:root {
  --bg-body: #0b0f1c;
  --bg-sidebar: #0e1525;
  --bg-navbar: #111827;
  --bg-card: #131d2e;
  --bg-card-hover: #172236;
  --bg-input: #0e1525;
  --bg-modal: #111827;
  --bg-table-row: #0f1929;
  --bg-table-hover: #172236;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.12);
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.12);
  --info: #06b6d4;
  --info-light: rgba(6, 182, 212, 0.12);
  --purple: #8b5cf6;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #1e2d45;
  --border-light: #162033;
  --sidebar-width: 260px;
  --navbar-height: 64px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-sidebar); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== LOGIN PAGE ===== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.06) 0%, transparent 50%),
              var(--bg-body);
  padding: 20px;
}

.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow);
}

.login-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.login-logo h1 { font-size: 22px; font-weight: 700; color: var(--text-primary); }
.login-logo span { font-size: 12px; color: var(--text-secondary); display: block; }

.login-title { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.login-subtitle { color: var(--text-secondary); font-size: 13px; margin-bottom: 28px; }

/* ===== LAYOUT ===== */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition);
  overflow: hidden;
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: var(--navbar-height);
}

.sidebar-logo-icon {
  width: 38px;
  height: 38px;
  background: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.sidebar-brand { font-size: 15px; font-weight: 700; color: var(--text-primary); line-height: 1.2; }
.sidebar-brand span { font-size: 11px; color: var(--text-secondary); font-weight: 400; display: block; }

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

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 12px 20px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 0;
  transition: all var(--transition);
  position: relative;
  user-select: none;
  font-size: 13.5px;
}

.nav-item:hover { background: rgba(37,99,235,0.08); color: var(--text-primary); }

.nav-item.active {
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-badge { margin-left: auto; background: var(--danger); color: #fff; font-size: 10px; font-weight: 700; padding: 1px 6px; border-radius: 10px; min-width: 18px; text-align: center; }

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

.sidebar-user { display: flex; align-items: center; gap: 10px; }
.sidebar-user-avatar {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  color: #fff; flex-shrink: 0;
  overflow: hidden;
}
.sidebar-user-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name { font-size: 13px; font-weight: 600; truncate: true; }
.sidebar-user-role { font-size: 11px; color: var(--text-muted); text-transform: capitalize; }
.sidebar-logout {
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  padding: 6px; border-radius: 6px; transition: all var(--transition);
  display: flex; align-items: center;
}
.sidebar-logout:hover { background: var(--danger-light); color: var(--danger); }

/* ===== MAIN CONTENT ===== */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== NAVBAR ===== */
.navbar {
  height: var(--navbar-height);
  background: var(--bg-navbar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 90;
}

.navbar-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  font-size: 20px;
}

.navbar-breadcrumb { flex: 1; }
.navbar-page-title { font-size: 17px; font-weight: 600; color: var(--text-primary); }
.navbar-page-sub { font-size: 12px; color: var(--text-secondary); }

.navbar-actions { display: flex; align-items: center; gap: 8px; }

.navbar-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 16px;
  transition: all var(--transition);
  position: relative;
}
.navbar-btn:hover { border-color: var(--accent); color: var(--accent); }
.navbar-btn .badge { position: absolute; top: -4px; right: -4px; background: var(--danger); color: #fff; font-size: 9px; font-weight: 700; padding: 1px 4px; border-radius: 8px; min-width: 16px; text-align: center; }

/* ===== PAGE CONTENT ===== */
.page-content {
  flex: 1;
  padding: 24px;
  overflow-x: hidden;
}

/* ===== PAGE HEADER ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header-left h2 { font-size: 20px; font-weight: 700; }
.page-header-left p { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

/* ===== STAT CARDS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--transition);
  cursor: default;
}

