:root {
  --bg-light: #f8fafc;
  --bg-light-secondary: #f1f5f9;
  --panel-light: #ffffff;
  --muted-light: #64748b;
  --text-light: #0f172a;
  --accent-1: #6366f1;
  --accent-2: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg-dark-1: #0a0a0a;
  --bg-dark-2: #0f0f0f;
  --panel-dark: #18181b;
  --muted-dark: #a1a1aa;
  --text-dark: #f4f4f5;
  --glass-light: rgba(255, 255, 255, 0.8);
  --glass-dark: rgba(24, 24, 27, 0.8);
  --card-border-light: rgba(0, 0, 0, 0.06);
  --card-border-dark: rgba(255, 255, 255, 0.06);
  --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-light-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-dark: 0 4px 6px -1px rgba(0, 0, 0, 0.4),
    0 2px 4px -2px rgba(0, 0, 0, 0.4);
  --shadow-dark-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5),
    0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --transition: 300ms cubic-bezier(0.2, 0.9, 0.3, 1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(
    180deg,
    var(--bg-light) 0%,
    var(--bg-light-secondary) 100%
  );
  color: var(--text-light);
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-bottom: 40px;
  min-height: 100vh;
}

.app-header {
  backdrop-filter: blur(12px) saturate(180%);
  background: var(--glass-light);
  border-bottom: 1px solid var(--card-border-light);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--accent-gradient);
  color: #fff;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.25);
  transition: transform var(--transition), box-shadow var(--transition);
}

.brand-mark:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.35);
}

.app-title {
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--text-light);
}

.app-sub {
  color: var(--muted-light);
  font-size: 0.875rem;
}

.mode-btn {
  border-radius: 10px;
  font-weight: 600;
  transition: all var(--transition);
  padding: 0.5rem 1rem;
  border-width: 2px;
}

.mode-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.badge {
  border-radius: 10px;
  padding: 0.5rem 1rem;
  font-weight: 600;
  font-size: 0.875rem;
}

.panel-card {
  border-radius: 16px;
  border: 1px solid var(--card-border-light);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 520px;
  background: var(--panel-light);
  box-shadow: var(--shadow-light);
}

.panel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-light-lg);
}

.form-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, #e0e7ff, #ddd6fe);
  color: var(--accent-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-light);
  font-weight: 700;
}

p {
  color: var(--muted-light);
  line-height: 1.6;
}

.form-input {
  background: var(--bg-light);
  border: 1px solid var(--card-border-light);
  padding-top: 1rem;
  padding-bottom: 0.8rem;
  transition: all var(--transition);
  border-radius: 10px;
  color: var(--text-light);
}

.form-input:focus {
  border-color: var(--accent-1);
  outline: none;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  background: var(--panel-light);
}

.form-input.is-valid {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.form-input.is-invalid {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
}

.textarea-lg {
  height: 110px;
  resize: none;
}

.form-floating > textarea:focus ~ label::after,
.form-floating > textarea:not(:placeholder-shown) ~ label::after {
  position: static;
}
.invalid-text {
  color: var(--danger) !important;
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  font-weight: 500;
}

.action-btn {
  border-radius: 10px;
  padding: 0.6rem 1.2rem;
  transition: all var(--transition);
  font-weight: 600;
  border: none;
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background: var(--accent-gradient);
  border: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
}

.btn-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.btn-warning:hover {
  background: linear-gradient(135deg, #d97706, #b45309);
}

.btn-outline-danger {
  border: 2px solid var(--danger);
  color: var(--danger);
}

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

.search-input {
  min-width: 260px;
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--card-border-light);
  background: var(--panel-light);
  transition: all var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-select {
  border-radius: 10px;
  border: 1px solid var(--card-border-light);
  padding: 0.5rem 0.75rem;
  background: var(--panel-light);
  transition: all var(--transition);
}

.form-select:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

#rowData .card {
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--card-border-light);
  background: var(--panel-light);
  box-shadow: var(--shadow-light);
  min-height: 360px;
}

#rowData .card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-light-lg);
  border-color: var(--accent-1);
}

#rowData .card .card-img-top {
  height: 220px;
  object-fit: cover;
  display: block;
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.card-text {
  color: var(--muted-light);
  line-height: 1.6;
  font-size: 0.875rem;
}

.product-badge {
  position: absolute;
  right: 14px;
  top: 14px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  border: none;
}

.product-price {
  font-weight: 800;
  color: var(--accent-2);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 1.25rem;
}

.price-currency {
  font-weight: 600;
  color: var(--muted-light);
  font-size: 0.95rem;
}

.card-actions {
  gap: 0.25rem;
}

.card-actions .btn {
  border-width: 2px;
  transition: all var(--transition);
  padding: 0.5rem 0.75rem;
}

.card-actions .btn:hover {
  transform: scale(1.05);
}

/* Enhanced File Input Styling */
.file-group {
  align-items: stretch;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-light);
  transition: all var(--transition);
  position: relative;
}

.file-group:hover {
  border-color: var(--accent-1);
  background: var(--panel-light);
}

.file-icon {
  background: linear-gradient(135deg, #e0e7ff, #ddd6fe);
  border: none;
  color: var(--accent-2);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.file-input {
  border-radius: 0;
  border: none;
  padding: 0.75rem 0.75rem;
  background: transparent;
  cursor: pointer;
  font-size: 0.875rem;
}

.file-input::file-selector-button {
  background: var(--accent-gradient);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  margin-right: 1rem;
  transition: all var(--transition);
}

.file-input::file-selector-button:hover {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(99, 102, 241, 0.3);
}

.file-input:focus {
  outline: none;
}

.file-group.has-file {
  border-style: solid;
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

