:root {
  --primary: #667eea;
  --primary-dark: #5a6fd6;
  --sidebar-bg: #1a1a2e;
  --sidebar-hover: #16213e;
  --sidebar-active: #0f3460;
  --bg: #f5f6fa;
  --card-bg: #ffffff;
  --text: #2d3436;
  --text-light: #636e72;
  --text-muted: #b2bec3;
  --border: #dfe6e9;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --radius: 8px;
  --green: #00b894;
  --orange: #fdcb6e;
  --red: #d63031;
  --blue: #0984e3;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

#app {
  display: flex;
  min-height: 100vh;
}

#sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform 0.3s;
  z-index: 100;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-header h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
}

.sidebar-header h2::before {
  content: '🌹 ';
}

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

.menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
  border-left: 3px solid transparent;
}

.menu-item:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.menu-item.active {
  background: var(--sidebar-active);
  color: #fff;
  border-left-color: var(--primary);
}

.menu-icon {
  width: 20px;
  text-align: center;
}

#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

#topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}

#sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

#sidebar-toggle:hover {
  background: var(--bg);
}

#topbar-title {
  font-size: 16px;
  font-weight: 600;
  flex: 1;
}

#current-time {
  font-size: 13px;
  color: var(--text-light);
  font-variant-numeric: tabular-nums;
}

#main-content {
  flex: 1;
  padding: 24px;
}

/* Page header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.page-header h2 {
  font-size: 20px;
  font-weight: 600;
}

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

.card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}

.stat-card .stat-value {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

.stat-card.active .stat-value { color: var(--green); }
.stat-card.frozen .stat-value { color: var(--orange); }
.stat-card.expired .stat-value { color: var(--red); }
.stat-card.total .stat-value { color: var(--primary); }

/* Tables */
.table-container {
  overflow-x: auto;
}

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

thead th {
  background: var(--bg);
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-light);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

tbody tr:hover {
  background: #f8f9fa;
}

tbody tr:nth-child(even) {
  background: #fafbfc;
}

tbody tr:nth-child(even):hover {
  background: #f0f1f3;
}

/* Badges / Tags */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge.active {
  background: #e0f7f1;
  color: var(--green);
}

.badge.frozen {
  background: #fff4e0;
  color: #e17055;
}

.badge.expired {
  background: #ffe0e0;
  color: var(--red);
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-light);
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: var(--card-bg);
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}

select.form-control {
  appearance: auto;
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.form-row .form-group {
  flex: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

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

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

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

.btn-success {
  background: var(--green);
  color: #fff;
}

.btn-success:hover {
  background: #00a381;
}

.btn-danger {
  background: var(--red);
  color: #fff;
}

.btn-danger:hover {
  background: #c0392b;
}

.btn-warning {
  background: var(--orange);
  color: #fff;
}

.btn-warning:hover {
  background: #f39c12;
}

.btn-accent {
  background: #8B5CF6;
  color: #fff;
}
.btn-accent:hover {
  background: #7C3AED;
}
.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
}

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

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

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

/* Toolbar */
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.toolbar .form-control {
  width: auto;
  min-width: 200px;
}

.toolbar .spacer {
  flex: 1;
}

/* Modal */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s;
}

#modal-overlay.hidden {
  display: none;
}

#modal-content {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  padding: 24px;
  min-width: 400px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  animation: slideUp 0.25s;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

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

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}

.modal-close:hover {
  color: var(--text);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* Template cards grid */
.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.template-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.template-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}

.template-preview {
  height: 140px;
  background: linear-gradient(135deg, var(--primary), #a29bfe);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 40px;
}

.template-body {
  padding: 16px;
}

.template-body h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.template-body p {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 12px;
}

/* Detail page */
.detail-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.detail-header .back-btn {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-light);
  padding: 4px 8px;
  border-radius: 4px;
}

.detail-header .back-btn:hover {
  background: var(--bg);
}

.detail-header h2 {
  font-size: 20px;
  font-weight: 600;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.info-item label {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 2px;
}

.info-item span {
  font-size: 14px;
}

/* Loading spinner */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.loading::after {
  content: '';
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.empty-state p {
  font-size: 14px;
  margin-top: 8px;
}

/* Token display */
.token-display {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  padding: 10px 14px;
  border-radius: 6px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  word-break: break-all;
}

.token-display .token-masked {
  color: var(--text-light);
}

/* Quick actions */
.quick-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Responsive */
@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-100%);
  }

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

  #sidebar-toggle {
    display: block;
  }

  #main-content {
    padding: 16px;
  }

  .stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .template-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .toolbar .form-control {
    width: 100%;
    min-width: auto;
  }

  .page-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  #modal-content {
    min-width: auto;
    width: 95vw;
  }
}