/* Tetrafall Styles */

:root {
    --tetrafall-board-bg: #090b10; /* Darker board */
    --tetrafall-slot-bg: #05070a; /* Darker slots */
    --tetrafall-border: rgba(255, 255, 255, 0.06);
    --tetrafall-cell-size: 24px; /* INSTÄLLNING - cellSize */
    --tetrafall-panel-bg: rgba(18, 18, 24, 0.7);
    --grid-line-alpha: 0.08; /* INSTÄLLNING - gridLineAlpha */
}

.preview-box {
    background: var(--tetrafall-panel-bg);
    border: 1px solid var(--tetrafall-border);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    backdrop-filter: blur(8px);
}

.preview-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 2px;
    width: 64px;
    height: 64px;
}

/* Board */
.board-container {
    position: relative;
    padding: 8px;
    background: var(--tetrafall-panel-bg);
    border: 1px solid var(--tetrafall-border);
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
}

.board {
    display: grid;
    grid-template-columns: repeat(10, var(--tetrafall-cell-size));
    grid-template-rows: repeat(20, var(--tetrafall-cell-size));
    gap: 2px;
    background: 
        linear-gradient(90deg, rgba(255,255,255,var(--grid-line-alpha)) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,var(--grid-line-alpha)) 1px, transparent 1px),
        var(--tetrafall-board-bg);
    background-size: var(--tetrafall-cell-size) var(--tetrafall-cell-size);
    padding: 4px;
    border-radius: 8px;
    box-shadow: inset 0 4px 12px rgba(0, 0, 0, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.cell {
    width: var(--tetrafall-cell-size);
    height: var(--tetrafall-cell-size);
    background: var(--tetrafall-slot-bg);
    border-radius: 3px;
    position: relative;
}

/* Pieces */
.block {
    position: absolute;
    inset: 1px;
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 
        inset 0 1px 2px rgba(255, 255, 255, 0.25),
        inset 0 -2px 6px rgba(0, 0, 0, 0.3),
        0 2px 6px rgba(0, 0, 0, 0.4);
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
}

.block::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: 5px;
    box-shadow: 0 0 12px currentColor;
    opacity: var(--piece-glow, 0.24); /* INSTÄLLNING - blockGlowStrength */
    z-index: -1;
}

/* Piece Colors - Using slightly more curated, professional colors */
.color-i { color: #4cc9f0; background: linear-gradient(180deg, #4cc9f0, #3ca8c9); }
.color-j { color: #4361ee; background: linear-gradient(180deg, #4361ee, #3649c0); }
.color-l { color: #f72585; background: linear-gradient(180deg, #f72585, #c51e6a); }
.color-o { color: #fee440; background: linear-gradient(180deg, #fee440, #ccb633); }
.color-s { color: #06d6a0; background: linear-gradient(180deg, #06d6a0, #05ab80); }
.color-t { color: #8b6cff; background: linear-gradient(180deg, #8b6cff, #6f53cc); }
.color-z { color: #ff4d4d; background: linear-gradient(180deg, #ff4d4d, #cc3d3d); }

.ghost {
    opacity: 0.24; /* INSTÄLLNING - ghostOpacity */
}

/* Flash effect */
.flash {
    animation: clearFlash 0.26s ease-out;
}

@keyframes clearFlash {
    0% { background: #fff; box-shadow: 0 0 20px #fff; }
    100% { background: var(--tetrafall-slot-bg); }
}


/* INSTÄLLNING - Global Mobile Fallback Fix */
html, body {
    overflow-x: hidden !important;
    max-width: 100vw;
}
@media (max-width: 800px) {
    canvas, .game-canvas, #game-container, #game-stage, #app {
        max-width: 100% !important;
        height: auto;
    }
    .panel, .sidebar, .menu, #ui, #overlay {
        max-width: 100% !important;
        box-sizing: border-box;
    }
}