/* --- CSS VARIABLES & THEMING --- */
:root {
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Color Palette */
  --bg-main: #090a0f;
  --bg-surface: rgba(18, 20, 29, 0.7);
  --bg-surface-solid: #12141d;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.3);
  
  --secondary: #8b5cf6;
  --secondary-hover: #7c3aed;
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.2);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-inverse: #ffffff;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadow & Blur */
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
  --blur-amount: 12px;
}

/* --- BASIC RESET & SCROLLBAR --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.1) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* --- UTILITIES --- */
.hidden {
  display: none !important;
}

/* --- TOAST NOTIFICATIONS --- */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 380px;
  width: calc(100% - 48px);
}

.toast {
  background: rgba(18, 20, 29, 0.85);
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: 8px;
  padding: 16px;
  color: var(--text-main);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  transform: translateX(120%);
  transition: transform var(--transition-normal);
}

.toast.show {
  transform: translateX(0);
}

.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }
.toast-warning { border-left-color: var(--warning); }

.toast-icon {
  flex-shrink: 0;
  margin-top: 2px;
}
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--danger); }
.toast-warning .toast-icon { color: var(--warning); }

.toast-content {
  flex-grow: 1;
}
.toast-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 2px;
}
.toast-desc {
  font-size: 13px;
  color: var(--text-muted);
}
.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}
.toast-close:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

/* --- LOADING SPINNER --- */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(9, 10, 15, 0.7);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
}

/* --- AUTH PAGE --- */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.auth-card {
  background: var(--bg-surface);
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}
.auth-logo i {
  color: var(--primary);
}
.auth-logo span {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-main) 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  text-align: center;
}
.auth-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 24px;
}

/* --- BUTTONS --- */
.btn {
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--primary);
  color: var(--text-inverse);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-color);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-danger {
  background: var(--danger);
  color: var(--text-inverse);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background: #dc2626;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

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

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

/* --- FORM ELEMENTS --- */
.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.form-label .char-counter {
  font-size: 11px;
}
.form-label .char-counter.warning {
  color: var(--warning);
  font-weight: 600;
}
.form-label .char-counter.danger {
  color: var(--danger);
  font-weight: 700;
  animation: pulse 1s infinite alternate;
}

@keyframes pulse {
  from { opacity: 0.6; }
  to { opacity: 1; }
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper i {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.form-input {
  width: 100%;
  padding: 11px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.input-wrapper .form-input {
  padding-left: 44px;
}

.form-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

textarea.form-input {
  resize: vertical;
  min-height: 90px;
}

/* Range input styled */
.range-container {
  display: flex;
  align-items: center;
  gap: 16px;
}
.range-container input[type="range"] {
  flex-grow: 1;
  accent-color: var(--primary);
}
.range-value {
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 6px;
  min-width: 60px;
  text-align: center;
  font-size: 13px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  user-select: none;
}
.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

.form-switch {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.form-link {
  font-size: 13px;
  color: var(--primary);
  text-decoration: none;
  cursor: pointer;
  font-weight: 500;
}
.form-link:hover {
  text-decoration: underline;
}

.auth-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* --- APP LAYOUT --- */
.app-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.app-header {
  background: rgba(18, 20, 29, 0.7);
  backdrop-filter: blur(var(--blur-amount));
  border-bottom: 1px solid var(--border-color);
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-section i {
  color: var(--primary);
}
.logo-section h1 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-main) 40%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.badge-admin {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
}

.user-section {
  display: flex;
  align-items: center;
  gap: 20px;
}
.user-email {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}
.api-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-muted);
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.api-badge:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}
.api-badge-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

/* Main Container */
.main-content {
  flex-grow: 1;
  padding: 32px;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Control Bar: Filters, search and actions */
.controls-card {
  background: var(--bg-surface);
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-lg);
}

.controls-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.search-wrapper {
  flex-grow: 1;
  min-width: 250px;
}

