/* ==========================================================================
   LiXX Cell Pack Matcher - Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Variables)
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #242b3d;
    --text-primary: #e7e9ea;
    --text-secondary: #8b98a5;
    --text-muted: #6e7681;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: rgba(59, 130, 246, 0.15);
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border-color: #2f3336;

    /* Cell visualization colors */
    --cell-low: #ef4444;
    --cell-mid: #22c55e;
    --cell-high: #3b82f6;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Typography */
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', Consolas, monospace;

    /* Borders & Shadows */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);

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

/* Light mode support */
@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #ffffff;
        --bg-secondary: #f8fafc;
        --bg-tertiary: #f1f5f9;
        --text-primary: #1e293b;
        --text-secondary: #64748b;
        --text-muted: #94a3b8;
        --border-color: #e2e8f0;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
        --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    }
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Focus styles for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--space-lg);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    color: var(--accent);
}

.logo h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    margin: var(--space-sm) 0 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.card h2 {
    margin: 0 0 var(--space-lg);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card h3 {
    margin: var(--space-lg) 0 var(--space-md);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Form Elements
   -------------------------------------------------------------------------- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="text"],
input[type="number"],
select {
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:hover,
input[type="number"]:hover,
select:hover {
    border-color: var(--text-muted);
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
    outline: none;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    cursor: pointer;
    accent-color: var(--accent);
}

small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

output {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-secondary {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-primary);
    border-color: var(--text-muted);
}

.btn-ghost {
    color: var(--text-secondary);
    background: transparent;
}

.btn-ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

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

.btn-danger:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.1);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    width: 100%;
}

.btn-icon {
    font-size: 1.1em;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Configuration Grid
   -------------------------------------------------------------------------- */
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-lg);
}

.config-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent);
    background: var(--accent-light);
    border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   Cell Input Section
   -------------------------------------------------------------------------- */
.cell-input-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.cell-input-header p {
    margin: 0;
    color: var(--text-secondary);
}

.cell-table-wrapper {
    overflow-x: auto;
    margin: 0 calc(-1 * var(--space-xl));
    padding: 0 var(--space-xl);
}

.cell-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.cell-table th,
.cell-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.cell-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    position: sticky;
    top: 0;
}

.cell-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.cell-table input {
    width: 100%;
    min-width: 60px;
}

.cell-table .cell-label-input {
    min-width: 80px;
}

.cell-table .btn-remove {
    padding: var(--space-xs) var(--space-sm);
    color: var(--danger);
    background: transparent;
    border: none;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.cell-table .btn-remove:hover {
    opacity: 1;
}

.cell-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.cell-stats strong {
    color: var(--text-primary);
    font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Settings Grid
   -------------------------------------------------------------------------- */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

/* --------------------------------------------------------------------------
   Progress Section
   -------------------------------------------------------------------------- */
.progress-container {
    margin-bottom: var(--space-lg);
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--success));
    border-radius: 4px;
    transition: width var(--transition-normal);
}

.progress-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.progress-stats strong {
    color: var(--text-primary);
    font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Warning Banner
   -------------------------------------------------------------------------- */
.warning-banner {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-content {
    font-size: 0.875rem;
    color: var(--text-primary);
}

.warning-content strong {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--warning);
}

.warning-content ul {
    margin: 0;
    padding-left: var(--space-lg);
}

.warning-content li {
    margin-bottom: var(--space-xs);
}

.warning-content a {
    color: var(--accent);
}

/* --------------------------------------------------------------------------
   Results Summary
   -------------------------------------------------------------------------- */
.results-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.result-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    text-align: center;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Pack Visualization
   -------------------------------------------------------------------------- */
.pack-visualization {
    margin-bottom: var(--space-xl);
}

.pack-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.pack-row {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.pack-row-label {
    min-width: 30px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: right;
}

.pack-cells {
    display: flex;
    gap: var(--space-xs);
}

.pack-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 70px;
    padding: var(--space-sm);
    background: var(--cell-mid);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    color: white;
    text-align: center;
    transition: transform var(--transition-fast);
}

.pack-cell:hover {
    transform: scale(1.05);
}

.pack-cell .cell-label {
    font-weight: 600;
    margin-bottom: 2px;
}

.pack-cell .cell-capacity {
    opacity: 0.9;
}

.pack-cell .cell-ir {
    opacity: 0.7;
    font-size: 0.65rem;
}

.pack-legend {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-md);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.legend-color {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 2px;
    margin-right: var(--space-xs);
    vertical-align: middle;
}

/* --------------------------------------------------------------------------
   Results Table
   -------------------------------------------------------------------------- */
.results-table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--space-xl);
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.results-table th,
.results-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.results-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.results-table td {
    font-family: var(--font-mono);
}

.results-table .deviation-good {
    color: var(--success);
}

.results-table .deviation-warning {
    color: var(--warning);
}

.results-table .deviation-bad {
    color: var(--danger);
}

/* --------------------------------------------------------------------------
   Excluded Cells
   -------------------------------------------------------------------------- */
.excluded-cells {
    padding: var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.excluded-cells h3 {
    margin-top: 0;
}

.excluded-cells p {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Export Buttons
   -------------------------------------------------------------------------- */
.export-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
footer {
    text-align: center;
    padding: var(--space-xl) 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
}

footer a:hover {
    color: var(--accent);
}

.disclaimer {
    margin-top: var(--space-sm);
    font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Dialog / Modal
   -------------------------------------------------------------------------- */
dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 400px;
    width: 90%;
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.7);
}

dialog h2 {
    margin: 0 0 var(--space-lg);
}

.shortcuts-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-sm) var(--space-lg);
    margin-bottom: var(--space-xl);
}

.shortcuts-list dt {
    font-weight: 500;
}

.shortcuts-list dd {
    margin: 0;
    color: var(--text-secondary);
}

kbd {
    display: inline-block;
    padding: 2px 6px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
    .container {
        padding: var(--space-md);
    }

    .card {
        padding: var(--space-lg);
    }

    .logo h1 {
        font-size: 1.25rem;
    }

    .config-grid,
    .settings-grid {
        grid-template-columns: 1fr;
    }

    .cell-input-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .button-group {
        width: 100%;
    }

    .button-group .btn {
        flex: 1;
    }

    .results-summary {
        grid-template-columns: repeat(2, 1fr);
    }

    .pack-cell {
        min-width: 55px;
        padding: var(--space-xs);
    }
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    body {
        background: white;
        color: black;
    }

    .card {
        border: 1px solid #ccc;
        box-shadow: none;
        break-inside: avoid;
    }

    .btn,
    #progress-section,
    .export-buttons {
        display: none;
    }

    .warning-banner {
        border: 2px solid #f59e0b;
    }
}