/* Tips Manager — plain-CSS design system (replaces the Next app's Tailwind).
   Small, hand-written; class names mirror the original component classes. */

:root {
  color-scheme: light;
  --brand-50: #eff6ff;
  --brand-100: #dbeafe;
  --brand-500: #3b82f6;
  --brand-600: #2563eb;
  --brand-700: #1d4ed8;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-900: #0f172a;
  --red-50: #fef2f2;
  --red-200: #fecaca;
  --red-600: #dc2626;
  --green-50: #f0fdf4;
  --green-700: #15803d;
  --amber-50: #fffbeb;
  --amber-200: #fde68a;
  --amber-700: #b45309;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--slate-100);
  color: var(--slate-900);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1 { font-size: 1.5rem; font-weight: 700; margin: 0 0 .25rem; }
h2 { font-size: 1.1rem; font-weight: 600; margin: 0 0 .75rem; }
h3 { font-size: .95rem; font-weight: 600; margin: 0 0 .5rem; }
p { margin: .25rem 0; }
small, .muted { color: var(--slate-500); }

/* Layout */
.app { display: flex; min-height: 100vh; flex-direction: column; }
.main { margin: 0 auto; width: 100%; max-width: 72rem; padding: 1.5rem 1rem; flex: 1; }
.header { border-bottom: 1px solid var(--slate-200); background: #fff; }
.nav { margin: 0 auto; max-width: 72rem; display: flex; align-items: center;
  gap: .25rem; padding: 0 1rem; flex-wrap: wrap; }
.brand { margin-right: 1rem; padding: .75rem 0; font-size: 1rem; font-weight: 700; color: var(--slate-900); }
.nav-link { border-radius: .5rem; padding: .5rem .75rem; font-size: .875rem;
  font-weight: 500; color: var(--slate-600); }
.nav-link:hover { background: var(--slate-100); }
.nav-link.active { background: var(--brand-50); color: var(--brand-700); }

/* Cards + grid */
.card { border-radius: .75rem; border: 1px solid var(--slate-200); background: #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,.05); padding: 1rem; }
.grid { display: grid; gap: 1rem; }
.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.stack > * + * { margin-top: 1rem; }
@media (max-width: 720px) {
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
}

/* Stat tiles */
.stat { padding: 1rem; }
.stat .k { font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--slate-500); }
.stat .v { font-size: 1.5rem; font-weight: 700; margin-top: .25rem; }

/* Buttons */
.btn, .btn-primary, .btn-secondary, .btn-danger {
  display: inline-flex; align-items: center; justify-content: center; gap: .375rem;
  border-radius: .5rem; padding: .5rem .75rem; font-size: .875rem; font-weight: 500;
  cursor: pointer; transition: background-color .12s, border-color .12s; border: 1px solid transparent;
  font-family: inherit; line-height: 1.25;
}
.btn:disabled, .btn-primary:disabled, .btn-secondary:disabled, .btn-danger:disabled {
  opacity: .5; cursor: not-allowed;
}
.btn-primary { background: var(--brand-600); color: #fff; }
.btn-primary:hover { background: var(--brand-700); }
.btn-secondary { border-color: var(--slate-300); background: #fff; color: var(--slate-700); }
.btn-secondary:hover { background: var(--slate-50); }
.btn-danger { border-color: var(--red-200); background: #fff; color: var(--red-600); }
.btn-danger:hover { background: var(--red-50); }
.btn-sm { padding: .25rem .5rem; font-size: .8rem; }

/* Forms */
.input, select.input, textarea.input {
  width: 100%; border-radius: .5rem; border: 1px solid var(--slate-300); background: #fff;
  padding: .5rem .625rem; font-size: .875rem; outline: none; font-family: inherit; color: inherit;
}
.input:focus { border-color: var(--brand-500); box-shadow: 0 0 0 2px var(--brand-100); }
.label { margin-bottom: .25rem; display: block; font-size: .875rem; font-weight: 500; color: var(--slate-700); }
.field { margin-bottom: .75rem; }
.input-sm { padding: .25rem .375rem; font-size: .8rem; width: auto; }
.checkline { display: flex; align-items: center; gap: .4rem; font-size: .875rem; }

/* Tables */
table { width: 100%; border-collapse: collapse; }
.th { padding: .5rem .75rem; text-align: left; font-size: .7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .04em; color: var(--slate-500); }
.td { padding: .5rem .75rem; font-size: .875rem; color: var(--slate-700); border-top: 1px solid var(--slate-100); }
.td.num, .th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--slate-50); }

/* Badges */
.badge { display: inline-flex; align-items: center; border-radius: 9999px;
  padding: .1rem .5rem; font-size: .72rem; font-weight: 500; }
.badge-green { background: var(--green-50); color: var(--green-700); }
.badge-amber { background: var(--amber-50); color: var(--amber-700); }
.badge-slate { background: var(--slate-100); color: var(--slate-600); }
.badge-red { background: var(--red-50); color: var(--red-600); }

/* Banners */
.banner { border-radius: .5rem; padding: .625rem .75rem; font-size: .875rem; margin-bottom: .75rem; }
.banner-warn { background: var(--amber-50); border: 1px solid var(--amber-200); color: var(--amber-700); }
.banner-error { background: var(--red-50); border: 1px solid var(--red-200); color: var(--red-600); }
.banner-ok { background: var(--green-50); border: 1px solid #bbf7d0; color: var(--green-700); }

/* Schedule grid */
.sched { border-collapse: collapse; width: 100%; }
.sched th, .sched td { border: 1px solid var(--slate-200); padding: .4rem; vertical-align: top; font-size: .82rem; }
.sched .cell { min-height: 3rem; }
.chip { display: inline-flex; align-items: center; gap: .3rem; background: var(--brand-50);
  color: var(--brand-700); border-radius: 9999px; padding: .1rem .5rem; font-size: .75rem; margin: .1rem 0; }
.chip.off { background: var(--amber-50); color: var(--amber-700); }
.chip .x { cursor: pointer; font-weight: 700; color: var(--slate-500); background: none; border: none; padding: 0; }

.spacer { flex: 1; }
.htmx-request.spin { opacity: .6; }
hr { border: none; border-top: 1px solid var(--slate-200); margin: 1rem 0; }