:root {
  color-scheme: light;
  --ink: #102a43;
  --muted: #627d98;
  --line: #d9e2ec;
  --surface: rgba(255, 255, 255, 0.94);
  --bg: #f3f7fa;
  --primary: #126e82;
  --primary-dark: #0b5263;
  --danger: #c63c3c;
  --warn: #b7791f;
  --safe: #21865b;
  --shadow: 0 14px 38px rgba(16, 42, 67, 0.09);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(18, 110, 130, 0.13), transparent 34rem),
    linear-gradient(180deg, #f8fbfd 0%, var(--bg) 100%);
}
button, input, select { font: inherit; }
button { cursor: pointer; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: calc(0.85rem + env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) 0.85rem max(1rem, env(safe-area-inset-left));
  color: white;
  background: rgba(16, 42, 67, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,.08);
}
.topbar h1 { margin: .15rem 0 0; font-size: clamp(1.1rem, 4vw, 1.45rem); }
.topbar .eyebrow { color: #b8e2e8; }
.top-actions { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: flex-end; }

main { width: min(1100px, 100%); margin: 0 auto; padding: 1rem max(1rem, env(safe-area-inset-right)) calc(5.5rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left)); }
.hidden { display: none !important; }
.eyebrow { margin: 0; color: var(--primary); font-size: .68rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.error { min-height: 1.25rem; color: var(--danger); font-size: .9rem; }

.panel {
  margin-bottom: 1rem;
  padding: 1.05rem;
  border: 1px solid rgba(188, 204, 220, 0.7);
  border-radius: 1.1rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.panel h2, .panel h3 { margin: .25rem 0 .55rem; }
.login-shell { display: grid; min-height: 70vh; place-items: center; }
.login-card { width: min(430px, 100%); padding: 1.4rem; }
.brand-mark { display: grid; width: 3.4rem; height: 3.4rem; place-items: center; border-radius: 1rem; color: white; background: linear-gradient(145deg, var(--primary), #54a6b5); font-weight: 900; letter-spacing: .08em; }

label { display: grid; gap: .4rem; color: #334e68; font-size: .82rem; font-weight: 750; }
input, select {
  width: 100%;
  min-height: 2.85rem;
  padding: .7rem .8rem;
  border: 1px solid #bcccdc;
  border-radius: .75rem;
  outline: none;
  color: var(--ink);
  background: white;
}
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(18,110,130,.12); }
.login-card label { margin: .85rem 0; }

.button {
  min-height: 2.55rem;
  padding: .58rem .9rem;
  border: 1px solid transparent;
  border-radius: .72rem;
  font-weight: 800;
  transition: transform .15s ease, background .15s ease;
}
.button:active { transform: translateY(1px); }
.button:disabled { cursor: wait; opacity: .55; }
.primary { color: white; background: var(--primary); }
.primary:hover { background: var(--primary-dark); }
.secondary { color: var(--primary-dark); border-color: #9bc6ce; background: #edf8fa; }
.danger { color: white; background: var(--danger); }
.danger-outline { color: var(--danger); border-color: #e8a9a9; background: #fff7f7; }
.ghost { color: white; border-color: rgba(255,255,255,.28); background: rgba(255,255,255,.08); }
.full { width: 100%; }
.button-row { display: flex; gap: .55rem; flex-wrap: wrap; }

.tabs {
  position: fixed;
  left: 50%;
  bottom: max(.65rem, env(safe-area-inset-bottom));
  z-index: 30;
  display: grid;
  width: min(94%, 520px);
  padding: .38rem;
  grid-template-columns: repeat(4, 1fr);
  transform: translateX(-50%);
  border: 1px solid rgba(188,204,220,.85);
  border-radius: 1rem;
  background: rgba(255,255,255,.94);
  box-shadow: 0 16px 50px rgba(16,42,67,.2);
  backdrop-filter: blur(14px);
}
.tab { min-height: 2.75rem; border: 0; border-radius: .7rem; color: var(--muted); background: transparent; font-weight: 800; }
.tab.active { color: white; background: var(--ink); }
.view { display: none; }
.view.active-view { display: block; }

.hero-panel, .section-heading, .session-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.diagnostic-form { display: grid; width: min(430px, 100%); gap: .75rem; }
.filter-grid { display: grid; grid-template-columns: 2fr 1.2fr 1fr .8fr auto; gap: .65rem; align-items: end; }
.manual-rule-form { display: grid; grid-template-columns: 1.5fr 1.5fr auto; gap: .7rem; align-items: end; }
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .65rem; margin: 1rem 0; }
.summary-card { padding: .8rem; border-radius: .8rem; background: #f0f4f8; }
.summary-card strong { display: block; font-size: 1.3rem; }

.query-list, .rule-list, .history-list { display: grid; gap: .68rem; margin-top: 1rem; }
.query-card, .rule-card, .history-card {
  display: grid;
  gap: .65rem;
  padding: .85rem;
  border: 1px solid var(--line);
  border-radius: .85rem;
  background: #fff;
}
.query-card { grid-template-columns: minmax(0, 1fr) auto; }
.domain { overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9rem; font-weight: 750; }
.meta { display: flex; gap: .45rem .8rem; flex-wrap: wrap; color: var(--muted); font-size: .74rem; }
.badge { display: inline-flex; align-items: center; width: fit-content; padding: .2rem .48rem; border-radius: 999px; font-size: .68rem; font-weight: 800; }
.badge.blocked { color: #8b2424; background: #ffe3e3; }
.badge.allowed { color: #176947; background: #dff5e9; }
.badge.risk { color: #8a5711; background: #fff0cf; }
.badge.hint { color: #315b79; background: #e3f2fd; }
.card-actions { display: flex; align-items: flex-start; gap: .45rem; flex-wrap: wrap; justify-content: flex-end; }
.card-actions .button { min-height: 2.1rem; padding: .4rem .62rem; font-size: .76rem; }
.guidance-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: .9rem; }
.guidance-grid > div { padding: .8rem; border-radius: .85rem; background: #f8fafc; }
.guidance-grid p { margin: .35rem 0 0; color: var(--muted); font-size: .8rem; }
.dot { display: inline-block; width: .62rem; height: .62rem; margin-right: .45rem; border-radius: 50%; }
.dot.safe { background: var(--safe); }.dot.warn { background: var(--warn); }.dot.neutral { background: #829ab1; }
.empty { padding: 1.5rem; text-align: center; color: var(--muted); border: 1px dashed #bcccdc; border-radius: .85rem; }
.toast { position: fixed; right: 1rem; bottom: 5.4rem; z-index: 50; max-width: min(88vw, 420px); padding: .8rem 1rem; border-radius: .8rem; color: white; background: var(--ink); box-shadow: var(--shadow); opacity: 0; transform: translateY(8px); pointer-events: none; transition: .2s ease; }
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 760px) {
  .topbar { align-items: flex-start; }
  .top-actions .button { min-height: 2.1rem; padding: .38rem .52rem; font-size: .7rem; }
  .hero-panel, .section-heading, .session-row { flex-direction: column; }
  .filter-grid, .manual-rule-form { grid-template-columns: 1fr; }
  .guidance-grid { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: repeat(3,1fr); }
  .query-card { grid-template-columns: 1fr; }
  .card-actions { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }