/* Theme System */
:root {
    /* Sunny Day Theme (Default) */
    --sunny-primary-bg: #5195a8;
    --sunny-secondary-bg: #1f657a;
    --sunny-tertiary-bg: #4a752c;
    --sunny-board-bg: #578a34;
    --sunny-cell-bg: #a2d149;
    --sunny-cell-alt-bg: #aad751;
    
    --sunny-ui-brown: #A0522D;
    --sunny-ui-brown-dark: #8B4513;
    --sunny-ui-brown-darker: #654321;
    --sunny-ui-accent: #CD853F;
    
    --sunny-player1-color: #4169E1;
    --sunny-player1-border: #0000CD;
    --sunny-player1-shadow: #2b24b2;
    --sunny-player2-color: #DC143C;
    --sunny-player2-border: #9f1f1f;
    --sunny-player2-shadow: #8a0f0f;
    
    --sunny-text-primary: #F5DEB3;
    --sunny-text-dark: #333;
    --sunny-text-medium: #555;
    --sunny-text-light: #666;
    --sunny-text-muted: #999;
    
    --sunny-valid-move: #90EE90;
    --sunny-hover-danger: #e02d50;
    --sunny-preview-valid: #CD853F;
    --sunny-preview-invalid: rgba(220, 20, 60, 0.7);
    
    --sunny-modal-bg: #fff;
    --sunny-modal-overlay: rgba(0, 0, 0, 0.5);
    --sunny-modal-accent: #4CAF50;
    --sunny-modal-border: #e0e0e0;
    
    --sunny-dev-bg: rgba(31, 101, 122, 0.95);
    --sunny-dev-border: #5195a8;
    --sunny-dev-text: #F5DEB3;
    --sunny-dev-label: #a0d8ea;
    --sunny-dev-btn: #666;
    
    /* Modern Theme (formerly Classic) */
    --modern-primary-bg: #2c3e50;
    --modern-secondary-bg: #34495e;
    --modern-tertiary-bg: #7f8c8d;
    --modern-board-bg: #95a5a6;
    --modern-cell-bg: #ecf0f1;
    --modern-cell-alt-bg: #bdc3c7;
    
    --modern-ui-brown: #8B4513;
    --modern-ui-brown-dark: #654321;
    --modern-ui-brown-darker: #3e2723;
    --modern-ui-accent: #D2691E;
    
    --modern-player1-color: #3498db;
    --modern-player1-border: #2980b9;
    --modern-player1-shadow: #1f4e79;
    --modern-player2-color: #e74c3c;
    --modern-player2-border: #c0392b;
    --modern-player2-shadow: #922b21;
    
    --modern-text-primary: #ecf0f1;
    --modern-text-dark: #2c3e50;
    --modern-text-medium: #34495e;
    --modern-text-light: #7f8c8d;
    --modern-text-muted: #95a5a6;
    
    --modern-valid-move: #2ecc71;
    --modern-hover-danger: #e74c3c;
    --modern-preview-valid: #f39c12;
    --modern-preview-invalid: rgba(231, 76, 60, 0.7);
    
    --modern-modal-bg: #fff;
    --modern-modal-overlay: rgba(0, 0, 0, 0.5);
    --modern-modal-accent: #27ae60;
    --modern-modal-border: #bdc3c7;
    
    --modern-dev-bg: rgba(44, 62, 80, 0.95);
    --modern-dev-border: #34495e;
    --modern-dev-text: #ecf0f1;
    --modern-dev-label: #3498db;
    --modern-dev-btn: #7f8c8d;
    
    /* Classic Theme (Woody/Wooden) */
    --classic-primary-bg: #8B4513;
    --classic-secondary-bg: #A0522D;
    --classic-tertiary-bg: #CD853F;
    --classic-board-bg: #DEB887;
    --classic-cell-bg: #F5DEB3;
    --classic-cell-alt-bg: #DEB887;
    
    --classic-ui-brown: #654321;
    --classic-ui-brown-dark: #3e2723;
    --classic-ui-brown-darker: #2d1810;
    --classic-ui-accent: #D2691E;
    
    --classic-player1-color: #4169E1;
    --classic-player1-border: #0000CD;
    --classic-player1-shadow: #2b24b2;
    --classic-player2-color: #DC143C;
    --classic-player2-border: #8B0000;
    --classic-player2-shadow: #660000;
    
    --classic-text-primary: #2F1B14;
    --classic-text-dark: #1a0f0a;
    --classic-text-medium: #3e2723;
    --classic-text-light: #654321;
    --classic-text-muted: #8B4513;
    
