:root {
  --bg: #eef3f8;
  --panel: #ffffff;
  --ink: #102033;
  --muted: #6a788b;
  --line: #dce5ef;
  --primary: #176b87;
  --primary-dark: #0f4f63;
  --accent: #f2b84b;
  --success: #168b63;
  --danger: #c2413a;
  --shadow: 0 18px 45px rgba(16, 32, 51, .08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Tahoma, Arial, sans-serif;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 280px;
  padding: 22px;
  background: #102033;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 22px;
  z-index: 20;
}
.menu-toggle {
  display: none;
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 40;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  place-items: center;
  box-shadow: var(--shadow);
}
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(16,32,51,.45);
  z-index: 15;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand.large { margin-bottom: 34px; }
.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #1b2838;
  font-weight: 800;
}
.brand span, .muted { color: var(--muted); }
.sidebar .brand span { color: #b6c2d0; display: block; margin-top: 3px; }
.nav { display: grid; gap: 8px; }
.nav a, .logout {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  color: #dbe7f3;
}
.nav-badge {
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: auto;
}
.nav a.active, .nav a:hover, .logout:hover { background: rgba(255,255,255,.1); color: #fff; }
.logout { margin-top: auto; }
.nav svg, .logout svg, .btn svg, .user-pill svg { width: 18px; height: 18px; }

.main {
  min-height: 100vh;
  padding: 28px;
  margin-left: 280px;
  min-width: 0;
}
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 22px;
}
h1, h2, h3 { margin: 0; }
h1 { font-size: 28px; }
h2 { font-size: 21px; }
h3 { font-size: 17px; margin-bottom: 14px; }
.eyebrow {
  margin: 0 0 7px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}
.user-pill, .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
}
.profile-link { display: inline-flex; align-items: center; gap: 8px; }
.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
}
.avatar.large { width: 86px; height: 86px; font-size: 34px; }
.logout-top { min-height: 34px; padding: 7px 10px; }
.profile-hero { display: flex; gap: 18px; align-items: center; margin-bottom: 22px; }
.message-list { display: grid; gap: 12px; }
.message-item { border: 1px solid var(--line); border-radius: 8px; padding: 14px; background: #f7fafc; }
.message-meta { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.danger-text { color: var(--danger); }
.inline-check { display: flex; align-items: center; gap: 8px; color: var(--ink); }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
  min-width: 0;
}
.panel-head, .actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.grid { display: grid; gap: 18px; min-width: 0; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.stat {
  padding: 18px;
  border-radius: 8px;
  background: #f7fafc;
  border: 1px solid var(--line);
}
.stat strong { display: block; font-size: 30px; margin-top: 6px; }

.filters, .form-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(130px, 1fr));
  gap: 12px;
  align-items: end;
}
.filters.log-filters { grid-template-columns: repeat(auto-fit, minmax(135px, 1fr)); }
.recipients-grid { max-height: 260px; }
.filters.single { grid-template-columns: minmax(240px, 1fr) auto; align-items: center; }
label { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 700; }
.input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
  outline: none;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(23,107,135,.12); }
.wide { grid-column: 1 / -1; }
.push { margin-right: auto; }
.btn {
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 700;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: #e9f2f6; color: var(--primary-dark); }
.btn.success { background: var(--success); color: #fff; }
.btn.full { width: 100%; margin-top: 12px; }

.tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--line);
  background: #f7fafc;
  border-radius: 8px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.hidden { display: none !important; }
.inline-fields { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 9px;
  max-height: 230px;
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.check-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 400;
}

.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
.panel canvas { max-width: 100%; }
.table-wrap.large { max-height: 68vh; }
table { width: 100%; border-collapse: collapse; white-space: nowrap; }
th, td { padding: 12px 13px; border-bottom: 1px solid var(--line); text-align: right; }
th { background: #f7fafc; position: sticky; top: 0; z-index: 1; color: #415168; }
tr:last-child td { border-bottom: 0; }
.search-input { margin-bottom: 12px; }
.accordion { padding: 0; overflow: hidden; }
.accordion summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-weight: 800;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary span { display: inline-flex; align-items: center; gap: 10px; }
.accordion[open] summary { border-bottom: 1px solid var(--line); }
.accordion[open] summary > svg { transform: rotate(180deg); }
.accordion > :not(summary) { margin: 18px 20px; }
.mini-form {
  display: grid;
  grid-template-columns: repeat(5, minmax(130px, 1fr)) auto auto;
  gap: 10px;
  align-items: end;
}
.mini-form.supervisor-form {
  grid-template-columns: minmax(220px, 320px) 1fr auto;
}
.panel-head.compact { margin-bottom: 12px; }
.row-actions {
  display: inline-flex;
  gap: 6px;
}
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
}
.icon-btn.danger { color: var(--danger); }
.icon-btn svg { width: 16px; height: 16px; }
.toast {
  position: fixed;
  left: 24px;
  bottom: 24px;
  background: #102033;
  color: #fff;
  padding: 13px 16px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.alert { padding: 12px; border-radius: 8px; margin-bottom: 14px; }
.alert.danger { background: #fee2e2; color: var(--danger); }

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(120deg, rgba(23,107,135,.92), rgba(16,32,51,.94)),
    url("https://images.unsplash.com/photo-1576091160550-2173dba999ef?auto=format&fit=crop&w=1600&q=80") center/cover;
}
.login-shell {
  width: min(1050px, 100%);
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 22px;
  align-items: stretch;
}
.login-visual, .login-card {
  border-radius: 8px;
  padding: 32px;
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow);
}
.login-visual {
  color: #fff;
  background: rgba(16,32,51,.62);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.login-visual h1 { font-size: 38px; max-width: 650px; line-height: 1.45; }
.login-stats { display: flex; gap: 10px; flex-wrap: wrap; }
.login-stats span, .demo-box {
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(255,255,255,.12);
}
.login-card h2 { margin-bottom: 18px; }
.login-card form { display: grid; gap: 12px; }
.demo-box {
  margin-top: 18px;
  background: #f7fafc;
  border: 1px solid var(--line);
  display: grid;
  gap: 6px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .menu-toggle { display: grid; }
  .sidebar {
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: min(82vw, 300px);
    max-width: 300px;
    transform: translateX(110%);
    transition: transform .2s ease;
    border-radius: 0;
    visibility: hidden;
    pointer-events: none;
  }
  body.sidebar-open .sidebar {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }
  body.sidebar-open .sidebar-backdrop { display: block; }
  .main { margin-left: 0; padding: 72px 18px 18px; }
  .grid.two, .login-shell { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters, .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters.log-filters, .mini-form.supervisor-form { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .user-pill { width: 100%; justify-content: space-between; }
  .stats-grid, .filters, .filters.single, .form-grid { grid-template-columns: 1fr; }
  .grid.two { grid-template-columns: minmax(0, 1fr); }
  .login-visual h1 { font-size: 28px; }
  .login-visual, .login-card, .panel { padding: 18px; }
  .accordion { padding: 0; }
  .mini-form { grid-template-columns: 1fr; }
  .inline-fields { grid-template-columns: 1fr; }
}