.stat-card:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.blue { background: var(--accent-light); }
.stat-icon.green { background: var(--success-light); }
.stat-icon.amber { background: var(--warning-light); }
.stat-icon.red { background: var(--danger-light); }
.stat-icon.purple { background: rgba(139,92,246,0.12); }
.stat-icon.cyan { background: var(--info-light); }

.stat-info { flex: 1; min-width: 0; }
.stat-value { font-size: 28px; font-weight: 700; line-height: 1; margin-bottom: 4px; }
.stat-label { font-size: 12px; color: var(--text-secondary); font-weight: 500; }
.stat-change { font-size: 11px; color: var(--success); margin-top: 4px; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.chart-container { position: relative; height: 260px; }

/* ===== TOOLBAR ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.toolbar-search {
  position: relative;
  flex: 1;
  min-width: 200px;
  max-width: 320px;
}

.toolbar-search input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: border-color var(--transition);
}

.toolbar-search input:focus { border-color: var(--accent); }
.toolbar-search input::placeholder { color: var(--text-muted); }

.toolbar-search .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

/* ===== FORMS ===== */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-label span.required { color: var(--danger); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
}

.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-control::placeholder { color: var(--text-muted); }
.form-control:disabled { opacity: 0.5; cursor: not-allowed; }

select.form-control { cursor: pointer; }
select.form-control option { background: var(--bg-modal); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-full { grid-column: 1 / -1; }

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
  text-decoration: none;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-success:hover:not(:disabled) { background: #059669; }

.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover:not(:disabled) { background: #dc2626; }

.btn-warning { background: var(--warning); color: #000; border-color: var(--warning); }
.btn-warning:hover:not(:disabled) { background: #d97706; }

.btn-outline { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-outline:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }

.btn-ghost { background: transparent; border-color: transparent; color: var(--text-secondary); padding: 7px 10px; }
.btn-ghost:hover:not(:disabled) { background: var(--bg-card-hover); color: var(--text-primary); }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-icon { padding: 7px; border-radius: var(--radius-sm); }
.btn-full { width: 100%; justify-content: center; }

.btn-loading { position: relative; pointer-events: none; }
.btn-loading::after { content: ''; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }

/* ===== TABLES ===== */
.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }

th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  background: var(--bg-card);
}

td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  font-size: 13.5px;
  vertical-align: middle;
}

tr:hover td { background: var(--bg-table-hover); }
tr:last-child td { border-bottom: none; }

.td-muted { color: var(--text-secondary); font-size: 12px; }

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-accent { background: var(--accent-light); color: var(--accent); }
.badge-muted { background: rgba(100,116,139,0.15); color: var(--text-muted); }
.badge-purple { background: rgba(139,92,246,0.12); color: var(--purple); }

/* ===== STATUS DOT ===== */
.status-dot { display: inline-flex; align-items: center; gap: 6px; }
.status-dot::before { content: ''; width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.status-dot.online::before { background: var(--success); box-shadow: 0 0 0 2px rgba(16,185,129,0.25); animation: pulse 2s infinite; }
.status-dot.offline::before { background: var(--text-muted); }
.status-dot.active::before { background: var(--success); }
.status-dot.inactive::before { background: var(--danger); }

/* ===== AVATAR ===== */
.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff;
  overflow: hidden; flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar.sm { width: 28px; height: 28px; font-size: 11px; }

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}

.pagination-info { font-size: 12px; color: var(--text-secondary); }

.pagination-controls { display: flex; align-items: center; gap: 4px; }

.page-btn {
  width: 32px; height: 32px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 500;
  transition: all var(--transition);
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

.modal-overlay.open { opacity: 1; visibility: visible; }

.modal {
  background: var(--bg-modal);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transform: scale(0.95) translateY(10px);
  transition: transform 0.2s;
}

.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal.wide { max-width: 760px; }
.modal.narrow { max-width: 420px; }

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-title { font-size: 16px; font-weight: 600; flex: 1; }