    --classic-valid-move: #90EE90;
    --classic-hover-danger: #CD5C5C;
    --classic-preview-valid: #32CD32;
    --classic-preview-invalid: rgba(220, 20, 60, 0.7);
    
    --classic-modal-bg: #F5DEB3;
    --classic-modal-overlay: rgba(47, 27, 20, 0.7);
    --classic-modal-accent: #228B22;
    --classic-modal-border: #DEB887;
    
    --classic-dev-bg: rgba(139, 69, 19, 0.95);
    --classic-dev-border: #A0522D;
    --classic-dev-text: #F5DEB3;
    --classic-dev-label: #4169E1;
    --classic-dev-btn: #654321;
    
    /* Active Theme Variables (Default to Modern) */
    --primary-bg: var(--modern-primary-bg);
    --secondary-bg: var(--modern-secondary-bg);
    --tertiary-bg: var(--modern-tertiary-bg);
    --board-bg: var(--modern-board-bg);
    --cell-bg: var(--modern-cell-bg);
    --cell-alt-bg: var(--modern-cell-alt-bg);
    
    --ui-brown: var(--modern-ui-brown);
    --ui-brown-dark: var(--modern-ui-brown-dark);
    --ui-brown-darker: var(--modern-ui-brown-darker);
    --ui-accent: var(--modern-ui-accent);
    
    --player1-color: var(--modern-player1-color);
    --player1-border: var(--modern-player1-border);
    --player1-shadow: var(--modern-player1-shadow);
    --player2-color: var(--modern-player2-color);
    --player2-border: var(--modern-player2-border);
    --player2-shadow: var(--modern-player2-shadow);
    
    --text-primary: var(--modern-text-primary);
    --text-dark: var(--modern-text-dark);
    --text-medium: var(--modern-text-medium);
    --text-light: var(--modern-text-light);
    --text-muted: var(--modern-text-muted);
    
    --valid-move: var(--modern-valid-move);
    --hover-danger: var(--modern-hover-danger);
    --preview-valid: var(--modern-preview-valid);
    --preview-invalid: var(--modern-preview-invalid);
    
    --modal-bg: var(--modern-modal-bg);
    --modal-overlay: var(--modern-modal-overlay);
    --modal-accent: var(--modern-modal-accent);
    --modal-border: var(--modern-modal-border);
    
    --dev-bg: var(--modern-dev-bg);
    --dev-border: var(--modern-dev-border);
    --dev-text: var(--modern-dev-text);
    --dev-label: var(--modern-dev-label);
    --dev-btn: var(--modern-dev-btn);
    
    /* Sizes */
    --cell-size: 32px;
    --fence-width: 16px;
    --board-size: 550px;
    --border-radius: 8px;
    --border-radius-small: 4px;
    --border-radius-large: 12px;
    
    /* Mobile scaling factor */
    --mobile-scale: 1;
}

/* Flex Layout Utilities */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-gap-sm {
    gap: 8px;
}

.flex-gap-md {
    gap: 10px;
}

.flex-gap-lg {
    gap: 20px;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--primary-bg);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-primary);
}

/* Layout */
.simple-container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--secondary-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.game-area {
    /* Uses flex utility classes */
}

.board-container {
    flex: 1;
    background: var(--tertiary-bg);
    border-radius: var(--border-radius);
    padding: 20px;
}

.sidebar {
    width: 280px;
}

/* Board Styles */
.board {
    display: grid;
    grid-template-columns: repeat(17, 1fr);
    grid-template-rows: repeat(17, 1fr);
    gap: 1px;
    background: var(--board-bg);
    padding: calc(12px * var(--mobile-scale));
    width: var(--board-size);
    height: var(--board-size);
    border: calc(20px * var(--mobile-scale)) solid var(--board-bg);
    border-radius: var(--border-radius-small);
}

.cell {
    background: var(--cell-bg);
    font-weight: bold;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
    width: var(--cell-size);
    height: var(--cell-size);
    position: relative;
}

