:root {
    --bg-color: #e8e8e8;
    --text-color: #1a1a1a;
    --heading-color: #000000;
    --card-bg: #ffffff;
    --card-border: #1a1a1a;
    --tape-yellow: #F9CC0F;
    --tape-black: #1a1a1a;
    --muted: #666666;
    --link: #0066cc;
    --tape-thickness: 4px;
    --card-tape-thickness: 4px;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Playpen Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Visually hidden but accessible label helper */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Skip link for keyboard users */
.skip-link {
    position: absolute;
    left: 8px;
    top: 8px;
    transform: translateY(-150%);
    background: #111827;
    color: #ffffff;
    padding: 8px 12px;
    border-radius: 6px;
    z-index: 1000;
    transition: transform 150ms ease;
}

.skip-link:focus {
    transform: translateY(0);
    outline: 2px solid var(--tape-yellow);
    outline-offset: 2px;
}

/* Main page container */
.page-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

/* Construction tape border container */
.tape-container {
    position: relative;
    background: var(--card-bg);
    padding: calc(var(--tape-thickness) + 2rem) calc(var(--tape-thickness) + 2.5rem);
    max-width: 800px;
    width: 100%;
}

/* Construction tape borders - main container */
.tape-border {
    position: absolute;
    background-image: url('/img/construction_tape.svg');
    background-repeat: repeat;
    z-index: 10;
}

.tape-border.top,
.tape-border.bottom {
    left: 0;
    right: 0;
    height: var(--tape-thickness);
    background-size: auto var(--tape-thickness);
    background-repeat: repeat-x;
}

.tape-border.top {
    top: 0;
}

.tape-border.bottom {
    bottom: 0;
    transform: scaleY(-1);
}

.tape-border.left,
.tape-border.right {
    top: 0;
    bottom: 0;
    width: var(--tape-thickness);
    background-size: var(--tape-thickness) auto;
    background-repeat: repeat-y;
}

.tape-border.left {
    left: 0;
    background-image: linear-gradient(
        -45deg,
        var(--tape-yellow) 25%,
        var(--tape-black) 25%,
        var(--tape-black) 50%,
        var(--tape-yellow) 50%,
        var(--tape-yellow) 75%,
        var(--tape-black) 75%
    );
    background-size: 6px 6px;
}

.tape-border.right {
    right: 0;
    background-image: linear-gradient(
        -45deg,
        var(--tape-yellow) 25%,
        var(--tape-black) 25%,
        var(--tape-black) 50%,
        var(--tape-yellow) 50%,
        var(--tape-yellow) 75%,
        var(--tape-black) 75%
    );
    background-size: 6px 6px;
}

/* Main content area inside tape */
.content-area {
    text-align: center;
    padding: 1.5rem 0;
}

.content-area h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--heading-color);
    margin: 0 0 0.25rem 0;
}

/* Eyes emoji decoration */
.eyes {
    font-size: 1.5rem;
    margin-bottom: 3.5rem;
    line-height: 1;
}

/* Card with tape borders */
a.game-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    padding: calc(var(--card-tape-thickness) + 1rem) calc(var(--card-tape-thickness) + 1.5rem) calc(var(--card-tape-thickness) + 0.5rem);
    text-align: center;
    position: relative;
    min-width: 130px;
    text-decoration: none;
    color: var(--heading-color);
    transition: transform 150ms ease, box-shadow 150ms ease;
}

a.game-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Card tape borders */
.card-tape {
    position: absolute;
    z-index: 5;
}

.card-tape.top,
.card-tape.bottom {
    left: 0;
    right: 0;
    height: var(--card-tape-thickness);
    background-image: linear-gradient(
        -45deg,
        var(--tape-yellow) 25%,
        var(--tape-black) 25%,
        var(--tape-black) 50%,
        var(--tape-yellow) 50%,
        var(--tape-yellow) 75%,
        var(--tape-black) 75%
    );
    background-size: 6px 6px;
}

.card-tape.top {
    top: 0;
}

.card-tape.bottom {
    bottom: 0;
}

.card-tape.left,
.card-tape.right {
    top: 0;
    bottom: 0;
    width: var(--card-tape-thickness);
    background-image: linear-gradient(
        -45deg,
        var(--tape-yellow) 25%,
        var(--tape-black) 25%,
        var(--tape-black) 50%,
        var(--tape-yellow) 50%,
        var(--tape-yellow) 75%,
        var(--tape-black) 75%
    );
    background-size: 6px 6px;
}

.card-tape.left {
    left: 0;
}

.card-tape.right {
    right: 0;
}

.game-card .card-icon {
    font-size: 2.5rem;
    color: var(--heading-color);
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.game-card .card-label {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--heading-color);
    position: relative;
    z-index: 1;
}

/* Card grid layout */
.card-grid {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

/* Simple footer */
.simple-footer {
    text-align: center;
    padding: 2rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.simple-footer a {
    color: inherit;
    text-decoration: none;
    transition: color 150ms ease;
}

.simple-footer a:hover {
    color: #999999;
}

/* Global focus-visible outlines for keyboard accessibility */
:where(a, button, input, select, textarea, [role="button"]):focus-visible {
    outline: 2px solid var(--tape-yellow);
    outline-offset: 2px;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .tape-container {
        padding: calc(var(--tape-thickness) + 1.5rem) calc(var(--tape-thickness) + 1rem);
    }
    
    .content-area h1 {
        font-size: 1.5rem;
    }
    
    .eyes {
        margin-bottom: 2rem;
    }
    
    .card-grid {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
    
    a.game-card {
        flex-direction: row;
        justify-content: flex-start;
        gap: 1rem;
        padding: calc(var(--card-tape-thickness) + 0.75rem) calc(var(--card-tape-thickness) + 1.25rem);
        width: 100%;
    }
    
    .game-card .card-icon {
        font-size: 1.75rem;
        margin-bottom: 0;
    }
    
    .game-card .card-label {
        font-size: 1rem;
    }
}