.modal-close {
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  width: 32px; height: 32px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; transition: all var(--transition);
}
.modal-close:hover { background: var(--danger-light); color: var(--danger); }

.modal-body { padding: 20px 24px; overflow-y: auto; flex: 1; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 360px;
}

.toast {
  background: var(--bg-modal);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: var(--shadow);
  animation: slideInRight 0.3s ease;
  border-left: 4px solid var(--accent);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
.toast.info { border-left-color: var(--info); }

.toast-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.toast-content { flex: 1; min-width: 0; }
.toast-title { font-size: 13.5px; font-weight: 600; }
.toast-msg { font-size: 12.5px; color: var(--text-secondary); margin-top: 2px; }
.toast-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 16px; padding: 0; }

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.empty-state p { font-size: 13px; color: var(--text-secondary); }

/* ===== LOADING ===== */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ===== TIMELINE ===== */
.timeline { position: relative; padding-left: 28px; }
.timeline::before { content: ''; position: absolute; left: 9px; top: 0; bottom: 0; width: 2px; background: var(--border); }

.timeline-item {
  position: relative;
  padding-bottom: 20px;
}

.timeline-dot {
  position: absolute;
  left: -24px;
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-body);
}

.timeline-dot.success { background: var(--success); }
.timeline-dot.warning { background: var(--warning); }
.timeline-dot.danger { background: var(--danger); }

.timeline-time { font-size: 11px; color: var(--text-muted); margin-bottom: 2px; }
.timeline-title { font-size: 13.5px; font-weight: 500; }
.timeline-sub { font-size: 12px; color: var(--text-secondary); }

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-select {
  padding: 7px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  outline: none;
  font-family: inherit;
}

.filter-select:focus { border-color: var(--accent); }
.filter-select option { background: var(--bg-modal); }

/* ===== DETAIL ROW ===== */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.detail-item {}
.detail-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 3px; }
.detail-value { font-size: 14px; font-weight: 500; }

/* ===== ALERT ITEM ===== */
.alert-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition);
}
.alert-item:hover { background: var(--bg-table-hover); }
.alert-item:last-child { border-bottom: none; }

.alert-icon { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.alert-icon.danger { background: var(--danger-light); }
.alert-icon.warning { background: var(--warning-light); }
.alert-icon.info { background: var(--info-light); }

.alert-content { flex: 1; min-width: 0; }
.alert-title { font-size: 13.5px; font-weight: 600; }
.alert-meta { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* ===== CHECKBOX ===== */
input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ===== FILE INPUT ===== */
.file-input-wrap { position: relative; }
.file-input-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  transition: border-color var(--transition);
}
.file-input-label:hover { border-color: var(--accent); color: var(--accent); }
.file-input-label input[type="file"] { display: none; }

/* ===== UTILITIES ===== */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.ml-auto { margin-left: auto; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.font-bold { font-weight: 700; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.w-full { width: 100%; }
.overlay-spinner { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 9998; display: flex; align-items: center; justify-content: center; }

/* ===== ANIMATIONS ===== */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 2px rgba(16,185,129,0.25); } 50% { box-shadow: 0 0 0 5px rgba(16,185,129,0); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --sidebar-width: 260px; }

  .sidebar { transform: translateX(-100%); }
  .sidebar.mobile-open { transform: translateX(0); box-shadow: var(--shadow); }

  .sidebar-overlay {
    display: none;
    position: fixed; inset: 0; background: rgba(0,0,0,0.5);
    z-index: 99;
  }
  .sidebar-overlay.active { display: block; }

  .main-wrapper { margin-left: 0; }
  .navbar-hamburger { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .charts-grid { grid-template-columns: 1fr; }
  .page-content { padding: 16px; }
  .form-grid-3 { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .filter-bar { gap: 8px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-search { max-width: none; }
  .login-box { padding: 32px 24px; }
  .modal { margin: 10px; }
}