/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:      #1c2b3a;
  --navy-dark: #141f2b;
  --teal:      #0e7c7b;
  --teal-lt:   #e6f4f4;
  --amber-lt:  #fffbf0;
  --amber-bd:  #f5e7c0;
  --blue-lt:   #f0f5ff;
  --blue-bd:   #c8d8f8;
  --red:       #c0392b;
  --green:     #27ae60;
  --green-dk:  #1e8449;
  --gray-50:   #f8f9fa;
  --gray-100:  #f0f1f3;
  --gray-200:  #e2e4e8;
  --gray-400:  #9aa0ac;
  --gray-600:  #5a6170;
  --gray-800:  #2d3340;
  --text:      #1a1f2b;
  --font:      -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono:      'SF Mono', 'Fira Code', Consolas, monospace;
  --radius:    6px;
  --shadow:    0 1px 4px rgba(0,0,0,.1);
}

body {
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--gray-50);
  min-height: 100vh;
}

/* ── Login page ───────────────────────────────────────────────────────────── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--navy-dark);
}

.login-card {
  background: #fff;
  border-radius: 10px;
  padding: 2.5rem 2rem;
  width: 380px;
  box-shadow: 0 4px 24px rgba(0,0,0,.3);
}

.login-brand {
  display: flex;
  align-items: baseline;
  gap: .4rem;
  margin-bottom: 1.2rem;
}

.login-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: .2rem;
}

.login-subtitle {
  color: var(--gray-600);
  font-size: .85rem;
  margin-bottom: 1.6rem;
}

.login-error {
  background: #fef0f0;
  border: 1px solid #f0c0c0;
  color: var(--red);
  padding: .6rem .8rem;
  border-radius: var(--radius);
  font-size: .85rem;
  margin-bottom: 1rem;
}

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: .3rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.label-opt {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--gray-400);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .55rem .75rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font: inherit;
  font-size: .9rem;
  color: var(--text);
  background: #fff;
  transition: border-color .15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(14,124,123,.1);
}

.form-group--wide { flex: 1; }

.form-group--check {
  display: flex;
  align-items: flex-end;
  padding-bottom: .5rem;
}

.form-group--check label {
  display: flex;
  align-items: center;
  gap: .4rem;
  text-transform: none;
  letter-spacing: 0;
  font-size: .9rem;
  font-weight: normal;
  color: var(--text);
}

.btn-login {
  width: 100%;
  padding: .65rem;
  background: var(--teal);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font: inherit;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
  margin-top: .4rem;
}

.btn-login:hover { background: var(--green-dk); }

/* ── Brand ────────────────────────────────────────────────────────────────── */
.brand-link {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  text-decoration: none;
}
.brand-link:hover .brand-mumbrella { color: var(--teal-lt); }

.brand-mumbrella {
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}

.brand-tools {
  font-size: .75rem;
  font-weight: 500;
  color: rgba(255,255,255,.6);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.brand-sep { color: rgba(255,255,255,.3); font-size: .9rem; }

.brand-app {
  font-size: .95rem;
  font-weight: 600;
  color: rgba(255,255,255,.9);
}

.version {
  font-size: .7em;
  font-weight: 400;
  opacity: .7;
  vertical-align: super;
}

/* ── Header ───────────────────────────────────────────────────────────────── */
header {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(0,0,0,.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem 1.4rem;
}

.header-brand { display: flex; align-items: baseline; gap: .5rem; }
.header-user { display: flex; align-items: center; gap: .75rem; }

.username-label { color: rgba(255,255,255,.7); font-size: .85rem; }

.badge-editor {
  background: var(--teal);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  padding: .15rem .45rem;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.btn-logout {
  background: transparent;
  border: 1px solid rgba(255,255,255,.3);
  color: rgba(255,255,255,.7);
  padding: .3rem .7rem;
  border-radius: var(--radius);
  font: inherit;
  font-size: .8rem;
  cursor: pointer;
  transition: all .15s;
}

.btn-logout:hover { border-color: rgba(255,255,255,.6); color: #fff; }

/* ── Tab nav ──────────────────────────────────────────────────────────────── */
.tab-nav {
  background: var(--navy-dark);
  padding: 0 1.4rem;
  display: flex;
  gap: .1rem;
  border-bottom: 2px solid rgba(255,255,255,.08);
}

.tab-btn {
  background: transparent;
  border: none;
  color: rgba(255,255,255,.5);
  padding: .65rem 1.1rem;
  font: inherit;
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color .15s, border-color .15s;
}

.tab-btn:hover { color: rgba(255,255,255,.8); }
.tab-btn.active { color: #fff; border-bottom-color: var(--teal); }

/* ── Main layout ──────────────────────────────────────────────────────────── */
main { padding: 1.2rem 1.4rem; max-width: 1100px; }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn-primary {
  background: var(--teal);
  color: #fff;
  border: none;
  padding: .45rem 1rem;
  border-radius: var(--radius);
  font: inherit;
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
.btn-primary:hover { background: #0a6665; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary {
  background: #fff;
  color: var(--gray-800);
  border: 1px solid var(--gray-200);
  padding: .42rem .9rem;
  border-radius: var(--radius);
  font: inherit;
  font-size: .875rem;
  cursor: pointer;
  transition: background .15s;
  text-decoration: none;
  display: inline-block;
}
.btn-secondary:hover { background: var(--gray-100); }

