/* ============================================
   Files Transfer — Admin Layout
   ============================================ */

:root {
  --acteon-primary: #F57C00;
  --acteon-primary-hover: #E65100;
  --acteon-primary-light: rgba(245, 124, 0, 0.08);
  --acteon-dark: #2E2E2E;
  --acteon-dark-lighter: #3A3A3A;
  --acteon-dark-hover: #454545;
  --acteon-text: #333333;
  --acteon-text-secondary: #666666;
  --acteon-muted: #888888;
  --acteon-bg: #F5F5F5;
  --acteon-bg-card: #FFFFFF;
  --acteon-border: #E0E0E0;
  --acteon-border-light: #EEEEEE;
  --acteon-radius-card: 8px;
  --acteon-font: Arial, Helvetica, sans-serif;
  --acteon-shadow: 0 2px 8px rgba(0,0,0,0.08);
  --acteon-shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
  --sidebar-width: 260px;
  --topbar-height: 56px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--acteon-font);
  color: var(--acteon-text);
  background: var(--acteon-bg);
  min-height: 100vh;
}

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

/* --- Layout --- */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--acteon-dark);
  color: #ccc;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--acteon-dark-lighter);
}

.sidebar-logo svg { width: 140px; height: auto; }

.sidebar-logo .sidebar-app-name {
  display: block;
  font-size: 11px;
  color: var(--acteon-muted);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

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

.sidebar-section {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #666;
  padding: 16px 20px 6px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  color: #bbb;
  font-size: 14px;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: var(--acteon-dark-hover);
  color: #fff;
}

.sidebar-nav a.active {
  background: var(--acteon-dark-hover);
  color: var(--acteon-primary);
  border-left-color: var(--acteon-primary);
}

.sidebar-nav .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 16px;
  flex-shrink: 0;
}

.sidebar-nav .nav-badge {
  margin-left: auto;
  background: var(--acteon-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--acteon-dark-lighter);
  font-size: 11px;
  color: #666;
}

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

/* --- Topbar --- */
.topbar {
  height: var(--topbar-height);
  background: var(--acteon-bg-card);
  border-bottom: 1px solid var(--acteon-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--acteon-text);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--acteon-text-secondary);
}

.topbar-user .user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--acteon-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.topbar-user .user-role {
  font-size: 11px;
  color: var(--acteon-muted);
}

.btn-logout {
  font-size: 13px;
  color: var(--acteon-muted);
  background: none;
  border: 1px solid var(--acteon-border);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--acteon-font);
  transition: border-color 0.2s, color 0.2s;
}
.btn-logout:hover {
  border-color: var(--acteon-primary);
  color: var(--acteon-primary);
}

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

/* --- KPI Cards --- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.kpi-card {
  background: var(--acteon-bg-card);
  border-radius: var(--acteon-radius-card);
  padding: 24px;
  box-shadow: var(--acteon-shadow);
  border: 2px solid var(--acteon-border);
}

.kpi-card.primary { border-color: var(--acteon-primary); }
.kpi-card.green   { border-color: #2E7D32; }
.kpi-card.orange  { border-color: #E65100; }
.kpi-card.purple  { border-color: #7B1FA2; }

.kpi-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--acteon-muted);
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--acteon-text);
  line-height: 1;
}

.kpi-sub {
  font-size: 12px;
  color: var(--acteon-muted);
  margin-top: 6px;
}

/* --- Section card --- */
.section-card {
  background: var(--acteon-bg-card);
  border-radius: var(--acteon-radius-card);
  box-shadow: var(--acteon-shadow);
  margin-bottom: 20px;
}

.section-card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--acteon-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-card-header h2 {
  font-size: 16px;
  font-weight: 700;
}

.section-card-body {
  padding: 24px;
}

/* --- Table --- */
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--acteon-muted);
  padding: 10px 12px;
  border-bottom: 2px solid var(--acteon-border-light);
}

.admin-table td {
  padding: 12px;
  border-bottom: 1px solid var(--acteon-border-light);
  vertical-align: middle;
}

.admin-table tr:hover td {
  background: var(--acteon-primary-light);
}

/* --- Badges --- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-blue   { background: #E3F2FD; color: #1565C0; }
.badge-green  { background: #E8F5E9; color: #2E7D32; }
.badge-orange { background: #FFF3E0; color: #E65100; }
.badge-red    { background: #FFEBEE; color: #D32F2F; }
.badge-gray   { background: #ECEFF1; color: #455A64; }

/* --- Empty state --- */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--acteon-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 14px;
  line-height: 1.5;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .content { padding: 16px; }
  .topbar { padding: 0 16px; }
}