:root {
  --color-primary: #0f172a;
  --color-accent: #14b8a6;
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-active: #16a34a;
  --color-expiring: #f59e0b;
  --color-expired: #dc2626;
  --color-paused: #64748b;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 28px rgba(15, 23, 42, 0.08);

  --h1: 30px;
  --h2: 24px;
  --h3: 19px;
  --h4: 16px;
  --body: 14px;
  --small: 12px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 { margin: 0; color: var(--color-primary); font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: var(--h1); }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }
h4 { font-size: var(--h4); }
small { color: var(--color-muted); font-size: var(--small); display: block; }
a { color: inherit; text-decoration: none; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 276px 1fr;
}

.sidebar {
  background: var(--color-primary);
  color: #cbd5e1;
  padding: var(--space-5) var(--space-4);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 0 var(--space-5);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}
.brand-logo, .auth-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  object-fit: cover;
}
.brand-fallback, .auth-logo-fallback {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: rgba(20, 184, 166, 0.15);
  color: var(--color-accent);
  font-size: 20px;
  font-weight: 700;
}
.brand h1 { font-size: 14px; color: #f1f5f9; line-height: 1.25; }
.brand p { margin: 0; color: #94a3b8; font-size: var(--small); }

.nav-menu { margin-top: var(--space-4); display: grid; gap: var(--space-1); }
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: #cbd5e1;
  transition: all 180ms ease;
}
.nav-link:hover { background: rgba(148, 163, 184, 0.14); }
.nav-link.active {
  background: rgba(20, 184, 166, 0.16);
  color: #ecfeff;
  border: 1px solid rgba(20, 184, 166, .45);
}
.nav-icon {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  background: rgba(148, 163, 184, 0.16);
}
.nav-badge {
  margin-left: auto;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 11px;
  background: var(--color-expired);
  color: #fff;
}

.sidebar-user {
  margin-top: var(--space-5);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.content {
  min-width: 0;
  padding: var(--space-6) var(--space-8);
}
.page-wrap {
  max-width: 1360px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-4);
}

.topbar {
  max-width: 1360px;
  margin: 0 auto var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.topbar-left { display: flex; align-items: center; gap: var(--space-3); }
.global-search input { min-width: 220px; }
.page-title { font-size: var(--h2); margin-bottom: var(--space-1); }
.page-subtitle { margin: 0; color: var(--color-muted); font-size: var(--small); }
.topbar-actions { display: flex; align-items: center; gap: var(--space-2); }

.icon-btn,
.btn {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: var(--color-card);
  color: var(--color-text);
  cursor: pointer;
  transition: all 160ms ease;
  box-shadow: var(--shadow-sm);
}
.icon-btn:hover,
.btn:hover { transform: translateY(-1px); }
.btn { font-weight: 600; }
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.btn-secondary { background: #fff; color: var(--color-text); }
.btn-danger { background: var(--color-expired); border-color: var(--color-expired); color: #fff; }

.notify-pill {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid #bae6fd;
  border-radius: 999px;
  padding: 7px 10px;
  color: #0f172a;
  background: #f0fdfa;
}
.notify-pill strong {
  width: 20px;
  height: 20px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 11px;
  color: #fff;
  background: var(--color-expired);
}

.user-menu { position: relative; }
.user-menu-btn {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-card);
  padding: 7px 10px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}
.user-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 190px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-md);
  display: none;
  z-index: 20;
}
.user-menu.open .user-menu-panel { display: block; }
.user-menu-panel a {
  display: block;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
}
.user-menu-panel a:last-child { border-bottom: 0; }
.user-menu-panel a:hover { background: #f8fafc; }

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
}
.hero-card p { margin: var(--space-2) 0 0; color: var(--color-muted); }

.grid { display: grid; gap: var(--space-4); }
.cards-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.stats-grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.stats-grid.compact { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.stat-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: center;
}
.stat-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 14px;
  background: #ccfbf1;
  color: #115e59;
}
.stat-icon.warning { background: #fef3c7; color: #92400e; }
.stat-card h4 { font-size: var(--small); color: var(--color-muted); margin: 0; }
.stat-card p { font-size: 26px; margin: 2px 0 4px; font-weight: 800; color: var(--color-primary); }
.trend { font-size: var(--small); }
.trend.up { color: var(--color-active); }
.trend.down { color: var(--color-expired); }
.trend.neutral { color: var(--color-expiring); }

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.table-tools { display: flex; flex-wrap: wrap; gap: var(--space-2); }

.table-wrap {
  overflow: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}
.data-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: #fff;
}
.data-table thead { background: #f1f5f9; }
.data-table th,
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
.data-table th {
  color: #475569;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}
.data-table tbody tr:hover { background: #f8fafc; }
.data-table tbody tr.workload-high { background: #fffbeb; }
.data-table tbody tr.task-overdue { background: #fff1f2; }

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: capitalize;
}
.badge.success { background: #dcfce7; color: #166534; }
.badge.warning { background: #fef3c7; color: #b45309; }
.badge.danger { background: #fee2e2; color: #991b1b; }
.badge.muted { background: #e2e8f0; color: #334155; }
.countdown-badge {
  display: inline-block;
  margin-top: 3px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  background: #ccfbf1;
  color: #0f766e;
}
.countdown-badge.warning { background: #fef3c7; color: #92400e; }
.countdown-badge.danger { background: #fee2e2; color: #b91c1c; }

form { margin: 0; }
label.field,
.form-label { display: grid; gap: var(--space-1); font-weight: 600; color: #334155; font-size: var(--small); }
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--space-3);
}
input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  background: #fff;
  color: var(--color-text);
}
textarea { min-height: 88px; resize: vertical; }
input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
  outline: none;
}
.inline-form { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.quick-actions { display: grid; gap: 6px; }
.mini-form { display: grid; gap: var(--space-2); min-width: 220px; margin-top: var(--space-2); }
.summary-btn,
.summary-link { cursor: pointer; font-weight: 700; color: #0f766e; }
.spaced-top { margin-top: var(--space-3); }

