:root {
    /* Light Liquid Glass Theme */
    --bg-body: linear-gradient(135deg, #e8f4fc 0%, #f0e6fa 50%, #e6f0fa 100%);
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.85);
    --text-main: #1a1a2e;
    --text-second: #6b7280;
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    --accent-glow: rgba(14, 165, 233, 0.25);
    --border: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.4);
    --input-bg: rgba(255, 255, 255, 0.5);
    --radius: 16px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --glass-blur: blur(12px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--bg-body);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: var(--font);
    display: flex;
    justify-content: center;
    padding: 40px 20px;
    min-height: 100vh;
}

.layout-container {
    width: 100%;
    max-width: 1000px;
}

.input-with-button {
    display: flex;
    gap: 8px;
}

.input-with-button input {
    flex: 1;
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(13, 16, 27, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: #ffffff;
    border-radius: 14px;
    padding: 16px;
    width: min(520px, 92vw);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    font-weight: 600;
}

.modal-search {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--input-bg);
    margin-bottom: 12px;
}

.modal-list {
    max-height: 280px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.modal-item {
    padding: 10px 12px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
}

.modal-item:last-child {
    border-bottom: none;
}

.modal-item:hover {
    background: #f2f6ff;
}

/* Tabs */
.tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.tab-btn {
    background: transparent;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-second);
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 20px;
    transition: 0.2s;
}

.tab-btn.active {
    background-color: var(--bg-card);
    color: var(--text-main);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadein 0.3s;
}

@keyframes fadein {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Cards & Layout */
.split-view {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 20px;
    align-items: start;
}

.card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    border: 1px solid var(--glass-border);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

/* Forms */
.form-section {
    margin-bottom: 24px;
}

.section-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-second);
    margin-bottom: 10px;
    font-weight: 600;
}

.segmented-control {
    background: var(--input-bg);
    padding: 4px;
    border-radius: 8px;
    display: flex;
}

.segmented-control label {
    flex: 1;
    text-align: center;
    cursor: pointer;
    position: relative;
    z-index: 1;
}

.segmented-control input {
    display: none;
}

.segmented-control span {
    display: block;
    padding: 8px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: 0.2s;
    color: var(--text-second);
}

.segmented-control input:checked+span {
    background: #fff;
    color: var(--text-main);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.field label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--text-second);
}

.field input,
.field select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--glass-border);
    background: var(--input-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 10px;
    font-size: 1rem;
    color: var(--text-main);
    transition: all 0.2s ease;
}

.field input:focus,
.field select:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

/* Toggles */
.toggles-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 0.95rem;
}

.toggle-row input {
    display: none;
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background: var(--input-bg);
    border-radius: 20px;
    position: relative;
    transition: 0.3s;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: 0.3s;
}

.toggle-row input:checked~.toggle-switch {
    background: var(--accent);
}

.toggle-row input:checked~.toggle-switch::after {
    transform: translateX(20px);
}

/* Buttons */
.cta-button {
    width: 100%;
    background: linear-gradient(135deg, var(--accent) 0%, #6366f1 100%);
    color: #fff;
    border: none;
    padding: 16px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
    filter: brightness(1.05);
}

.save-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
}

/* Results */
.empty-placeholder {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-second);
    font-size: 0.9rem;
    min-height: 300px;
}

.hidden {
    display: none;
}

.result-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--input-bg);
}

.result-header span {
    display: block;
    color: var(--text-second);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.main-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 5px 0;
    letter-spacing: -1px;
}

.kpi-row {
    display: flex;
    justify-content: space-around;
    margin-bottom: 30px;
}

.kpi-item {
    text-align: center;
}

.kpi-item .label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-second);
}

.kpi-item .value {
    font-size: 1.1rem;
    font-weight: 600;
}

.cost-breakdown h5 {
    margin-bottom: 15px;
    font-weight: 600;
    font-size: 0.95rem;
}

.breakdown-item {
    margin-bottom: 12px;
}

.bd-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.progress-bg {
    height: 6px;
    background: var(--input-bg);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.5s ease;
}

.total-vc-row {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px dashed var(--border);
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    color: var(--text-second);
}

/* Settings */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    /* Strict 3 columns for alignment */
    gap: 24px 20px;
    /* More vertical gap */
}

.field {
    display: flex;
    flex-direction: column;
}

.field label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 8px;
    color: var(--text-second);
    min-height: 42px;
    /* Fixed height to accommodate 2 lines and align inputs */
    display: flex;
    align-items: flex-end;
    /* Align text to bottom of label area */
    line-height: 1.3;
    padding-bottom: 2px;
}

.mt-4 {
    margin-top: 30px;
    margin-bottom: 20px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }

    .split-view {
        grid-template-columns: 1fr;
    }
}

.actions {
    margin-top: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.faded {
    color: var(--text-second);
    font-size: 0.9rem;
}

/* Table Preview Window */
.table-responsive {
    margin-top: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;

    /* Window Logic */
    max-height: 400px;
    overflow: auto;

    /* Custom Scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--input-bg);
}

.table-responsive::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.table-responsive::-webkit-scrollbar-track {
    background: var(--input-bg);
}

