:root {
  --bg-dark: #090d16;
  --bg-card: #131b2e;
  --bg-card-hover: #19243d;
  --bg-input: #1c273e;
  --border-color: #24324f;
  --border-focus: #6366f1;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
}

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

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-brand .brand-logo.lg {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px auto;
  border-radius: var(--radius-md);
}

.login-brand h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 4px;
}

.login-brand p {
  color: var(--text-muted);
  font-size: 14px;
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 15px;
  margin-top: 10px;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 18px;
}

.user-badge {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--bg-input);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Header */
.app-header {
  border-bottom: 1px solid var(--border-color);
  background: rgba(19, 27, 46, 0.7);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand-logo {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.brand-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-accent {
  color: var(--accent-primary);
}

.brand-subtitle {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Main Content Layout */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px 64px 24px;
}

/* Stats Section */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.4);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-blue { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.icon-green { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.icon-purple { background: rgba(168, 85, 247, 0.15); color: #c084fc; }

.stat-value {
  display: block;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Toolbar */
.toolbar {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 280px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-box svg {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.filter-box select {
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  cursor: pointer;
}

/* QR Grid Cards */
.qrcodes-section {
  margin-top: 16px;
}

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

.section-header h2 {
  font-size: 20px;
  font-weight: 700;
}

.badge {
  background: var(--bg-input);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.qrcodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}

.qr-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
  transition: var(--transition);
  position: relative;
}

.qr-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.qr-card-top {
  display: flex;
  gap: 16px;
}

.qr-thumbnail {
  width: 90px;
  height: 90px;
  background: #fff;
  padding: 6px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.qr-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-card-info {
  flex: 1;
  min-width: 0;
}

.qr-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.qr-category {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #a5b4fc;
  font-weight: 700;
  background: rgba(99, 102, 241, 0.15);
  padding: 2px 8px;
  border-radius: 4px;
}

.status-tag {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
}

.status-active { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.status-inactive { background: rgba(239, 68, 68, 0.2); color: #f87171; }

.qr-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.qr-redirect-link {
  font-size: 13px;
  color: var(--accent-primary);
  font-weight: 600;
  display: inline-block;
  margin-bottom: 8px;
  text-decoration: none;
  background: rgba(99, 102, 241, 0.1);
  padding: 3px 8px;
  border-radius: 4px;
}

.qr-target-link {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.qr-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12px;
  color: var(--text-secondary);
}

.qr-scans {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--text-primary);
}

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

/* Buttons */
.btn {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  box-shadow: 0 6px 20px var(--accent-glow);
}

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

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-backdrop.hidden {
  display: none !important;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  animation: modalIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-lg {
  max-width: 800px;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 700;
}

.modal-body {
  padding: 24px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 24px;
}

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}

.form-group {
  margin-bottom: 18px;
}

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

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--accent-primary);
}

.form-hint {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.qr-preview-box {
  background: #ffffff;
  padding: 12px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  min-height: 200px;
}

.qr-preview-box canvas {
  max-width: 180px;
  max-height: 180px;
}

.preview-url-info {
  background: var(--bg-input);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 11px;
}

.preview-url-label {
  display: block;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.preview-url-info code {
  color: #a5b4fc;
  word-break: break-all;
}

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

/* Export Modal Styles */
.export-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 28px;
}

@media (max-width: 640px) {
  .export-body { grid-template-columns: 1fr; }
}

.export-preview-box {
  background: #ffffff;
  padding: 16px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.export-preview-box img {
  width: 100%;
  height: auto;
}

.print-notice {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 11px;
  color: var(--accent-success);
}

.export-detail-group {
  margin-bottom: 18px;
}

.detail-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.detail-value {
  font-size: 16px;
  color: var(--text-primary);
}

.copy-input-group {
  display: flex;
  gap: 8px;
}

.copy-input-group input {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #a5b4fc;
  font-family: monospace;
  font-size: 13px;
}

.target-link {
  color: #38bdf8;
  font-size: 14px;
  text-decoration: none;
}

.download-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.download-section h4 {
  font-size: 14px;
  margin-bottom: 12px;
}

.download-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-download {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  justify-content: center;
}

.btn-svg {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
}

.btn-svg:hover {
  background: linear-gradient(135deg, #059669, #047857);
}

.btn-png {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
}

.btn-png:hover {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 64px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 480px;
  margin: 40px auto;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
}

.hidden {
  display: none !important;
}