/* ============================================
   IDS-Excel-Gateway — Design System & Styles
   ============================================ */

/* === CSS Custom Properties === */
:root {
    /* Brand Colors - SHK Professional Blue */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-bg: #eff6ff;
    --primary-border: #bfdbfe;

    /* Semantic Colors */
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --success-border: #bbf7d0;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --warning-border: #fde68a;
    --error: #dc2626;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
    --info: #0891b2;
    --info-bg: #ecfeff;
    --info-border: #a5f3fc;

    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Layout */
    --nav-height: 64px;
    --sidebar-width: 280px;
    --container-max: 1280px;
    --container-wide: 1440px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --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 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Font */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* === Typography === */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--gray-900);
}

h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }
p { color: var(--gray-600); }

.mono-text {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* === Navigation === */
#top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: white;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-left, .nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    color: var(--gray-800);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.logo i {
    color: var(--primary);
    font-size: 1.4rem;
}

.logo strong {
    font-weight: 800;
    color: var(--primary);
}

/* Step Indicator */
.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

#step-indicator {
    display: flex;
    align-items: center;
    gap: 0;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: default;
    position: relative;
}

.step-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gray-200);
    color: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all var(--transition-normal);
}

.step.active .step-circle {
    background: var(--primary);
    color: white;
    box-shadow: 0 0 0 4px var(--primary-bg);
}

.step.completed .step-circle {
    background: var(--success);
    color: white;
}

.step-label {
    font-size: 0.7rem;
    color: var(--gray-400);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-normal);
}

.step.active .step-label {
    color: var(--primary);
    font-weight: 600;
}

.step.completed .step-label {
    color: var(--success);
}

.step-line {
    width: 60px;
    height: 2px;
    background: var(--gray-200);
    margin: 0 8px;
    margin-bottom: 18px;
    transition: background var(--transition-normal);
}

.step-line.active {
    background: var(--primary);
}

.step-line.completed {
    background: var(--success);
}

/* Nav Buttons */
.nav-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.nav-btn:hover {
    background: var(--gray-100);
    color: var(--gray-800);
    border-color: var(--gray-300);
}

.session-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success-border);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* === Main Content === */
#app-main {
    margin-top: var(--nav-height);
    min-height: calc(100vh - var(--nav-height));
    padding: 24px;
}

.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.view-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.view-container-wide {
    max-width: var(--container-wide);
}

/* === Session Banner === */
.session-banner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--success-bg), #dcfce7);
    border: 1px solid var(--success-border);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.banner-icon {
    font-size: 1.8rem;
    color: var(--success);
}

.banner-text strong {
    display: block;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.banner-text span {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.banner-details {
    margin-left: auto;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

/* === Drop Zone === */
.upload-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.drop-zone {
    position: relative;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    background: white;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.drop-zone:hover {
    border-color: var(--primary-light);
    background: var(--primary-bg);
}

.drop-zone.drag-over {
    border-color: var(--primary);
    background: var(--primary-bg);
    transform: scale(1.01);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.drop-icon {
    font-size: 3.5rem;
    color: var(--primary-light);
    margin-bottom: 8px;
}

.drop-zone h2 {
    font-size: 1.4rem;
    color: var(--gray-800);
}

.drop-zone p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

.drop-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 200px;
    margin: 8px 0;
}

.drop-divider::before,
.drop-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-300);
}

.drop-divider span {
    color: var(--gray-400);
    font-size: 0.85rem;
}

.drop-zone-hover {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-lg);
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 600;
}

.drop-zone-hover i {
    font-size: 3rem;
}

/* === File Info === */
.file-info {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.file-info-icon {
    font-size: 2rem;
    color: var(--success);
}

.file-info-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.file-name {
    font-weight: 600;
    color: var(--gray-800);
}

.file-meta {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* === Sheet Selector === */
.sheet-selector {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--info-bg);
    border: 1px solid var(--info-border);
    border-radius: var(--radius-md);
}

.sheet-selector label {
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

/* === Raw Preview === */
.raw-preview {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.preview-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: var(--gray-700);
}

.preview-table-wrapper {
    max-height: 350px;
    overflow: auto;
}

/* === Data Tables === */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table th {
    background: var(--gray-100);
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1;
    white-space: nowrap;
}

.data-table td {
    padding: 8px 14px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.data-table tbody tr:hover {
    background: var(--gray-50);
}