.table-responsive::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 4px;
}

.table-responsive::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-second);
}

table {
    width: max-content;
    min-width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    white-space: nowrap;
}

th,
td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}

th {
    background: #F5F5F7;
    font-weight: 600;
    color: var(--text-main);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.disabled-row {
    opacity: 0.5;
    pointer-events: none;
    filter: grayscale(100%);
}

/* Disabled toggle rows (for wicket mode) */
.toggle-row.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.toggle-row.disabled .toggle-switch {
    background: var(--border) !important;
}

/* Batch weight display */
.batch-weight-display {
    background: rgba(14, 165, 233, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: 12px;
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.batch-weight-label {
    font-size: 0.9rem;
    color: var(--text-second);
    font-weight: 500;
}

.batch-weight-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.5px;
}

/* Ink Layer Cards - Premium Style */
.ink-layer-row {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 14px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 44px;
    gap: 16px;
    align-items: end;
    transition: all 0.2s ease;
}

.ink-layer-row:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.layer-field {
    display: flex;
    flex-direction: column;
}

.layer-field label,
.ink-layer-row label {
    font-size: 0.8rem;
    color: var(--text-second);
    margin-bottom: 8px;
    display: block;
    font-weight: 500;
}

.ink-layer-row select,
.ink-layer-row input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.7);
    border-radius: 10px;
    font-size: 1rem;
    color: var(--text-main);
    transition: all 0.2s ease;
    -moz-appearance: textfield;
    appearance: textfield;
}

/* Hide number input spinners */
.ink-layer-row input::-webkit-outer-spin-button,
.ink-layer-row input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.ink-layer-row select:focus,
.ink-layer-row input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.remove-layer-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-layer-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    transform: scale(1.05);
}

/* Add Layer Button */
#addLayerBtn {
    width: 100%;
    padding: 14px;
    background: transparent;
    border: 2px dashed var(--glass-border);
    border-radius: 12px;
    color: var(--text-second);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

#addLayerBtn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(14, 165, 233, 0.05);
}

/* Secondary Button Improvements */
.secondary-btn {
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-main);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--accent);
}

.secondary-btn.small {
    padding: 8px 12px;
    font-size: 0.85rem;
}

/* Improved Tabs */
.tab-btn {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    border: 1px solid transparent;
}

.tab-btn.active {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--glass-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Improved Toggle Switch */
.toggle-switch {
    background: rgba(0, 0, 0, 0.1);
}

.toggle-row input:checked~.toggle-switch {
    background: linear-gradient(135deg, var(--accent) 0%, #6366f1 100%);
    box-shadow: 0 2px 10px var(--accent-glow);
}

/* Ink Fields Grid - Collapsible */
.ink-fields-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 16px;
    max-height: 1000px;
    overflow: hidden;
    opacity: 1;
    transition: max-height 0.4s ease, opacity 0.3s ease, margin 0.3s ease;
}

.ink-fields-grid.hidden {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    pointer-events: none;
}

.roll-field {
    max-width: 200px;
}

/* Large Input */
.large-input {
    padding: 16px 18px !important;
    font-size: 1.1rem !important;
    border-radius: 12px !important;
}

/* Responsive ink layers */
@media (max-width: 600px) {
    .ink-layer-row {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
    }
    
    .ink-layer-row .layer-field:first-child {
        grid-column: 1 / -1;
    }
    
    .remove-layer-btn {
        grid-column: 2;
        justify-self: end;
    }
}

/* Autocomplete Dropdown */
.autocomplete-wrapper {
    position: relative;
    width: 100%;
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-top: none;
    border-radius: 0 0 12px 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    max-height: 200px;
    overflow-y: auto;
    z-index: 100;
}

.autocomplete-dropdown.hidden {
    display: none;
}

.autocomplete-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.15s ease;
    font-size: 0.95rem;
    color: var(--text-main);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
    background: rgba(14, 165, 233, 0.1);
}

.autocomplete-item mark {
    background: rgba(14, 165, 233, 0.3);
    color: inherit;
    padding: 0 2px;
    border-radius: 3px;
}

/* KNN Neighbor Cards */
.neighbor-card {
    background: rgba(255, 255, 255, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 10px;
    transition: all 0.2s ease;
}

.neighbor-card:hover {
    background: rgba(255, 255, 255, 0.6);
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.neighbor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.neighbor-order {
    color: var(--text-main);
}

.neighbor-distance {
    background: var(--accent-glow);
    color: var(--accent);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
}

.neighbor-product {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--text-main);
}

.neighbor-customer {
    display: block;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 8px;
}

.neighbor-meta {
    font-size: 0.78rem;
    color: var(--text-second);
    line-height: 1.5;
    border-top: 1px dashed var(--glass-border);
    padding-top: 8px;
}

.knn-debug-table {
    display: grid;
    gap: 6px;
}

.knn-debug-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 4px 0;
    border-bottom: 1px dashed var(--glass-border);
}

.knn-debug-row:last-child {
    border-bottom: none;
}

.knn-debug-key {
    color: var(--text-second);
}

.knn-debug-val {
    color: var(--text-main);
    text-align: right;
}