:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-subtle: #eff6ff;
    --accent-color: #0ea5e9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-surface: #0f172a;
    --card-bg: #ffffff;
    --body-bg: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
}

body {
    font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--body-bg);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.2px;
}

/* Header Box */
.header-box {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%);
    color: white;
    padding: 30px 24px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    box-shadow: 0 12px 30px -5px rgba(30, 58, 138, 0.3);
    position: relative;
    overflow: hidden;
}

.header-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    pointer-events: none;
}

.header-box h2 {
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Stat Cards in Header */
.stat-summary-card {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    transition: all 0.2s ease;
}

.stat-summary-card:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-2px);
}

/* Custom Cards */
.card-custom {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
    transition: box-shadow 0.2s ease;
}

.card-custom:hover {
    box-shadow: var(--shadow-md);
}

/* Modern Segmented Navigation Tabs */
.nav-tabs {
    border-bottom: none;
    background: #e2e8f0;
    padding: 6px;
    border-radius: var(--radius-md);
    gap: 6px;
}

.nav-tabs .nav-item {
    flex: 1;
}

.nav-tabs .nav-link {
    width: 100%;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-secondary);
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    text-align: center;
    background: transparent;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.nav-tabs .nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.6);
}

.nav-tabs .nav-link.active {
    color: #1e40af;
    background: #ffffff;
    box-shadow: var(--shadow-sm);
    border-bottom: none;
}

/* Search input with clear button and icon */
.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrapper .search-icon {
    position: absolute;
    right: 14px;
    color: var(--text-secondary);
    font-size: 1.15rem;
    pointer-events: none;
}

.search-input-wrapper input {
    padding-right: 42px;
    padding-left: 38px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-color);
    transition: all 0.2s ease;
    font-weight: 500;
}

.search-input-wrapper input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.search-input-wrapper .clear-btn {
    position: absolute;
    left: 12px;
    cursor: pointer;
    color: #94a3b8;
    background: none;
    border: none;
    padding: 0;
    font-size: 1.1rem;
    display: none;
    transition: color 0.15s ease;
}

.search-input-wrapper .clear-btn:hover {
    color: var(--danger-color);
}

/* Badges */
.badge-vehicle {
    background-color: #dbeafe;
    color: #1e40af;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
    display: inline-block;
    max-width: 100%;
    white-space: normal;
    line-height: 1.4;
}

.vehicle-tags-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    max-width: 220px;
    align-items: center;
}

.badge-vehicle-sm {
    background-color: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
    display: inline-block;
}

.badge-supplier {
    background-color: #f3e8ff;
    color: #6b21a8;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 6px;
}

.badge-code {
    background-color: #f1f5f9;
    color: #334155;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9rem;
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge-code .copy-icon {
    cursor: pointer;
    opacity: 0.45;
    transition: opacity 0.15s ease;
}

.badge-code .copy-icon:hover {
    opacity: 1;
    color: var(--primary-color);
}

.badge-brand {
    background-color: #ffedd5;
    color: #9a3412;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 6px;
}

.badge-cat {
    background-color: #dcfce7;
    color: #166534;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 6px;
}

.price-tag {
    color: #15803d;
    font-weight: 700;
    font-size: 1.05rem;
    font-variant-numeric: tabular-nums;
}

/* Highlight search matches */
.match-highlight {
    background-color: #fef08a;
    color: #854d0e;
    padding: 1px 3px;
    border-radius: 4px;
    font-weight: 600;
}

/* Modern Tables */
.table {
    --bs-table-hover-bg: #f8fafc;
}

.table thead th {
    background-color: #f1f5f9;
    color: #475569;
    font-weight: 700;
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.2px;
    border-bottom: 2px solid #e2e8f0;
    padding: 12px 14px;
    white-space: nowrap;
}

.table tbody td {
    padding: 14px;
    vertical-align: middle;
    border-bottom: 1px solid #f1f5f9;
}

.table-hover tbody tr:hover {
    background-color: #f8fafc !important;
}

/* Upload Dropzone */
.upload-area {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    background-color: #f8fafc;
    cursor: pointer;
    transition: all 0.2s ease;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary-color);
    background-color: var(--primary-subtle);
}

/* Toast Notification for Clipboard Copy */
#copy-toast {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 9999;
    background: #1e293b;
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 30px;
    font-size: 0.9rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    display: none;
    align-items: center;
    gap: 8px;
    animation: fadeInToast 0.25s ease-out;
}

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

/* Searchable Dropdown Component */
.custom-select-wrapper {
    position: relative;
    user-select: none;
    width: 100%;
}

.custom-select-trigger {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    background-color: #fff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 48px;
}

.custom-select-trigger:hover {
    border-color: #94a3b8;
}

.custom-select-wrapper.open .custom-select-trigger {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.custom-select-trigger .selected-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-left: 10px;
}

.custom-select-trigger .chevron-icon {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: transform 0.2s ease;
}

.custom-select-wrapper.open .chevron-icon {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.custom-select-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    left: 0;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1050;
    display: none;
    overflow: hidden;
    animation: fadeInDropdown 0.15s ease-out;
}

@keyframes fadeInDropdown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.custom-select-wrapper.open .custom-select-dropdown {
    display: block;
}

.custom-select-search-box {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    background-color: #f8fafc;
    position: relative;
}

.custom-select-search-box input {
    width: 100%;
    padding: 7px 32px 7px 12px;
    font-size: 0.9rem;
    border: 1px solid #cbd5e1;
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.15s ease;
}

.custom-select-search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.custom-select-search-box .search-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    pointer-events: none;
}

.custom-select-options {
    max-height: 240px;
    overflow-y: auto;
    list-style: none;
    padding: 4px 0;
    margin: 0;
}

.custom-select-option {
    padding: 9px 14px;
    font-size: 0.92rem;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.15s ease;
}

.custom-select-option:hover {
    background-color: var(--primary-subtle);
    color: var(--primary-hover);
}

.custom-select-option.selected {
    background-color: #dbeafe;
    color: #1e40af;
    font-weight: 600;
}

.custom-select-option.selected::after {
    content: "✓";
    font-weight: bold;
    color: #2563eb;
    margin-left: 8px;
}

.custom-select-empty {
    padding: 14px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.88rem;
}