/* ============================================
   VANTIO DESIGN SYSTEM - Dashboard Theme (Light)
   Based on skill-design-visual.md
   Version: 1.0.1
   Last updated: 2026-01-28
   ============================================ */

:root {
  /* Background colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #FAFAFA;
  --bg-tertiary: #F5F5F5;

  /* Text colors */
  --text-primary: #000000;
  --text-secondary: #666666;
  --text-tertiary: #999999;

  /* Border colors */
  --border-light: #EEEEEE;
  --border-medium: #E0E0E0;

  /* Primary action (dark buttons) */
  --primary: #000000;
  --primary-hover: #333333;

  /* Status colors */
  --success: #10B981;
  --success-bg: #ECFDF5;
  --warning: #F59E0B;
  --warning-bg: #FFFBEB;
  --error: #EF4444;
  --error-bg: #FEF2F2;
  --info: #3B82F6;
  --info-bg: #EFF6FF;

  /* Admin accent */
  --admin-accent: #E11D48;
  --admin-accent-bg: #FFF1F2;

  /* Developer accent */
  --developer-accent: #3B82F6;
  --developer-accent-bg: #EFF6FF;

  /* Layout */
  --sidebar-width: 240px;
  --header-height: 56px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}

.sidebar-header {
  height: var(--header-height);
  padding: 0 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 28px;
  height: 28px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 600;
  font-size: 16px;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.logo-subtitle.admin {
  color: var(--admin-accent);
  font-weight: 500;
}

.logo-subtitle.developer {
  color: var(--developer-accent);
  font-weight: 500;
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 16px 12px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}

.nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.nav-icon {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
  flex-shrink: 0;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-light);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: var(--radius-md);
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: var(--admin-accent-bg);
  color: var(--admin-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 13px;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-weight: 500;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--admin-accent);
  font-weight: 500;
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.logout-btn:hover {
  background: var(--error-bg);
  border-color: var(--error);
  color: var(--error);
}

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

.main-header {
  height: var(--header-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-size: 16px;
  font-weight: 600;
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.content-area {
  flex: 1;
  padding: 24px;
  background: var(--bg-secondary);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-icon {
  width: 16px;
  height: 16px;
}

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

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

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

.btn-secondary:hover {
  background: var(--bg-secondary);
}

.btn-danger {
  background: var(--error);
  color: var(--bg-primary);
  border-color: var(--error);
}

.btn-danger:hover {
  background: #DC2626;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 15px;
}

/* ========================================
   Cards
   ======================================== */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
}

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

.card-title {
  font-size: 14px;
  font-weight: 600;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.card-body {
  padding: 20px;
}

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

/* ========================================
   Filters Bar
   ======================================== */
.filters-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-input {
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.filter-input:focus {
  outline: none;
  border-color: var(--text-primary);
}

.filter-input.search {
  width: 240px;
  padding-left: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23999'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M21 21l-5.197-5.197m0 0A7.5 7.5 0 105.196 5.196a7.5 7.5 0 0010.607 10.607z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 10px center;
  background-size: 18px;
}

.filter-select {
  height: 36px;
  padding: 0 32px 0 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23666'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 16px;
}

.filter-select:focus {
  outline: none;
  border-color: var(--text-primary);
}

/* ========================================
   Tables
   ======================================== */
.table-container {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

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

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
}

.data-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
}

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

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

/* Table cell variants */
.cell-name {
  font-weight: 500;
}

.cell-email {
  color: var(--text-secondary);
}

.cell-date {
  color: var(--text-tertiary);
  font-size: 13px;
}

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

/* ========================================
   Badges
   ======================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 9999px;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-error {
  background: var(--error-bg);
  color: var(--error);
}

.badge-info {
  background: var(--info-bg);
  color: var(--info);
}

.badge-neutral {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

/* Status-specific badges */
.badge-active {
  background: var(--success-bg);
  color: var(--success);
}

.badge-trial {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-suspended {
  background: var(--error-bg);
  color: var(--error);
}

.badge-pending {
  background: var(--info-bg);
  color: var(--info);
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  text-align: center;
}

.empty-icon {
  width: 80px;
  height: 80px;
  background: var(--bg-tertiary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.empty-icon svg {
  width: 40px;
  height: 40px;
  color: var(--text-tertiary);
}

.empty-icon.error {
  background: var(--error-bg);
}

.empty-icon.error svg {
  color: var(--error);
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.empty-description {
  color: var(--text-secondary);
  margin-bottom: 24px;
  max-width: 400px;
}

/* ========================================
   Loading State
   ======================================== */
.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-top: 1px solid var(--border-light);
}

.pagination-info {
  font-size: 13px;
  color: var(--text-secondary);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

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

.pagination-btn svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--text-primary);
}

.form-input:disabled {
  background: var(--bg-secondary);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

.form-textarea {
  width: 100%;
  min-height: 100px;
  padding: 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-primary);
  color: var(--text-primary);
  resize: vertical;
}

.form-textarea:focus {
  outline: none;
  border-color: var(--text-primary);
}

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

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

/* ========================================
   Modals
   ======================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

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

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

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  color: var(--text-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.modal-close svg {
  width: 20px;
  height: 20px;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* ========================================
   Stats Cards
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 20px;
  transition: box-shadow var(--transition-normal);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon svg {
  width: 20px;
  height: 20px;
}

.stat-icon.blue {
  background: var(--info-bg);
  color: var(--info);
}

.stat-icon.green {
  background: var(--success-bg);
  color: var(--success);
}

.stat-icon.purple {
  background: #F3E8FF;
  color: #9333EA;
}

.stat-icon.amber {
  background: var(--warning-bg);
  color: var(--warning);
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.stat-trend {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 9999px;
}

.stat-trend.positive {
  background: var(--success-bg);
  color: var(--success);
}

.stat-trend.negative {
  background: var(--error-bg);
  color: var(--error);
}

/* ========================================
   Avatars
   ======================================== */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 12px;
}

.avatar-lg {
  width: 48px;
  height: 48px;
  font-size: 16px;
}

.avatar-blue {
  background: var(--info-bg);
  color: var(--info);
}

.avatar-green {
  background: var(--success-bg);
  color: var(--success);
}

.avatar-purple {
  background: #F3E8FF;
  color: #9333EA;
}

.avatar-amber {
  background: var(--warning-bg);
  color: var(--warning);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .main-header {
    padding: 0 16px;
  }

  .content-area {
    padding: 16px;
  }

  .filters-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-group {
    flex-direction: column;
  }

  .filter-input.search {
    width: 100%;
  }
}

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.mobile-menu-btn svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}

.sidebar-overlay.active {
  display: block;
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }

.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-info { color: var(--info); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.hidden { display: none; }
.visible { display: block; }