.filter-select {
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 14px;
  outline: none;
  min-width: 140px;
  cursor: pointer;
  transition: var(--transition-fast);
}
.filter-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.filter-select option {
  background: var(--bg-surface-solid);
  color: var(--text-main);
}

/* Discount Grid */
.discount-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  min-height: 300px;
  position: relative;
}

/* No Items State */
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  text-align: center;
  color: var(--text-muted);
}
.empty-state i {
  color: rgba(255, 255, 255, 0.1);
  margin-bottom: 16px;
}
.empty-state h3 {
  color: var(--text-main);
  font-size: 18px;
  margin-bottom: 8px;
}
.empty-state p {
  font-size: 14px;
  max-width: 380px;
}

/* Discount Card */
.discount-card {
  background: var(--bg-surface);
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.discount-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.25);
  box-shadow: 0 12px 30px -5px rgba(0,0,0,0.4), 0 0 20px rgba(99, 102, 241, 0.05);
}

.card-image-section {
  position: relative;
  height: 180px;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}
.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}
.discount-card:hover .card-img {
  transform: scale(1.05);
}
.card-img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.1);
  gap: 8px;
  font-size: 13px;
}

.badge-featured-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(245, 158, 11, 0.9);
  color: #000;
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  backdrop-filter: blur(4px);
}

.btn-star-overlay {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(18, 20, 29, 0.6);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.btn-star-overlay:hover {
  background: rgba(18, 20, 29, 0.9);
  color: var(--warning);
  border-color: var(--warning);
}
.btn-star-overlay.featured {
  color: var(--warning);
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
}

.card-amount-tag {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: var(--success);
  color: var(--text-inverse);
  font-weight: 800;
  font-size: 16px;
  padding: 4px 10px;
  border-radius: 6px;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

/* Card Body */
.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.card-meta-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.card-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}
.card-badge-type {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.2);
  color: var(--secondary);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-main);
  /* Truncate multi-line if needed */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 42px;
}

.card-products {
  font-size: 12px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 36px;
}

.card-desc {
  font-size: 13px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 58px;
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
}

/* Card Footer */
.card-footer {
  border-top: 1px solid var(--border-color);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.1);
}

.card-date {
  font-size: 11px;
  color: var(--text-muted);
}

.card-actions {
  display: flex;
  gap: 8px;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.btn-icon:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}
.btn-icon-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--danger);
}
.btn-icon-primary:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  color: var(--primary);
}

/* Pagination Row */
.pagination-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 24px;
}
.pagination-info {
  font-size: 13px;
  color: var(--text-muted);
}
.pagination-buttons {
  display: flex;
  gap: 8px;
}

/* --- MODAL SYSTEM --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(9, 10, 15, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(30px);
  transition: transform var(--transition-normal);
  overflow: hidden;
}
.modal-backdrop.open .modal-card {
  transform: translateY(0);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-title {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.modal-title i {
  color: var(--primary);
}
.btn-modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 6px;
  transition: var(--transition-fast);
}
.btn-modal-close:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-main);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex-grow: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: rgba(0, 0, 0, 0.15);
}

/* Image input group styles */
.images-list-builder {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(255, 255, 255, 0.01);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  padding: 16px;
  margin-top: 6px;
}
.image-input-item {
  display: flex;
  gap: 12px;
  align-items: center;
}
.image-input-item .form-input {
  flex-grow: 1;
}
.image-url-preview {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.image-url-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.image-url-preview i {
  color: var(--text-muted);
  font-size: 14px;
}
.image-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

/* API CONFIG MODAL */
.api-url-explanation {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* --- RESPONSIVE ADJUSTMENTS --- */
@media (max-width: 768px) {
  .app-header {
    padding: 16px;
  }
  .main-content {
    padding: 16px;
  }
  .controls-row {
    flex-direction: column;
    align-items: stretch;
  }
  .search-wrapper {
    width: 100%;
  }
  .filter-select {
    width: 100%;
  }
  .user-section {
    gap: 12px;
  }
  .user-email {
    display: none;
  }
}