/* ===========================
   Admin Panel Styles
   =========================== */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #f5f7fa;
  color: #2d3748;
  line-height: 1.6;
}

/* ===========================
   Login Screen
   =========================== */

.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
  background: white;
  padding: 3rem;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.login-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  margin-bottom: 1.5rem;
  color: white;
}

.login-icon svg {
  width: 40px;
  height: 40px;
}

.login-box h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  color: #1a202c;
}

.login-box p {
  color: #718096;
  margin-bottom: 2rem;
}

#login-form input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  margin-bottom: 1rem;
}

#login-form input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#login-form button {
  width: 100%;
  padding: 0.875rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#login-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

#login-form button:active {
  transform: translateY(0);
}

.error-message {
  color: #e53e3e;
  font-size: 0.875rem;
  margin-top: 1rem;
  display: none;
}

.error-message.show {
  display: block;
}

/* ===========================
   Admin Interface
   =========================== */

.admin-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.admin-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1.5rem 2rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.admin-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.header-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.header-btn.logout {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.3);
}

.header-btn.logout:hover {
  background: rgba(239, 68, 68, 0.3);
}

.header-btn svg {
  width: 18px;
  height: 18px;
}

/* Tabs */
.tabs-container {
  background: white;
  border-bottom: 2px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.tabs {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
  padding: 1rem 2rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.tabs::-webkit-scrollbar {
  height: 4px;
}

.tabs::-webkit-scrollbar-thumb {
  background: #cbd5e0;
  border-radius: 4px;
}

.tab {
  padding: 0.625rem 1.5rem;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #4a5568;
  transition: all 0.3s ease;
  white-space: nowrap;
  position: relative;
}

.tab:hover {
  background: #f7fafc;
  color: #2d3748;
}

.tab.active {
  background: #667eea;
  color: white;
}

.tab .delete-gallery {
  display: none;
  margin-left: 0.5rem;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.tab:hover .delete-gallery {
  display: inline;
}

.tab .delete-gallery:hover {
  opacity: 1;
}

.add-gallery-btn {
  padding: 0.625rem 1rem;
  background: #48bb78;
  border: none;
  border-radius: 8px;
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: auto;
}

.add-gallery-btn:hover {
  background: #38a169;
  transform: translateY(-2px);
}

.add-gallery-btn svg {
  width: 20px;
  height: 20px;
}

/* Main Content */
.admin-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
  width: 100%;
}

/* Add App Section */
.add-app-section {
  margin-bottom: 2rem;
}

.add-app-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.add-app-btn:hover {
  background: #5568d3;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.add-app-btn svg {
  width: 20px;
  height: 20px;
}

/* App Form */
.app-form {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  margin-top: 1rem;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.app-form h3 {
  margin-bottom: 1.5rem;
  color: #1a202c;
  font-size: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: #4a5568;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  padding: 0.75rem;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 0.9375rem;
  transition: all 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: #718096;
}

.form-group small a {
  color: #667eea;
  text-decoration: none;
}

.form-group small a:hover {
  text-decoration: underline;
}

.color-input-group {
  display: flex;
  gap: 0.5rem;
}

.color-input-group input[type="color"] {
  width: 60px;
  height: 44px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  padding: 4px;
}

.color-input-group input[type="text"] {
  flex: 1;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn-primary,
.btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: #667eea;
  color: white;
  flex: 1;
}

.btn-primary:hover {
  background: #5568d3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
  background: #e2e8f0;
  color: #4a5568;
}

.btn-secondary:hover {
  background: #cbd5e0;
}

.btn-primary svg,
.btn-secondary svg {
  width: 18px;
  height: 18px;
}

/* Apps Grid */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* App Card */
.app-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  position: relative;
  cursor: move;
}

.app-card:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  transform: translateY(-4px);
}

.app-card.dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.app-card.disabled {
  opacity: 0.5;
}

.app-card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 1rem;
}

.drag-handle {
  cursor: grab;
  color: #cbd5e0;
  display: flex;
  align-items: center;
}

.drag-handle:active {
  cursor: grabbing;
}

.drag-handle svg {
  width: 20px;
  height: 20px;
}

.app-card-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.toggle-switch {
  position: relative;
  width: 48px;
  height: 24px;
  background: #cbd5e0;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.toggle-switch.active {
  background: #48bb78;
}

.toggle-switch .slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: transform 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.toggle-switch.active .slider {
  transform: translateX(24px);
}

.icon-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.375rem;
  border-radius: 6px;
  color: #718096;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  background: #f7fafc;
  color: #2d3748;
}

.icon-btn.delete:hover {
  background: #fed7d7;
  color: #c53030;
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.app-icon-display {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  margin-bottom: 1rem;
  color: white;
}

.app-icon-display svg {
  width: 28px;
  height: 28px;
}

.app-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: #1a202c;
}

.app-card p {
  color: #718096;
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 0.75rem;
  min-height: 42px;
}

.app-url {
  color: #718096;
  font-size: 0.8125rem;
  word-break: break-all;
  display: block;
  margin-bottom: 0.75rem;
}

.app-launch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  width: 100%;
  margin-top: 0.5rem;
}

.app-launch-btn:hover {
  background: #5568d3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: #a0aec0;
}

.empty-state svg {
  width: 80px;
  height: 80px;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: #718096;
}

.empty-state p {
  font-size: 1rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

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

.modal-content {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-header h3 {
  font-size: 1.25rem;
  color: #1a202c;
}

.modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  color: #718096;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: #f7fafc;
  color: #2d3748;
}

.modal-close svg {
  width: 24px;
  height: 24px;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    align-items: stretch;
  }
  
  .header-actions {
    justify-content: stretch;
  }
  
  .header-btn {
    flex: 1;
    justify-content: center;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .apps-grid {
    grid-template-columns: 1fr;
  }
  
  .tabs {
    padding: 1rem;
  }
  
  .admin-main {
    padding: 1rem;
  }
}

/* Notification Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: white;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 2000;
  animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast.success {
  border-left: 4px solid #48bb78;
}

.toast.error {
  border-left: 4px solid #f56565;
}

.toast svg {
  width: 20px;
  height: 20px;
}

.toast.success svg {
  color: #48bb78;
}

.toast.error svg {
  color: #f56565;
}