.alert {
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: var(--space-3);
  border: 1px solid var(--color-border);
}
.alert.error { background: #fff1f2; color: #9f1239; border-color: #fecdd3; }
.alert.success { background: #ecfdf5; color: #14532d; border-color: #86efac; }

.list-compact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}
.list-compact li {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  background: #fff;
}
.empty-state {
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: var(--space-6);
  color: var(--color-muted);
  text-align: center;
}

.avatar { width: 34px; height: 34px; border-radius: 999px; object-fit: cover; }
.avatar-lg { width: 76px; height: 76px; border-radius: var(--radius-md); }
.profile-header { display: flex; align-items: center; gap: var(--space-4); }
.password-meter { font-size: var(--small); color: var(--color-muted); }

.auth-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--color-bg);
}
.auth-shell { width: 100%; max-width: 460px; padding: var(--space-4); }
.auth-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: var(--space-7);
}
.auth-brand { text-align: center; margin-bottom: var(--space-5); }
.auth-brand h1 { font-size: 26px; margin: var(--space-3) 0 var(--space-1); }
.auth-brand p { margin: 0; color: var(--color-muted); font-size: 13px; }
.auth-logo, .auth-logo-fallback { margin: 0 auto; }
.auth-form { display: grid; gap: var(--space-3); }
.password-wrap { display: grid; grid-template-columns: 1fr auto; gap: var(--space-2); }
.toggle-password {
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: #fff;
  cursor: pointer;
}

.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 60;
  display: grid;
  gap: var(--space-2);
}
.toast {
  background: #0f172a;
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  min-width: 220px;
  box-shadow: var(--shadow-md);
}
.toast.success { background: #065f46; }
.toast.error { background: #991b1b; }

.modal {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(15, 23, 42, 0.42);
  z-index: 70;
}
.modal.show { display: grid; }
.modal-card {
  width: min(440px, 94vw);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
}
.modal-actions { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-3); }
.modal-card .form-grid .modal-actions { grid-column: 1 / -1; }

.loading-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(15, 23, 42, 0.2);
  z-index: 80;
}
.loading-overlay.show { display: grid; }
.spinner {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 3px solid #cbd5e1;
  border-top-color: var(--color-accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.table-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.table-pagination .pager-buttons { display: flex; gap: var(--space-2); }
.is-filtered-out { display: none !important; }

canvas.bar-chart,
canvas.line-chart {
  width: 100%;
  height: 290px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: #fcfdff;
}

.sidebar-collapsed .app-shell { grid-template-columns: 92px 1fr; }
.sidebar-collapsed .brand-text,
.sidebar-collapsed .nav-label,
.sidebar-collapsed .nav-badge,
.sidebar-collapsed .sidebar-user div { display: none; }
.sidebar-collapsed .sidebar-user,
.sidebar-collapsed .nav-link { justify-content: center; }

.mobile-nav { display: none; }

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: -300px;
    width: 276px;
    z-index: 40;
    transition: left .2s ease;
  }
  .mobile-sidebar-open .sidebar { left: 0; }
  .content { padding: var(--space-4); }
  .topbar {
    position: sticky;
    top: 0;
    background: var(--color-bg);
    padding-bottom: var(--space-2);
    z-index: 30;
    flex-wrap: wrap;
  }
  .topbar-left { width: 100%; justify-content: space-between; }
  .global-search { width: 100%; }
  .global-search input { width: 100%; min-width: 0; }
  .topbar-actions { width: 100%; justify-content: flex-end; }
  .notify-pill span { display: none; }
  .btn, .icon-btn, input, select, textarea { min-height: 42px; }
}

@media (max-width: 640px) {
  .content { padding: var(--space-4); }
  .card { padding: var(--space-4); }
  .data-table { min-width: 0; }
  .auth-card { padding: var(--space-5); }
  .inline-form { flex-direction: column; align-items: stretch; }
  .quick-actions { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .topbar-actions .notify-pill { display: none; }
  .topbar-actions .icon-btn { display: none; }
  .user-menu-btn span { display: none; }
  .table-wrap { overflow: visible; border: 0; }
  .data-table thead { display: none; }
  .data-table tbody { display: grid; gap: var(--space-3); }
  .data-table tbody tr {
    display: block;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    box-shadow: var(--shadow-sm);
  }
  .data-table td {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: var(--space-2);
    align-items: start;
    border-bottom: 1px dashed var(--color-border);
    padding: 8px 6px;
    font-size: 13px;
  }
  .data-table td:last-child { border-bottom: 0; }
  .data-table td::before {
    content: attr(data-title);
    color: var(--color-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
  }
  .table-pagination {
    position: sticky;
    bottom: 58px;
    background: var(--color-bg);
    padding: 8px 0;
    z-index: 5;
  }
  .mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 55;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #ffffff;
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -8px 24px rgba(15, 23, 42, 0.1);
  }
  .mobile-nav a {
    text-align: center;
    padding: 10px 6px;
    font-size: 12px;
    color: var(--color-muted);
    font-weight: 600;
  }
  .mobile-nav a.active { color: var(--color-accent); }
  .page-wrap { padding-bottom: 68px; }
}