/* DuxTV Management - Professional UI (matching streaming UI style) */

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

:root {
  /* Professional Color Palette - Flat, dark theme (same as streaming UI) */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-card: #1c2128;
  --bg-hover: #30363d;
  --bg-active: #1f6feb;
  
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  
  --accent-primary: #1f6feb;
  --accent-secondary: #388bfd;
  --accent-success: #3fb950;
  --accent-warning: #d29922;
  --accent-danger: #f85149;
  
  --border-color: #30363d;
  --border-light: #21262d;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  
  /* No border radius - flat squared UI */
  --radius: 0;
  
  /* Transitions */
  --transition-fast: 100ms ease;
  --transition-normal: 200ms ease;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  font-size: 14px;
}

/* Screen Management */
.screen {
  display: none;
  height: 100vh;
  overflow: hidden;
}

.screen.active {
  display: flex;
  flex-direction: column;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius);
  color: white;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-primary:hover {
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

.btn-primary:active {
  background: var(--accent-primary);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid var(--accent-danger);
  border-radius: var(--radius);
  color: var(--accent-danger);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-danger:hover {
  background: rgba(248, 81, 73, 0.15);
  border-color: var(--accent-danger);
}

/* Spinner */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==================== LOGIN SCREEN ==================== */
#login-screen {
  justify-content: center;
  align-items: center;
  background: var(--bg-primary);
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.login-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.logo-icon {
  font-size: 48px;
  color: var(--accent-primary);
  display: block;
  margin-bottom: var(--space-md);
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
}

.login-logo p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: var(--space-sm);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-primary);
}

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

.form-hint {
  display: block;
  margin-top: var(--space-xs);
  font-size: 11px;
  color: var(--text-muted);
}

.error-message {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: rgba(248, 81, 73, 0.1);
  border: 1px solid var(--accent-danger);
  border-radius: var(--radius);
  color: var(--accent-danger);
  font-size: 13px;
  text-align: center;
}

/* ==================== APP HEADER ==================== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  height: 56px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon-small {
  font-size: 20px;
  color: var(--accent-primary);
}

.header-brand h1 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.header-brand .badge {
  margin-left: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--accent-primary);
  font-size: 10px;
  font-weight: 600;
  color: white;
  text-transform: uppercase;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.session-info {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-size: 13px;
  color: var(--text-secondary);
}

.session-info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.session-info-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.session-info-value {
  font-weight: 500;
  color: var(--text-primary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl);
  background: var(--bg-primary);
}

/* ==================== SECTIONS ==================== */
.section {
  margin-bottom: var(--space-xl);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 18px;
  font-weight: 600;
}

.section-header h2 i {
  color: var(--accent-primary);
}

/* ==================== CARDS ==================== */
.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.info-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: var(--space-lg);
}

.info-card-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-sm);
}

.info-card-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.info-card-value.monospace {
  font-family: monospace;
  font-size: 13px;
  word-break: break-all;
}

/* ==================== CREATE USER FORM ==================== */
.create-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  margin-bottom: var(--space-lg);
}

.create-form .form-group {
  margin-bottom: 0;
}

.create-form .form-actions {
  display: flex;
  align-items: flex-end;
}

/* ==================== USERS TABLE ==================== */
.users-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.users-table th,
.users-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.users-table th {
  background: var(--bg-tertiary);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.users-table td {
  font-size: 14px;
}

.users-table tbody tr:hover {
  background: var(--bg-hover);
}

.users-table tbody tr:last-child td {
  border-bottom: none;
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-badge.active {
  background: rgba(63, 185, 80, 0.15);
  color: var(--accent-success);
}

.status-badge.inactive {
  background: rgba(248, 81, 73, 0.15);
  color: var(--accent-danger);
}

.status-badge.expired {
  background: rgba(210, 153, 34, 0.15);
  color: var(--accent-warning);
}

.status-badge.admin {
  background: rgba(31, 111, 235, 0.15);
  color: var(--accent-primary);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: var(--space-sm);
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.action-btn:hover {
  background: var(--bg-hover);
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.action-btn.delete:hover {
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  text-align: center;
  min-height: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.empty-icon {
  font-size: 48px;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  opacity: 0.5;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* ==================== MODAL ==================== */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: var(--space-xl);
  margin: var(--space-lg);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--bg-hover);
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.form-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.form-actions .btn-primary,
.form-actions .btn-secondary {
  flex: 1;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 14px;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-primary);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .app-header {
    flex-wrap: wrap;
    gap: var(--space-md);
    padding: var(--space-md);
    height: auto;
  }

  .session-info {
    display: none;
  }

  .info-cards {
    grid-template-columns: 1fr;
  }

  .create-form {
    grid-template-columns: 1fr;
  }

  .users-table {
    font-size: 12px;
  }

  .users-table th,
  .users-table td {
    padding: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .login-container {
    margin: var(--space-md);
    padding: var(--space-lg);
  }

  .logo-icon {
    font-size: 36px;
  }

  .login-logo h1 {
    font-size: 20px;
  }

  .main-content {
    padding: var(--space-lg);
  }
}