/* Checkerboard pattern */
.cell[data-row="0"][data-col="1"], .cell[data-row="0"][data-col="3"], .cell[data-row="0"][data-col="5"], .cell[data-row="0"][data-col="7"],
.cell[data-row="1"][data-col="0"], .cell[data-row="1"][data-col="2"], .cell[data-row="1"][data-col="4"], .cell[data-row="1"][data-col="6"], .cell[data-row="1"][data-col="8"],
.cell[data-row="2"][data-col="1"], .cell[data-row="2"][data-col="3"], .cell[data-row="2"][data-col="5"], .cell[data-row="2"][data-col="7"],
.cell[data-row="3"][data-col="0"], .cell[data-row="3"][data-col="2"], .cell[data-row="3"][data-col="4"], .cell[data-row="3"][data-col="6"], .cell[data-row="3"][data-col="8"],
.cell[data-row="4"][data-col="1"], .cell[data-row="4"][data-col="3"], .cell[data-row="4"][data-col="5"], .cell[data-row="4"][data-col="7"],
.cell[data-row="5"][data-col="0"], .cell[data-row="5"][data-col="2"], .cell[data-row="5"][data-col="4"], .cell[data-row="5"][data-col="6"], .cell[data-row="5"][data-col="8"],
.cell[data-row="6"][data-col="1"], .cell[data-row="6"][data-col="3"], .cell[data-row="6"][data-col="5"], .cell[data-row="6"][data-col="7"],
.cell[data-row="7"][data-col="0"], .cell[data-row="7"][data-col="2"], .cell[data-row="7"][data-col="4"], .cell[data-row="7"][data-col="6"], .cell[data-row="7"][data-col="8"],
.cell[data-row="8"][data-col="1"], .cell[data-row="8"][data-col="3"], .cell[data-row="8"][data-col="5"], .cell[data-row="8"][data-col="7"] {
    background: var(--cell-alt-bg);
}

.cell:hover:not(.player1):not(.player2) {
    background: var(--hover-danger);
}

.valid-move {
    background: var(--valid-move) !important;
}

/* Player Styles */
.player1 {
    background: var(--player1-color) !important;
    color: white;
    border: 2px solid var(--player1-border) !important;
    border-radius: 50%;
}

.player2 {
    background: var(--player2-color) !important;
    color: white;
    border: 2px solid var(--player2-border) !important;
    border-radius: 50%;
}

.player1-color {
    color: var(--player2-color);
    text-shadow: 1px 1px 0 var(--player2-shadow), -1px 1px 0 var(--player2-shadow), 1px -1px 0 var(--player2-shadow), -1px -1px 0 var(--player2-shadow);
}

.player2-color {
    color: var(--player1-color);
    text-shadow: 1px 1px 0 var(--player1-shadow), -1px 1px 0 var(--player1-shadow), 1px -1px 0 var(--player1-shadow), -1px -1px 0 var(--player1-shadow);
}

/* Fence Styles */
.fence-slot {
    background: var(--tertiary-bg);
    cursor: pointer;
    transition: all 0.2s ease;
    width: var(--fence-width);
    height: var(--fence-width);
    margin: auto;
}

.fence-slot:hover {
    background: var(--ui-accent);
    box-shadow: 0 0 3px rgba(205, 133, 63, 0.4);
}

.fence-slot[data-fence-type="horizontal"] {
    width: var(--cell-size);
    height: var(--fence-width);
    align-self: center;
    justify-self: center;
}

.fence-slot[data-fence-type="vertical"] {
    width: var(--fence-width);
    height: var(--cell-size);
    align-self: center;
    justify-self: center;
}

.horizontal-fence {
    background: var(--ui-brown) !important;
    width: var(--cell-size) !important;
    height: var(--fence-width) !important;
}

.vertical-fence {
    background: var(--ui-brown) !important;
    width: var(--fence-width) !important;
    height: var(--cell-size) !important;
}

.fence-post {
    background: var(--ui-brown) !important;
    width: var(--fence-width) !important;
    height: var(--fence-width) !important;
}

/* Fence Preview */
.fence-preview-valid {
    background: var(--preview-valid) !important;
}

.fence-preview-invalid {
    background: var(--preview-invalid) !important;
}

.fence-post-preview {
    background: var(--preview-valid) !important;
    width: var(--fence-width) !important;
    height: var(--fence-width) !important;
}

/* UI Components */
.panel {
    background: var(--ui-brown);
    padding: 15px;
    border-radius: 6px;
    border: 2px solid var(--ui-brown-dark);
    color: var(--text-primary);
}

.fence-count-display {
    margin-bottom: 8px;
    font-size: 14px;
}

.fence-count-display:last-child {
    margin-bottom: 0;
}

.player-label {
    font-weight: bold;
}

/* Scoreboard */
.fence-info:has(#player-wins) {
    text-align: center;
}

.score-label {
    font-size: 14px;
    font-weight: 500;
}

.score-number {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.score-separator {
    font-size: 20px;
    font-weight: bold;
    color: var(--text-primary);
    margin: 0 4px;
}