.btn-danger {
  background: transparent;
  color: var(--red);
  border: 1px solid #f0c0c0;
  padding: .25rem .6rem;
  border-radius: 4px;
  font: inherit;
  font-size: .8rem;
  cursor: pointer;
  transition: all .15s;
}
.btn-danger:hover { background: #fef0f0; }

.btn-mini {
  font-size: .78rem;
  padding: .2rem .55rem;
}

/* ── Section headers ──────────────────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--gray-200);
  gap: 1rem;
}

.section-header h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-800);
}

.section-sub {
  font-size: .8rem;
  color: var(--gray-600);
  margin-top: .2rem;
}

.section-actions { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }

.inline-check {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .82rem;
  color: var(--gray-600);
}
.inline-check input { margin: 0; }

/* ── Rule list ───────────────────────────────────────────────────────────── */
.sg-category { margin-bottom: 1.4rem; }

.sg-category-title {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gray-600);
  padding: .35rem .75rem;
  background: var(--gray-100);
  border-radius: 4px;
  margin-bottom: .5rem;
}

.sg-rule {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .7rem .85rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: .45rem;
  transition: border-color .15s;
}
.sg-rule:hover { border-color: var(--gray-400); }
.sg-rule.inactive { opacity: .55; }

.sg-rule-main { flex: 1; }

.sg-rule-head {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .3rem;
  flex-wrap: wrap;
}

.sg-prio {
  font-size: .68rem;
  font-weight: 700;
  padding: .08rem .4rem;
  border-radius: 3px;
  background: var(--gray-200);
  color: var(--gray-800);
}
.sg-prio.p1 { background: #fde8e8; color: #8b1a1a; }
.sg-prio.p2 { background: #fdf0e3; color: #8a5a12; }
.sg-prio.p3 { background: var(--gray-200); color: var(--gray-800); }

.sg-scope {
  font-size: .68rem;
  font-weight: 600;
  padding: .08rem .4rem;
  border-radius: 3px;
  background: #e8edfd;
  color: #1a3a8b;
}
.sg-scope.everywhere { background: var(--teal-lt); color: var(--teal); }

.sg-rule-inactive-label {
  font-size: .68rem;
  color: var(--gray-400);
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.sg-rule-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .2rem;
}
.sg-rule-title.untitled {
  font-style: italic;
  font-weight: 400;
  color: var(--gray-400);
}

.sg-rule-text {
  font-size: .88rem;
  line-height: 1.5;
  color: var(--text);
}

.sg-rule-why {
  font-size: .8rem;
  line-height: 1.5;
  color: var(--gray-600);
  margin-top: .35rem;
}

.sg-rule-ex {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: .4rem;
  font-size: .8rem;
}
.sg-ex-correct { color: var(--green-dk); }
.sg-ex-incorrect { color: var(--red); }
.sg-ex-label { font-weight: 700; text-transform: uppercase; font-size: .65rem; letter-spacing: .05em; }

.sg-rule-id {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--gray-400);
  margin-top: .35rem;
}

.sg-rule-actions { display: flex; gap: .35rem; flex-shrink: 0; }

/* ── Rule / user form ────────────────────────────────────────────────────── */
.rule-form {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 1.2rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.rule-form-inner { padding: 1rem 1.2rem; }

.rule-form h3 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: .8rem;
}

.form-row {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.form-actions {
  display: flex;
  gap: .5rem;
  margin-top: .8rem;
}

/* ── History list ────────────────────────────────────────────────────────── */
.rev-item {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .6rem .8rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: .4rem;
}

.rev-action {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  padding: .1rem .4rem;
  border-radius: 3px;
  background: var(--gray-100);
  color: var(--gray-800);
  flex-shrink: 0;
}
.rev-action.create { background: #e8f5e9; color: #1a5c2a; }
.rev-action.delete { background: #fde8e8; color: #8b1a1a; }
.rev-action.revert { background: #f3e8fd; color: #5a1a8b; }
.rev-action.deactivate { background: #fdf0e3; color: #8a5a12; }

.rev-body { flex: 1; }
.rev-meta { font-size: .74rem; color: var(--gray-400); margin-top: .2rem; }
.rev-rule-text { font-size: .82rem; color: var(--gray-800); }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.users-table, .audit-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.users-table th, .audit-table th {
  background: var(--navy);
  color: #fff;
  padding: .5rem .75rem;
  text-align: left;
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.users-table td, .audit-table td {
  padding: .55rem .75rem;
  border-bottom: 1px solid var(--gray-200);
  font-size: .85rem;
}

.users-table tr:last-child td, .audit-table tr:last-child td { border-bottom: none; }
.users-table tr:hover td, .audit-table tr:hover td { background: var(--gray-50); }

.role-badge {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: .12rem .4rem;
  border-radius: 3px;
  background: var(--gray-200);
  color: var(--gray-800);
}
.role-badge.editor { background: var(--teal); color: #fff; }

.audit-action {
  font-family: var(--mono);
  font-size: .78rem;
  background: var(--gray-100);
  padding: .1rem .35rem;
  border-radius: 3px;
}

/* ── Utility ──────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

.loading-msg {
  color: var(--gray-600);
  font-style: italic;
  font-size: .85rem;
  padding: .8rem 0;
}

.toast {
  position: fixed;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--navy);
  color: #fff;
  padding: .6rem 1.1rem;
  border-radius: var(--radius);
  font-size: .85rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  z-index: 200;
}
.toast.error { background: var(--red); }