill / .ls-fill so success/danger/
   warning stay aligned with the disk-status scale, never with lemon.
   ========================================================================= */
.alert {
  border-radius: var(--ls-radius-sm);
  border: 1px solid color-mix(in oklab, var(--c, var(--ls-border)) 40%, var(--ls-border));
  background: color-mix(in oklab, var(--c, var(--ls-surface-2)) 12%, var(--ls-surface));
  color: var(--bs-body-color);
  padding: .75rem 1rem;
}
.alert-success { --c: var(--ls-ok); }
.alert-danger  { --c: var(--ls-crit); }
.alert-warning { --c: var(--ls-warn); }
.alert-info    { --c: var(--ls-muted); }

.alert-dismissible .btn-close {
  padding: .95rem 1rem;
  filter: none;
  opacity: .7;
}
.alert-dismissible .btn-close:hover { opacity: 1; }
[data-bs-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* =========================================================================
   Login / auth card
   ========================================================================= */
.ls-auth {
  width: 100%; max-width: 400px; margin-inline: auto; padding: 2rem;
  background: var(--ls-surface); border: 1px solid var(--ls-border);
  border-radius: 22px;
  box-shadow: 0 30px 70px -40px color-mix(in oklab, var(--ls-ink) 90%, transparent);
}
.lemon-lg {
  width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center;
  background: linear-gradient(150deg, var(--ls-lemon), oklch(0.80 0.16 78));
  box-shadow: 0 10px 26px -8px var(--ls-lemon-glow);
  color: oklch(0.20 0.05 90); font-weight: 800; font-size: 1.1rem;
}
.ls-label { font-size: .8rem; font-weight: 500; color: var(--ls-muted); margin-bottom: .35rem; }
.ls-auth .form-control {
  background: var(--ls-surface-2); border: 1px solid var(--ls-border);
  color: var(--bs-body-color); border-radius: 11px; padding: .6rem .8rem;
}
.ls-auth .form-control:focus {
  background: var(--ls-surface-2); color: var(--bs-body-color);
  border-color: var(--ls-lemon); box-shadow: 0 0 0 3px var(--ls-lemon-glow);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