/* Controls */
.controls-section h3 {
    margin: 0 0 10px 0;
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.direction-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 8px;
    max-width: 150px;
    margin: 0 auto;
}

/* Base Button Styles */
.btn {
    border: 2px solid var(--ui-brown-dark);
    border-radius: var(--border-radius-small);
    background: var(--ui-brown);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn:hover:not(:disabled) {
    background: var(--ui-accent);
    box-shadow: 0 0 4px rgba(205, 133, 63, 0.4);
}

.btn:disabled {
    background: var(--ui-brown-darker);
    color: var(--text-muted);
    cursor: not-allowed;
    border-color: #444;
}

/* Button Variants */
.direction-btn {
    padding: 10px;
    font-size: 14px;
}

.action-btn {
    width: 100%;
    padding: 12px;
    font-size: 14px;
    font-weight: 600;
}

.action-btn:hover {
    box-shadow: 0 0 6px rgba(205, 133, 63, 0.5);
}

.dev-btn {
    background: var(--dev-btn);
    border: 1px solid var(--dev-btn);
    padding: 8px 16px;
    font-size: 12px;
    color: white;
    transition: all 0.3s;
}

.dev-btn:hover {
    background: rgba(102, 102, 102, 0.1) !important;
    color: var(--text-muted) !important;
}

#move-up { grid-column: 2; grid-row: 1; }
#move-left { grid-column: 1; grid-row: 2; }
#move-right { grid-column: 3; grid-row: 2; }
#move-down { grid-column: 2; grid-row: 3; }

.half-width {
    flex: 1;
}

/* Messages */
.message-display {
    padding: 12px;
    border-radius: var(--border-radius-small);
    text-align: center;
    font-weight: 500;
    border: 2px solid transparent;
}

/* Winner Celebration */
.winner-celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(107, 107, 107, 0.3);
    z-index: 1000;
}

.winner-message {
    background: var(--ui-brown);
    padding: 40px;
    border-radius: var(--border-radius-large);
    text-align: center;
    border: 3px solid var(--ui-brown-dark);
    box-shadow: 0 0 20px rgba(139, 69, 19, 0.5);
}

.winner-message h2 {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.winner-message p {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 20px;
}

/* Modal Styles */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-overlay);
}

.modal-content {
    background-color: var(--modal-bg);
    border-radius: 10px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.3s;
}

.close-btn:hover {
    color: var(--text-dark);
}

.modal h2 {
    color: var(--text-dark);
    margin-bottom: 20px;
    text-align: center;
    border-bottom: 2px solid var(--modal-accent);
    padding-bottom: 10px;
}

.rules-section {
    margin-bottom: 25px;
}

.rules-section h3 {
    color: var(--modal-accent);
    margin-bottom: 10px;
    font-size: 1.1em;
}

.rules-section p {
    margin-bottom: 10px;
    line-height: 1.6;
    color: var(--text-medium);
}

.rules-section ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.rules-section li {
    margin-bottom: 8px;
    line-height: 1.5;
    color: var(--text-light);
}

.rules-section strong {
    color: var(--text-dark);
}

#close-rules-btn {
    background-color: var(--modal-accent);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

/* Settings */
.settings-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--modal-border);
}

.settings-section h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
    font-size: 1.1em;
}

.setting-item {
    margin-bottom: 15px;
}

.setting-item label {
    font-weight: 500;
    color: var(--text-dark);
    cursor: pointer;
}

.setting-item input[type="checkbox"] {
    transform: scale(1.2);
    cursor: pointer;
    accent-color: var(--modal-accent);
}

.setting-item input[type="range"] {
    flex: 1;
    margin: 0 10px;
    accent-color: var(--text-dark);
}

#volume-display {
    min-width: 40px;
    text-align: center;
    font-weight: 500;
    color: var(--text-dark);
}

.rules-controls {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--modal-border);
}

.bot-selector {
    flex: 1;
    padding: 8px 12px;
    border: 2px solid #ddd;
    border-radius: var(--border-radius-small);
    background: white;
    color: var(--text-dark);
    font-size: 14px;
    cursor: pointer;
    transition: border-color 0.3s;
}

.bot-selector:hover {
    border-color: var(--modal-accent);
}

.bot-selector:focus {
    outline: none;
    border-color: var(--modal-accent);
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.3);
}

/* Dev Stats Display */
.dev-stats {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--dev-bg);
    border: 1px solid var(--dev-border);
    border-radius: 6px;
    padding: 10px;
    font-family: 'Courier New', monospace;
    font-size: 11px;
    color: var(--dev-text);
    min-width: 150px;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.stat-item {
    margin-bottom: 4px;
    padding: 2px 0;
}

