@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;900&family=Noto+Sans+JP:wght@600;700&family=Noto+Sans+KR:wght@600;700&family=Noto+Sans+SC:wght@600;700&family=Noto+Sans+TC:wght@600;700&display=swap');

:root {
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #f8fafc;
}

/* === Card Interactions === */
.screen-card {
    transition: transform 0.3s var(--ease-smooth), box-shadow 0.3s var(--ease-smooth);
    opacity: 0;
    animation: fadeInUp 0.5s var(--ease-out-back) forwards;
}

.screen-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    z-index: 10;
}

/* === Drop Zone === */
.drop-zone {
    border: 2px dashed #cbd5e1;
    transition: all 0.2s var(--ease-smooth);
    background-image: repeating-linear-gradient(45deg, #f8fafc 0, #f8fafc 10px, #f1f5f9 10px, #f1f5f9 20px);
}

.drop-zone:hover {
    border-color: #6366f1;
    background-color: #eef2ff;
    background-image: none;
    transform: scale(1.02);
}

.drop-zone.uploaded {
    border-color: #10b981;
    background-color: #ecfdf5;
    background-image: none;
}

/* === Custom Range Inputs === */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 14px;
    width: 14px;
    border-radius: 50%;
    background: #4f46e5;
    cursor: pointer;
    margin-top: -5px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform 0.1s;
}

input[type=range]::-webkit-slider-thumb:hover {
    transform: scale(1.3);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: #e2e8f0;
    border-radius: 2px;
    transition: background 0.2s;
}

input[type=range]:hover::-webkit-slider-runnable-track {
    background: #cbd5e1;
}

/* === Buttons & Swatches === */
.swatch-btn {
    transition: transform 0.2s var(--ease-out-back);
}

.swatch-btn:hover {
    transform: scale(1.2);
}

.swatch-btn.active {
    outline: 2px solid #4f46e5;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px white inset;
    transform: scale(1.25);
}

.device-btn {
    transition: all 0.2s var(--ease-smooth);
}

.device-btn.active {
    background-color: #4f46e5;
    color: white;
    border-color: #4f46e5;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.3);
}

.device-btn:not(.active):hover {
    background-color: #e0e7ff;
    color: #4338ca;
}

.tab-btn {
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.tab-btn.active {
    background-color: #4f46e5;
    color: white;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.tab-btn:not(.active):hover {
    background-color: #e2e8f0;
    color: #1e293b;
}

.action-btn {
    transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* === Languages === */
.lang-row {
    transition: all 0.2s var(--ease-smooth);
}

.lang-row:hover {
    background-color: #f8fafc;
    transform: translateX(2px);
}

.lang-row.enabled {
    background-color: #f0fdf4;
    border-color: #86efac;
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse-subtle {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}