/* css/style.css */

body {
    font-family: 'DM Serif Text', serif;
    overflow: hidden;
    touch-action: pan-x pan-y;
}

/* 3D Paper Effect (Simplified for Monochrome) */
.paper-viewport {
    perspective: 800px;
    overflow: hidden;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#paper {
    transform-style: preserve-3d;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    background-color: #ffffff;
    border: 4px solid #000000;
    padding: 40px;
    display: flex;
    gap: 20px;
    /* Grid lines */
    background-image: repeating-linear-gradient(transparent, transparent 39px, #000000 39px, #000000 40px);
    background-position: 0 0px;
    will-change: transform;
}

.dark #paper {
    background-color: #000000;
    border: 4px solid #ffffff;
    background-image: repeating-linear-gradient(transparent, transparent 39px, #ffffff 39px, #ffffff 40px);
}

.lajur {
    display: flex;
    flex-direction: column;
    width: 40px;
    position: relative;
    border-left: 2px solid #000000;
    border-right: 2px solid #000000;
}

.dark .lajur {
    border-left: 2px solid #ffffff;
    border-right: 2px solid #ffffff;
}

.cell {
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #000000;
    transition: all 0.2s;
    position: relative;
}

.dark .cell {
    color: #ffffff;
}

/* Indikator Angka Aktif */
.cell.active {
    font-size: 2rem;
    font-style: italic;
    background-color: rgba(0, 0, 0, 0.1);
}

.dark .cell.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Jawaban di tengah */
.answer-marker {
    position: absolute;
    right: -25px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #000000;
    transform: translateY(-20px);
    animation: popIn 0.2s ease-out;
    z-index: 10;
    border: 1px solid #000;
    padding: 2px;
    background: #fff;
}

.dark .answer-marker {
    color: #ffffff;
    border: 1px solid #fff;
    background: #000;
}

.answer-marker.wrong {
    text-decoration: line-through;
    opacity: 0.7;
}

@keyframes popIn {
    0% {
        transform: translateY(-20px) scale(0.5);
        opacity: 0;
    }
    100% {
        transform: translateY(-20px) scale(1);
        opacity: 1;
    }
}

/* Numpad Styling */
.numpad-btn {
    transition: transform 0.05s, box-shadow 0.05s;
    background: #ffffff;
    border: 2px solid #000000;
    color: #000000;
}
.numpad-btn:active {
    transform: scale(0.95);
    background: #000000;
    color: #ffffff;
}

.dark .numpad-btn {
    background: #000000;
    border: 2px solid #ffffff;
    color: #ffffff;
}
.dark .numpad-btn:active {
    transform: scale(0.95);
    background: #ffffff;
    color: #000000;
}

#pindahOverlay {
    transition: opacity 0.3s;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: transparent;
    border-left: 2px solid #000;
}
.dark ::-webkit-scrollbar-track {
    border-left: 2px solid #fff;
}
::-webkit-scrollbar-thumb {
    background: #000000;
}
.dark ::-webkit-scrollbar-thumb {
    background: #ffffff;
}

/* Toast message transitions */
.toast-visible {
    transform: translateY(0);
    opacity: 1;
}
.toast-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

@media print {
    body * {
        visibility: hidden;
    }
    #printArea, #printArea * {
        visibility: visible;
    }
    #printArea {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        color: #000 !important;
        background: #fff !important;
    }
    .print-page {
        page-break-after: always;
        width: 100%;
        margin-bottom: 2rem;
        padding-top: 2rem;
    }
    .print-hide {
        display: none !important;
    }
}