@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ── Design tokens ─────────────────────────────────────────── */
:root {
  --navy:        #16324F;
  --blue:        #245C8D;
  --teal:        #1F8A8A;
  --blue-light:  #EAF3F8;

  --bg:          #F7F9FC;
  --card:        #FFFFFF;
  --border:      #D9E1EA;
  --surface-muted: #EEF2F6;

  --text:        #1F2937;
  --text-muted:  #6B7280;

  --success:     #2E7D32;
  --warning:     #ED6C02;
  --danger:      #C62828;
  --info:        #0288D1;
  --inactive:    #7B8794;

  --sidebar-w:   260px;
  --header-h:    64px;
  --radius:      10px;
  --radius-sm:   8px;
}

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

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

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

/* ── Shell layout ───────────────────────────────────────────── */
.shell {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--navy);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-brand img {
  height: 36px;
  width: auto;
}

.sidebar-brand-text {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .3px;
  line-height: 1.2;
}

.sidebar-brand-text span {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: rgba(255,255,255,.55);
  letter-spacing: .5px;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
}

.nav-section-label {
  padding: 16px 20px 6px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: rgba(255,255,255,.75);
  font-size: 13.5px;
  font-weight: 500;
  transition: background .15s, color .15s;
  cursor: pointer;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
  text-decoration: none;
}

.nav-item.active {
  background: rgba(255,255,255,.1);
  color: #fff;
  border-left-color: var(--teal);
}

.nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: .8;
}

.nav-item.active svg,
.nav-item:hover svg { opacity: 1; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.1);
}

.role-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .4px;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
}

.role-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}

/* ── Main area ──────────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
  height: var(--header-h);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.header-search {
  position: relative;
}

.header-search input {
  width: 240px;
  padding: 7px 12px 7px 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: border-color .15s;
}

.header-search input:focus { border-color: var(--blue); }

.header-search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 15px;
  height: 15px;
}

.header-user {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.header-user-info {
  text-align: right;
  line-height: 1.3;
}

.header-user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.header-user-role {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: capitalize;
}

.header-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--blue-light);
  border: 2px solid var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
}

.header-logout {
  font-size: 13px;
  color: var(--text-muted);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color .15s, color .15s;
}

.header-logout:hover {
  border-color: var(--danger);
  color: var(--danger);
  text-decoration: none;
}

/* ── Page content ────────────────────────────────────────────── */
.content {
  flex: 1;
  padding: 28px;
}

.page-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 6px;
}

/* ── KPI cards ──────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.kpi-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 6px;
}

.kpi-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.kpi-card.status-warning .kpi-value { color: var(--warning); }
.kpi-card.status-danger  .kpi-value { color: var(--danger); }
.kpi-card.status-success .kpi-value { color: var(--success); }

/* ── Grid helpers ───────────────────────────────────────────── */
.row { display: grid; gap: 20px; margin-bottom: 24px; }
.col-8-4 { grid-template-columns: 2fr 1fr; }
.col-6-6 { grid-template-columns: 1fr 1fr; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3px;
}

.badge-success  { background: #E8F5E9; color: var(--success); }
.badge-warning  { background: #FFF3E0; color: var(--warning); }
.badge-danger   { background: #FFEBEE; color: var(--danger); }
.badge-info     { background: #E1F5FE; color: var(--info); }
.badge-inactive { background: var(--surface-muted); color: var(--inactive); }
.badge-teal     { background: #E0F4F4; color: var(--teal); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s;
  line-height: 1;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.btn-primary:hover { background: #1d4f7a; border-color: #1d4f7a; color: #fff; text-decoration: none; }

.btn-secondary {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}
.btn-secondary:hover { background: var(--blue-light); text-decoration: none; }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { background: #a21e1e; border-color: #a21e1e; color: #fff; text-decoration: none; }

.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 11px 28px; font-size: 15px; width: 100%; justify-content: center; }

/* ── Forms ──────────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--card);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(36, 92, 141, .1);
}

.form-control::placeholder { color: var(--text-muted); }

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}

/* ── Alert / messages ───────────────────────────────────────── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  border-left: 3px solid;
}
.alert-error   { background: #FFEBEE; color: var(--danger); border-color: var(--danger); }
.alert-success { background: #E8F5E9; color: var(--success); border-color: var(--success); }
.alert-info    { background: #E1F5FE; color: var(--info); border-color: var(--info); }

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

thead th {
  background: var(--surface-muted);
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background .1s;
  cursor: pointer;
}

tbody tr:hover { background: var(--blue-light); }

tbody td {
  padding: 10px 14px;
  color: var(--text);
  vertical-align: middle;
}

/* ── Login page ─────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(22, 50, 79, .08);
  padding: 40px 40px 36px;
  width: 100%;
  max-width: 420px;
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.login-logo img { height: 44px; width: auto; }

.login-heading {
  text-align: center;
  margin-bottom: 28px;
}

.login-heading h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.login-heading p {
  font-size: 13px;
  color: var(--text-muted);
}

.login-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

/* ── Placeholder sections ────────────────────────────────────── */
.placeholder-block {
  background: var(--surface-muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  min-height: 200px;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .main { margin-left: 0; }
  .col-8-4, .col-6-6 { grid-template-columns: 1fr; }
}