.data-table.preview th {
    background: var(--primary-bg);
    color: var(--primary-dark);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* Editable Table */
.data-table.editable td {
    cursor: text;
    position: relative;
}

.data-table.editable td.editing {
    padding: 2px;
}

.data-table.editable td.editing input {
    width: 100%;
    height: 100%;
    padding: 6px 12px;
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    outline: none;
    background: white;
}

/* Row Status Indicators */
.data-table tr.row-ok td:first-child {
    border-left: 4px solid var(--success);
}

.data-table tr.row-warning td:first-child {
    border-left: 4px solid var(--warning);
}

.data-table tr.row-error td:first-child {
    border-left: 4px solid var(--error);
}

.data-table tr.row-error {
    background: var(--error-bg);
}

.data-table tr.row-warning {
    background: var(--warning-bg);
}

.cell-status {
    width: 32px;
    text-align: center !important;
    padding: 8px 4px !important;
}

.cell-status i {
    font-size: 0.9rem;
}

.cell-actions {
    width: 40px;
    text-align: center !important;
}

.cell-actions button {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.cell-actions button:hover {
    background: var(--error-bg);
    color: var(--error);
}

.cell-error {
    position: relative;
}

.cell-error::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--error);
}

.cell-warning::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--warning);
}

.cell-tooltip {
    display: none;
    position: absolute;
    bottom: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-800);
    color: white;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 100;
    pointer-events: none;
}

.cell-error:hover .cell-tooltip,
.cell-warning:hover .cell-tooltip {
    display: block;
}

/* === Mapping Section === */
.mapping-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 20px;
}

.mapping-header p {
    margin-top: 4px;
}

.template-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.mapping-config {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 12px 20px;
    margin-bottom: 20px;
}

.config-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.config-row label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.9rem;
}

/* Mapping Grid */
.mapping-grid {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}

.mapping-grid-header {
    display: grid;
    grid-template-columns: 200px 70px 200px 1fr 120px;
    gap: 0;
    padding: 10px 16px;
    background: var(--gray-100);
    border-bottom: 2px solid var(--gray-200);
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.mapping-rows {
    max-height: 500px;
    overflow-y: auto;
}

.mapping-row {
    display: grid;
    grid-template-columns: 200px 70px 200px 1fr 120px;
    gap: 0;
    padding: 10px 16px;
    align-items: center;
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}

.mapping-row:hover {
    background: var(--gray-50);
}

.mapping-row.required .mg-col-ids {
    font-weight: 600;
}

.mg-col {
    padding: 0 4px;
}

.mg-col-ids {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--gray-800);
}

.mg-col-ids .field-info {
    font-size: 0.7rem;
    color: var(--gray-400);
    display: block;
}

.mg-col-required {
    text-align: center;
}

.required-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--error-bg);
    color: var(--error);
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
}

.optional-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--gray-100);
    color: var(--gray-400);
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 500;
}

.mg-col-preview {
    color: var(--gray-500);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mg-col-rules select {
    font-size: 0.8rem;
}

/* === Sanitization Panel === */
.sanitization-panel {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.sanitization-panel h3 {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-700);
}

.sanitization-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.price-markup-section {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--gray-200);
}

.markup-input-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* === Validation Summary === */
.validation-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.summary-card {
    background: white;
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.summary-icon {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.summary-total .summary-icon { color: var(--primary); }
.summary-ok .summary-icon { color: var(--success); }
.summary-warn .summary-icon { color: var(--warning); }
.summary-error .summary-icon { color: var(--error); }

.summary-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.summary-label {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* === Filter Bar === */
.filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    gap: 4px;
    background: var(--gray-100);
    padding: 4px;
    border-radius: var(--radius-sm);
}

.filter-btn {
    padding: 6px 14px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-btn.active {
    background: white;
    color: var(--gray-900);
    box-shadow: var(--shadow-sm);
}

.filter-btn:hover:not(.active) {
    color: var(--gray-800);
}

.filter-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
}

.search-box i {
    color: var(--gray-400);
    font-size: 0.85rem;
}

.search-box input {
    border: none;
    outline: none;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    width: 150px;
    color: var(--gray-800);
}

/* === Data Grid === */
.data-grid-wrapper {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: auto;
    max-height: 550px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 12px;
}

/* === Pagination === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 8px 0;
    margin-bottom: 16px;
}

#page-info {
    font-size: 0.85rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* === Transfer Section === */
.transfer-status {
    max-width: 600px;
    margin: 60px auto;
    text-align: center;
}

