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

:root {
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --secondary-color: #6b7280;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --background: #f3f4f6;
  --card-bg: #ffffff;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

#nav-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-email {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Main Content */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.section {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  padding: 2rem;
}

.login-card {
  max-width: 400px;
  margin: 4rem auto;
  text-align: center;
}

.login-card h2 {
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* Forms */
.form {
  text-align: left;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

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

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

.btn-secondary {
  background: var(--background);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-success {
  background: var(--success-color);
  color: white;
}

.btn-danger {
  background: var(--error-color);
  color: white;
}

.btn-link {
  background: none;
  color: var(--primary-color);
  padding: 0.5rem;
}

.btn-link:hover {
  text-decoration: underline;
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

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

/* Apps Grid */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--card-bg);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  padding: 1.5rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.app-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.app-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.app-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.app-card .package-name {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: monospace;
}

.app-card .version-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  margin-top: 1rem;
}

.version-badge {
  background: var(--success-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
}

/* App Detail */
.app-detail {
  background: var(--card-bg);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  padding: 2rem;
}

.app-detail-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.app-detail-header .app-icon {
  width: 80px;
  height: 80px;
  font-size: 2.5rem;
}

.app-detail-header h2 {
  margin-bottom: 0.25rem;
}

.builds-list {
  margin-top: 1.5rem;
}

.build-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
}

.build-item:hover {
  background: var(--background);
}

.build-info h4 {
  margin-bottom: 0.25rem;
}

.build-info .build-meta {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.build-actions {
  display: flex;
  gap: 0.5rem;
}

/* Back Button */
.back-btn {
  margin-bottom: 1.5rem;
}

/* Admin Panel */
.admin-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
}

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

.tab-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.admin-content {
  background: var(--card-bg);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

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

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

th, td {
  text-align: left;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:hover {
  background: var(--background);
}

/* Status Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning-color);
}

.badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
}

.toast {
  background: var(--card-bg);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  padding: 1rem 1.5rem;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideIn 0.3s ease;
  min-width: 300px;
}

.toast.success {
  border-left: 4px solid var(--success-color);
}

.toast.error {
  border-left: 4px solid var(--error-color);
}

.toast.info {
  border-left: 4px solid var(--primary-color);
}

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

/* Error Message */
.error-message {
  color: var(--error-color);
  background: rgba(239, 68, 68, 0.1);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
}

.info-text {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

/* Modal */
.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;
}

.modal {
  background: var(--card-bg);
  border-radius: 0.75rem;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: fadeIn 0.2s ease;
}

.modal h3 {
  margin-bottom: 1.5rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1.5rem;
}

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

.text-center {
  text-align: center;
}

.text-sm {
  font-size: 0.875rem;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* Responsive */
@media (max-width: 768px) {
  .header {
    padding: 1rem;
  }

  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  .main-content {
    padding: 1rem;
  }

  .login-card {
    margin: 2rem auto;
    padding: 1.5rem;
  }

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

  .app-detail-header {
    flex-direction: column;
    text-align: center;
  }

  .build-item {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .admin-tabs {
    flex-direction: column;
  }

  table {
    font-size: 0.875rem;
  }

  th, td {
    padding: 0.75rem;
  }
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

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

/* Copy button */
.copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  opacity: 0.6;
}

.copy-btn:hover {
  opacity: 1;
}

/* Release notes */
.release-notes {
  background: var(--background);
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  white-space: pre-wrap;
}