/* Skalexa base.css — layout, typography, theme tokens (Design Spec §7.2 light theme) */
:root {
  --bg: #f9fafb;
  --card: #ffffff;
  --text: #111827;
  --text-2: #374151;
  --muted: #6b7280;
  --border: #e5e7eb;
  --blue: #1a56db;
  --green: #047857;
  --orange: #b45309;
  --red: #b91c1c;
  --purple: #6d28d9;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- App shell ---- */
.app-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 800; font-size: 1.25rem; color: var(--text); letter-spacing: -.02em; }
.brand .mark { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, var(--blue), var(--purple)); display: inline-block; }

.nav { display: flex; gap: .25rem; align-items: center; }
.nav a {
  color: var(--text-2);
  padding: .5rem .8rem;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
}
.nav a:hover { background: #f3f4f6; text-decoration: none; }
.nav a.active { background: #eff4ff; color: var(--blue); }

.header-controls { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }

select, input[type="date"], input[type="text"], input[type="email"], input[type="password"] {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .5rem .7rem;
  border-radius: 8px;
  font-size: .88rem;
}
select:focus, input:focus { outline: 2px solid #bfd3ff; border-color: var(--blue); }

.container { padding: 1.5rem; max-width: 1440px; margin: 0 auto; }

.page-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 1rem; letter-spacing: -.01em; }
.muted { color: var(--muted); }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--border); background: var(--card); color: var(--text-2); padding: .45rem .8rem; border-radius: 8px; font-size: .85rem; font-weight: 600; cursor: pointer; }
.btn:hover { background: #f3f4f6; text-decoration: none; }
.btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-primary:hover { background: #1546b8; }
.btn-ghost { background: transparent; }
.btn-sm { padding: .3rem .55rem; font-size: .78rem; }

/* ---- Flash ---- */
.flash { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: .9rem; }
.flash.error { background: #fef2f2; color: var(--red); border: 1px solid #fecaca; }

@media (max-width: 768px) {
  .app-header { flex-wrap: wrap; height: auto; padding: .75rem 1rem; gap: .5rem; }
  .nav { order: 3; width: 100%; overflow-x: auto; }
  .container { padding: 1rem; }
}