.stat-item:last-child {
    margin-bottom: 0;
}

.stat-label {
    color: var(--dev-label);
    font-weight: bold;
}

.stat-value {
    color: var(--dev-text);
    text-align: right;
}

/* Debug Overlay */
.debug-info {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    font-size: 6px;
    line-height: 1;
    z-index: 100;
    border-radius: 2px;
    padding: 1px;
}

.debug-info .position {
    color: #000;
    font-size: 7px;
}

.debug-info .distance {
    color: black;
    font-size: 7px;
}

.debug-info .paths {
    color: black;
    font-size: 9px;
    text-align: center;
}

.debug-info .human-path {
    color: blue;
}

.debug-info .ai-path {
    color: red;
}

/* Mobile size adjustments */
@media (max-width: 768px) {
    :root {
        --mobile-scale: 0.8;
        --cell-size: calc(32px * var(--mobile-scale));
        --fence-width: calc(16px * var(--mobile-scale));
        --board-size: calc(550px * var(--mobile-scale));
        --border-radius: calc(8px * var(--mobile-scale));
        --border-radius-small: calc(4px * var(--mobile-scale));
        --border-radius-large: calc(12px * var(--mobile-scale));
    }

    body {
        padding: 10px;
    }

    .simple-container {
        padding: 15px;
        gap: 15px;
    }

    .game-area {
        flex-direction: column;
        padding: 15px;
        gap: 15px;
    }

    .board-container {
        padding: 30px;
        order: 1;
    }

    .sidebar {
        width: 100%;
        order: 2;
        padding: 15px;
        gap: 15px;
    }

    .cell {
        font-size: calc(12px * var(--mobile-scale));
    }

    .direction-controls {
        gap: calc(8px * var(--mobile-scale));
    }

    .direction-btn {
        padding: calc(8px * var(--mobile-scale));
        font-size: calc(14px * var(--mobile-scale));
    }

    .action-btn {
        padding: calc(10px * var(--mobile-scale)) calc(15px * var(--mobile-scale));
        font-size: calc(14px * var(--mobile-scale));
    }

    .panel {
        padding: calc(12px * var(--mobile-scale));
    }

    .debug-info {
        font-size: calc(11px * var(--mobile-scale));
    }

    .debug-info .position {
        font-size: calc(10px * var(--mobile-scale));
    }

    .debug-info .distance {
        font-size: calc(10px * var(--mobile-scale));
    }

    .debug-info .paths {
        font-size: calc(9px * var(--mobile-scale));
    }

    .btn {
        min-height: 44px;
        min-width: 44px;
    }

    .cell {
        touch-action: manipulation;
    }

    .fence-slot {
        touch-action: manipulation;
        min-width: calc(20px * var(--mobile-scale));
        min-height: calc(20px * var(--mobile-scale));
    }

    .cell:active {
        transform: scale(0.95);
    }

    .btn:active {
        transform: scale(0.95);
    }

    .fence-slot:active {
        transform: scale(0.95);
    }

    .board, .cell, .fence-slot, .btn {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }

    .modal-content {
        padding: 20px;
        width: 95%;
    }
}

@media (max-width: 480px) {
    :root {
        --mobile-scale: 0.6;
    }

    .game-area {
        padding: 10px;
        gap: 10px;
    }

    .board-container {
        padding: 25px;
    }

    h3 {
        font-size: calc(16px * var(--mobile-scale));
    }

    .fence-count-display {
        font-size: calc(14px * var(--mobile-scale));
    }

    .score-number {
        font-size: calc(24px * var(--mobile-scale));
    }

    .score-label {
        font-size: calc(14px * var(--mobile-scale));
    }

    .score-separator {
        font-size: calc(20px * var(--mobile-scale));
    }
}

@media (max-width: 360px) {
    :root {
        --mobile-scale: 0.35;
    }

    .game-area {
        padding: 5px;
        gap: 8px;
    }

    .board-container {
        padding: 20px;
    }

    body {
        padding: 5px;
    }
}

@media (max-width: 320px) {
    :root {
        --mobile-scale: 0.3;
    }

    .game-area {
        padding: 3px;
        gap: 5px;
    }

    .board-container {
        padding: 18px;
    }

    body {
        padding: 3px;
    }

    .btn {
        min-height: 36px;
        min-width: 36px;
        font-size: calc(12px * var(--mobile-scale));
    }

    .panel {
        padding: calc(8px * var(--mobile-scale));
    }
}