.transfer-preparing {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.transfer-preparing .spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.transfer-preparing h2 {
    font-size: 1.3rem;
    color: var(--gray-800);
}

.xml-preview-section {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: 30px;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-sm);
}

.xml-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.xml-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: var(--gray-700);
}

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

.xml-code {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--gray-900);
    color: #e2e8f0;
    overflow-x: auto;
    max-height: 400px;
    tab-size: 2;
}

/* === Transfer Result === */
.transfer-result {
    max-width: 500px;
    margin: 40px auto;
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 16px;
}

.result-title {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.result-message {
    margin-bottom: 30px;
}

.result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: white;
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

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

.btn-danger:hover:not(:disabled) {
    background: #b91c1c;
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--gray-800);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 12px 28px;
    font-size: 1rem;
}

/* === Form Elements === */
.input-sm {
    width: 80px;
    padding: 6px 10px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--gray-800);
    outline: none;
    transition: border-color var(--transition-fast);
}

.input-sm:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.input-full {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--gray-800);
    outline: none;
    transition: border-color var(--transition-fast);
}

.input-full:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.select-styled {
    padding: 8px 32px 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--gray-700);
    background: white url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2394a3b8'/%3E%3C/svg%3E") no-repeat right 12px center;
    appearance: none;
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition-fast);
}

.select-styled:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.select-sm {
    padding: 4px 28px 4px 8px;
    font-size: 0.8rem;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--gray-700);
}

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

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-600);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-error {
    background: var(--error-bg);
    color: var(--error);
}

/* === Action Bar === */
.action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    margin-top: 8px;
}

.action-bar-left, .action-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-text {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* === Modals === */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 85vh;
    overflow-y: auto;
    animation: modalIn 0.25s ease;
}

.modal-lg {
    max-width: 750px;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    color: var(--gray-500);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
}

/* === History === */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 16px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-item:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.history-icon {
    font-size: 1.5rem;
}

.history-details {
    flex: 1;
}

.history-filename {
    font-weight: 600;
    color: var(--gray-800);
}

.history-meta {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.history-status {
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 999px;
    font-weight: 600;
}

.history-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-400);
}

.history-empty i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    display: block;
}

/* === Toast Notifications === */
.toast-container {
    position: fixed;
    top: calc(var(--nav-height) + 12px);
    right: 24px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--gray-400);
    animation: toastIn 0.3s ease;
    position: relative;
}

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

.toast-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.toast-success .toast-icon { color: var(--success); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-error .toast-icon { color: var(--error); }
.toast-info .toast-icon { color: var(--info); }

.toast-text {
    flex: 1;
    font-size: 0.85rem;
    color: var(--gray-700);
    line-height: 1.4;
}

.toast-text strong {
    display: block;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.toast-close {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 2px;
    font-size: 0.9rem;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(20px); }
}

.toast.removing {
    animation: toastOut 0.2s ease forwards;
}

/* === Text Colors === */
.text-error { color: var(--error) !important; }
.text-warning { color: var(--warning) !important; }
.text-success { color: var(--success) !important; }
.text-info { color: var(--info) !important; }

/* === Release Panel (Step 4) === */
.release-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 24px;
    background: linear-gradient(135deg, #f0fdf4, #dcfce7);
    border: 1.5px solid var(--success-border);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.release-panel-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.release-icon {
    width: 48px;
    height: 48px;
    background: var(--success);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
    flex-shrink: 0;
}

.release-panel-left h3 {
    font-size: 1rem;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.release-panel-left p {
    font-size: 0.82rem;
    color: var(--gray-600);
}

.release-panel-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-release {
    background: var(--success);
    color: white;
    border-color: var(--success);
    white-space: nowrap;
    padding: 10px 22px;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-release:hover {
    background: #15803d;
    box-shadow: 0 4px 12px rgba(22,163,74,0.3);
}

.release-success {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    width: 100%;
}

.release-success strong {
    display: block;
    color: var(--gray-900);
    font-size: 1rem;
}

.release-success p {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin: 0;
}

/* ============================================
   XML Upload UI — Format-Tabs & XML-Komponenten
   ============================================ */

/* --- Format-Tabs (Excel / XML Umschalter) --- */
.upload-format-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.format-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 28px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: white;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
    color: var(--gray-500);
    min-width: 140px;
}

.format-tab i {
    font-size: 1.5rem;
    margin-bottom: 2px;
}

.format-tab span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    transition: color var(--transition-fast);
}