/*! Dark Mode */
.dark-mode {
  background: linear-gradient(
    180deg,
    var(--bg-dark-1) 0%,
    var(--bg-dark-2) 100%
  );
  color: var(--text-dark);
}

.dark-mode .app-header {
  background: var(--glass-dark);
  backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--card-border-dark);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.8);
}

.dark-mode .brand-mark {
  background: var(--accent-gradient);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.dark-mode .app-title {
  color: var(--text-dark);
}

.dark-mode .app-sub {
  color: var(--muted-dark);
}

.dark-mode h1,
.dark-mode h2,
.dark-mode h3,
.dark-mode h4,
.dark-mode h5,
.dark-mode h6 {
  color: var(--text-dark);
}

.dark-mode p {
  color: var(--muted-dark);
}

.dark-mode .text-muted {
  color: var(--muted-dark) !important;
}

.dark-mode .panel-card {
  background: var(--panel-dark);
  border: 1px solid var(--card-border-dark);
  box-shadow: var(--shadow-dark);
}

.dark-mode .panel-card:hover {
  box-shadow: var(--shadow-dark-lg);
}

.dark-mode .form-icon {
  background: linear-gradient(135deg, #312e81, #4c1d95);
  color: #a5b4fc;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.dark-mode .form-input {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dark);
}

.form-input::placeholder {
  opacity: 0;
  transition: opacity var(--transition);
}

.form-input:focus::placeholder {
  opacity: 0.5;
}

.dark-mode .form-input::placeholder {
  color: #71717a;
  opacity: 0;
}

.dark-mode .form-input:focus::placeholder {
  opacity: 0.5;
}

.dark-mode .form-input:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: #818cf8;
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

.dark-mode .form-input.is-valid {
  border-color: #34d399;
  background: rgba(16, 185, 129, 0.1);
}

.dark-mode .form-input.is-invalid {
  border-color: #f87171;
  background: rgba(239, 68, 68, 0.1);
}

.dark-mode .textarea-lg {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dark);
}

.dark-mode .search-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border-dark);
  color: var(--text-dark);
}

.dark-mode .search-input::placeholder {
  color: #71717a;
}

.dark-mode .search-input:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: #818cf8;
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

.dark-mode .form-select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border-dark);
  color: var(--text-dark);
}

.dark-mode .form-select option {
  background: var(--panel-dark);
  color: var(--text-dark);
}

.dark-mode .form-select:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: #818cf8;
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

.dark-mode #rowData .card {
  background: var(--panel-dark);
  border: 1px solid var(--card-border-dark);
  box-shadow: var(--shadow-dark);
}

.dark-mode #rowData .card:hover {
  box-shadow: var(--shadow-dark-lg);
  border-color: #818cf8;
}

.dark-mode #rowData .card .card-img-top {
  background: linear-gradient(135deg, #27272a, #18181b);
}

.dark-mode .card-title {
  color: var(--text-dark);
}

.dark-mode .card-text {
  color: var(--muted-dark);
}

.dark-mode .product-badge {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  backdrop-filter: blur(8px);
  color: #18181b;
  border: none;
  box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
  font-weight: 800;
}

.dark-mode .product-price {
  color: #a5b4fc;
}

.dark-mode .price-currency {
  color: var(--muted-dark);
}

.dark-mode .file-group {
  border-color: var(--card-border-dark);
  background: rgba(255, 255, 255, 0.03);
}

.dark-mode .file-group:hover {
  border-color: #818cf8;
  background: rgba(255, 255, 255, 0.05);
}

.dark-mode .file-icon {
  background: linear-gradient(135deg, #312e81, #4c1d95);
  color: #a5b4fc;
}

.dark-mode .file-input {
  background: transparent;
  color: var(--text-dark);
}

.dark-mode .file-input::file-selector-button {
  background: var(--accent-gradient);
  color: white;
}

.dark-mode .file-input::file-selector-button:hover {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
}

.dark-mode .file-group.has-file {
  border-color: #34d399;
  background: rgba(16, 185, 129, 0.1);
}

.form-floating > label {
  color: var(--muted-light);
  transition: all var(--transition);
}

.dark-mode .form-floating > label {
  color: var(--muted-dark);
}

.form-floating > .form-input:focus ~ label,
.form-floating > .form-input:not(:placeholder-shown) ~ label {
  color: var(--accent-1);
}

.dark-mode .form-floating > .form-input:focus ~ label,
.dark-mode .form-floating > .form-input:not(:placeholder-shown) ~ label {
  color: #818cf8;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
  background: var(--muted-light);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-1);
}

.dark-mode ::-webkit-scrollbar-track {
  background: var(--bg-dark-2);
}

.dark-mode ::-webkit-scrollbar-thumb {
  background: var(--muted-dark);
}

.dark-mode ::-webkit-scrollbar-thumb:hover {
  background: #818cf8;
}

#rowData .card .card-img-top[src=""] {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

.dark-mode #rowData .card .card-img-top[src=""] {
  background: linear-gradient(90deg, #27272a 25%, #18181b 50%, #27272a 75%);
  background-size: 200% 100%;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@media (max-width: 991px) {
  .search-input {
    min-width: 150px;
  }
  .form-icon {
    display: none;
  }
  .panel-card {
    min-height: auto;
  }
  #rowData .card {
    min-height: 300px;
  }
  .brand-mark {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }
  .app-title {
    font-size: 1rem;
  }
  .app-sub {
    font-size: 0.75rem;
  }
}

@media (max-width: 576px) {
  .action-btn {
    padding: 0.5rem 0.8rem;
    font-size: 0.875rem;
  }
  .card-body {
    padding: 1.25rem;
  }
  .product-price {
    font-size: 1.125rem;
  }
  .file-input::file-selector-button {
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
  }
}