/* ===== Admin Panel Styles ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --c-bg: #0f172a;
  --c-bg-alt: #1e293b;
  --c-bg-card: #334155;
  --c-bg-input: #1e293b;
  --c-primary: #3b82f6;
  --c-primary-dark: #2563eb;
  --c-success: #22c55e;
  --c-danger: #ef4444;
  --c-text: #f1f5f9;
  --c-text-dim: #94a3b8;
  --c-text-muted: #64748b;
  --c-border: #334155;
  --radius: 8px;
  --font: 'Inter', 'Noto Sans SC', sans-serif;
}

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  min-height: 100vh;
}

/* ===== Login Screen ===== */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 40px 32px;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-logo {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--c-primary);
}

.login-card h1 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--c-text-dim);
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-card input {
  padding: 12px 16px;
  background: var(--c-bg-input);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text);
  font-size: 15px;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s;
}

.login-card input:focus {
  border-color: var(--c-primary);
}

.btn-primary {
  padding: 12px 24px;
  background: var(--c-primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

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

.login-hint {
  font-size: 12px;
  color: var(--c-text-muted);
  margin-top: 4px;
}

.login-error {
  color: var(--c-danger);
  font-size: 13px;
  min-height: 18px;
}

.back-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 13px;
  color: var(--c-text-dim);
  text-decoration: none;
}

.back-link:hover {
  color: var(--c-primary);
}

/* ===== Admin Header ===== */
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 60px;
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-logo {
  font-size: 18px;
  font-weight: 700;
}

.admin-header-right {
  display: flex;
  gap: 10px;
}

.btn-save {
  padding: 8px 16px;
  background: var(--c-success);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-save:hover {
  opacity: 0.9;
}

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

.btn-logout {
  padding: 8px 16px;
  background: transparent;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
  transition: 0.2s;
}

.btn-logout:hover {
  border-color: var(--c-danger);
  color: var(--c-danger);
}

/* ===== Admin Nav ===== */
.admin-nav {
  display: flex;
  gap: 4px;
  padding: 12px 24px;
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-border);
  overflow-x: auto;
  scrollbar-width: none;
}

.admin-nav::-webkit-scrollbar { display: none; }

.admin-nav-btn {
  padding: 8px 16px;
  background: transparent;
  color: var(--c-text-dim);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: 0.2s;
}

.admin-nav-btn:hover {
  background: var(--c-bg-card);
  color: var(--c-text);
}

.admin-nav-btn.active {
  background: var(--c-primary);
  color: white;
}

/* ===== Admin Content ===== */
.admin-content {
  padding: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.admin-section {
  display: none;
}

.admin-section.active {
  display: block;
}

.admin-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.admin-section > p {
  font-size: 14px;
  color: var(--c-text-dim);
  margin-bottom: 24px;
}

/* ===== Form Elements ===== */
.field-group {
  margin-bottom: 24px;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 20px;
}

.field-group h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.field-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text-dim);
}

.field-row input,
.field-row textarea,
.field-row select {
  padding: 10px 12px;
  background: var(--c-bg-input);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

.field-row input:focus,
.field-row textarea:focus,
.field-row select:focus {
  border-color: var(--c-primary);
}

.field-row textarea {
  resize: vertical;
  min-height: 60px;
}

/* Multi-language input */
.ml-input {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ml-field {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.ml-lang-tag {
  flex-shrink: 0;
  width: 40px;
  padding: 10px 0;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--c-text-dim);
  background: var(--c-bg-card);
  border-radius: var(--radius);
}

.ml-field input,
.ml-field textarea {
  flex: 1;
}

/* Stats editor */
.stats-editor {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stat-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--c-bg-input);
  padding: 12px;
  border-radius: var(--radius);
}

.stat-item .stat-value-input {
  width: 120px;
  flex-shrink: 0;
}

.stat-item .stat-labels {
  flex: 1;
}

/* Product editor */
.product-editor-item {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.product-editor-item.collapsed .product-editor-body {
  display: none;
}

.product-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.product-editor-header h4 {
  font-size: 15px;
  font-weight: 600;
}

.product-editor-body {
  margin-top: 16px;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  font-size: 16px;
  color: var(--c-text-dim);
  transition: color 0.2s;
}

.btn-icon:hover {
  color: var(--c-text);
}

.btn-icon.danger:hover {
  color: var(--c-danger);
}

.btn-add {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 2px dashed var(--c-border);
  color: var(--c-text-dim);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: 0.2s;
}

.btn-add:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* Grid layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

@media (max-width: 640px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .stat-item {
    flex-direction: column;
  }
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--c-success);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: transform 0.3s ease;
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  background: var(--c-danger);
}

/* Checkbox */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--c-primary);
}

.checkbox-row label {
  font-size: 14px;
  color: var(--c-text);
  cursor: pointer;
}

/* ===== Messages Module ===== */
.msg-badge {
  display: inline-block;
  background: var(--c-primary);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 12px;
  margin-left: 8px;
  vertical-align: middle;
}

.msg-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg-card {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s;
}

.msg-card.msg-unread {
  border-left: 3px solid var(--c-primary);
}

.msg-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 12px;
}

.msg-sender {
  display: flex;
  gap: 12px;
  align-items: center;
}

.msg-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--c-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.msg-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
}

.msg-email {
  font-size: 13px;
  color: var(--c-primary);
  text-decoration: none;
}

.msg-email:hover {
  text-decoration: underline;
}

.msg-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}

.msg-date {
  font-size: 12px;
  color: var(--c-text-muted);
  white-space: nowrap;
}