.format-tab small {
    font-size: 0.72rem;
    color: var(--gray-400);
    font-weight: 400;
}

.format-tab:hover {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

.format-tab[data-tab="excel"]:hover,
.format-tab[data-tab="excel"].active {
    border-color: var(--success-border);
    background: var(--success-bg);
    color: var(--success);
}

.format-tab[data-tab="excel"].active i,
.format-tab[data-tab="excel"].active span {
    color: var(--success);
}

.format-tab[data-tab="xml"]:hover,
.format-tab[data-tab="xml"].active {
    border-color: var(--info-border);
    background: var(--info-bg);
    color: var(--info);
}

.format-tab[data-tab="xml"].active i,
.format-tab[data-tab="xml"].active span {
    color: var(--info);
}

/* --- XML Drop Zone (blaue Variante) --- */
.drop-zone-xml {
    border-color: var(--info-border);
}

.drop-zone-xml:hover,
.drop-zone-xml.drag-over {
    border-color: var(--info);
    background: var(--info-bg);
}

.drop-zone-xml .drop-zone-hover {
    background: rgba(8, 145, 178, 0.08);
    color: var(--info);
}

/* --- XML-Modus-Banner (nach Parse) --- */
.xml-mode-banner {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--success-border);
    background: var(--success-bg);
    animation: fadeIn 0.3s ease;
}

.xml-mode-banner.banner-generic {
    border-color: var(--info-border);
    background: var(--info-bg);
}

.xml-mode-icon {
    font-size: 1.6rem;
    color: var(--success);
    flex-shrink: 0;
}

.xml-mode-banner.banner-generic .xml-mode-icon {
    color: var(--info);
}

.xml-mode-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.xml-mode-text strong {
    font-size: 0.9rem;
    color: var(--gray-900);
}

.xml-mode-text span {
    font-size: 0.82rem;
    color: var(--gray-600);
}

/* --- XML Pfad-Konfigurator --- */
.xml-path-config {
    background: white;
    border: 1.5px solid var(--info-border);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    animation: fadeIn 0.25s ease;
}

.xml-path-header {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.xml-path-header i {
    color: var(--info);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.xml-path-header strong {
    font-size: 0.95rem;
    color: var(--gray-800);
    font-weight: 700;
}

.xml-path-header span {
    font-size: 0.82rem;
    color: var(--gray-500);
}

/* Kandidaten-Schaltflächen */
.xml-path-candidates {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.xml-path-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 8px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: var(--gray-50);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
    text-align: left;
}

.xml-path-btn:hover {
    border-color: var(--info-border);
    background: var(--info-bg);
}

.xml-path-btn.active {
    border-color: var(--info);
    background: var(--info-bg);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.12);
}

.xml-path-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--gray-800);
    font-family: var(--font-mono);
}

.xml-path-btn.active .xml-path-name {
    color: var(--info);
}

.xml-path-meta {
    font-size: 0.72rem;
    color: var(--gray-400);
    font-weight: 400;
    font-family: var(--font-sans);
}

/* Eigener Pfad */
.xml-path-custom {
    padding-top: 10px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.xml-path-custom label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--gray-600);
}

.xml-path-custom-input {
    display: flex;
    gap: 8px;
    align-items: center;
}

.xml-path-custom-input .input-full {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

/* file-info-actions (fehlte bisher) */
.file-info-actions {
    flex-shrink: 0;
}

/* === Utilities === */
.hidden { display: none !important; }

/* === Responsive === */
@media (max-width: 1024px) {
    .mapping-grid-header,
    .mapping-row {
        grid-template-columns: 160px 60px 160px 1fr 100px;
    }
    
    .validation-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    #top-nav {
        padding: 0 12px;
    }
    
    .step-label {
        display: none;
    }
    
    .step-line {
        width: 30px;
        margin-bottom: 0;
    }
    
    #app-main {
        padding: 16px;
    }
    
    .drop-zone {
        padding: 40px 20px;
    }
    
    .mapping-grid-header,
    .mapping-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    
    .mg-col-preview,
    .mg-col-rules {
        display: none;
    }
    
    .validation-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .action-bar {
        flex-direction: column;
        gap: 12px;
    }
    
    .session-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .banner-details {
        margin-left: 0;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .nav-right .nav-btn:not(#btn-history) {
        display: none;
    }
    
    .template-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .template-controls select {
        width: 100%;
    }
    
    .mapping-header {
        flex-direction: column;
    }
}