.msg-status {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.msg-status.unread {
  background: rgba(59, 130, 246, 0.15);
  color: var(--c-primary);
}

.msg-status.read {
  background: rgba(100, 116, 139, 0.15);
  color: var(--c-text-muted);
}

.msg-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-dim);
  background: var(--c-bg-input);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 14px;
  word-wrap: break-word;
  white-space: pre-wrap;
}

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

.btn-msg {
  padding: 7px 14px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: 0.2s;
  background: transparent;
  color: var(--c-text-dim);
}

.btn-msg:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.btn-mark-read {
  color: var(--c-success);
  border-color: rgba(34, 197, 94, 0.3);
}

.btn-mark-read:hover {
  background: rgba(34, 197, 94, 0.1);
  border-color: var(--c-success);
  color: var(--c-success);
}

.btn-delete-msg:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--c-danger);
  color: var(--c-danger);
}

.msg-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--c-text-muted);
}

.msg-empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.msg-empty p {
  font-size: 14px;
}

@media (max-width: 640px) {
  .msg-card-header {
    flex-direction: column;
  }

  .msg-meta {
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }
}

/* ===== Image Upload UI ===== */
.upload-area {
  border: 2px dashed var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: 0.2s;
  background: var(--c-bg-input);
}

.upload-area:hover {
  border-color: var(--c-primary);
  background: rgba(59, 130, 246, 0.05);
}

.upload-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--c-text-dim);
  font-size: 14px;
}

/* Logo preview */
.logo-preview {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding: 12px;
  background: var(--c-bg-input);
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

.logo-preview img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  border-radius: var(--radius);
  background: white;
  padding: 4px;
}

.logo-preview.empty {
  justify-content: center;
  color: var(--c-text-muted);
  font-size: 13px;
  padding: 20px;
}

/* Product image upload */
.product-images-section {
  background: var(--c-bg-input);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
  border: 1px solid var(--c-border);
}

.img-upload-block {
  margin-bottom: 8px;
}

.img-preview-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.img-thumb {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: 0.2s;
}

.img-thumb:hover {
  border-color: var(--c-primary);
}

/* Detail images grid */
.detail-img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 8px;
}

.detail-img-item {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-border);
}

.detail-img-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  transition: 0.2s;
}

.detail-img-item img:hover {
  opacity: 0.8;
}

.detail-img-remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  padding: 0;
  color: white;
}

.upload-area-small {
  width: 100%;
  aspect-ratio: 1;
  border: 2px dashed var(--c-border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  transition: 0.2s;
  color: var(--c-text-dim);
  background: var(--c-bg);
}

.upload-area-small:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* QR Code upload */
.qr-upload-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  background: var(--c-bg-input);
}

.qr-upload-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.qr-upload-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-primary);
}

.btn-remove-qr-inline {
  background: transparent;
  border: 1px solid var(--c-border);
  color: var(--c-text-dim);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.2s;
  font-family: var(--font);
  line-height: 1;
}

.btn-remove-qr-inline:hover {
  background: var(--c-danger);
  border-color: var(--c-danger);
  color: white;
}

.add-qr-btn {
  width: 100%;
  margin-top: 8px;
  border: 2px dashed var(--c-border);
  background: transparent;
  color: var(--c-text-dim);
  padding: 12px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font);
  transition: 0.2s;
}

.add-qr-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.qr-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: var(--c-bg-input);
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

.qr-preview img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  border-radius: var(--radius);
  background: white;
  padding: 6px;
}

.btn-remove-qr {
  background: var(--c-danger);
  color: white;
  border: none;
  padding: 6px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font);
  transition: 0.2s;
}

.btn-remove-qr:hover {
  opacity: 0.85;
}

/* ===== Category Manager ===== */
.category-manager {
  background: var(--c-bg-input);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.cat-edit-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
  padding: 10px;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.cat-edit-row .ml-input {
  flex: 1;
}

.cat-id-input {
  padding: 8px 10px;
  background: var(--c-bg-input);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text);
  font-family: var(--font);
}

.btn-add-small {
  width: 100%;
  margin-top: 8px;
  border: 2px dashed var(--c-border);
  background: transparent;
  color: var(--c-text-dim);
  padding: 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font);
  transition: 0.2s;
}

.btn-add-small:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* ===== Application Detail Editor ===== */
.app-detail-editor {
  margin-top: 16px;
  padding: 16px;
  background: var(--c-bg-input);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.app-detail-editor h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 14px;
}

.app-media-manager {
  margin-top: 16px;
}

.app-media-manager > label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 10px;
}

.app-media-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 12px;
}

.app-media-empty {
  padding: 20px;
  text-align: center;
  color: var(--c-text-muted);
  font-size: 13px;
  background: var(--c-bg);
  border: 1px dashed var(--c-border);
  border-radius: var(--radius);
}

.app-media-edit {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.app-media-preview {
  width: 100px;
  height: 75px;
  flex-shrink: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-border);
  background: #000;
}

.app-media-preview img,
.app-media-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-media-fields {
  flex: 1;
  min-width: 0;
}

.app-media-fields .field-row {
  margin-bottom: 10px;
}

.app-media-fields .field-row:last-child {
  margin-bottom: 0;
}

.app-media-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.app-media-actions .upload-area-small {
  flex: 1;
  min-width: 120px;
  aspect-ratio: auto;
  padding: 12px;
}

.app-media-actions .btn-add-small {
  flex: 1;
  margin-top: 0;
  min-width: 120px;
}

@media (max-width: 640px) {
  .app-media-edit {
    flex-direction: column;
  }

  .app-media-preview {
    width: 100%;
    height: 160px;
  }
}