@charset "utf-8";

/* ==========================================================================
   Base Styles
   ========================================================================== */
html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #020208;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.wrapper {
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.wrapper.show {
    opacity: 1;
}

.kv {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.canvasarea {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* ==========================================================================
   Backend Switcher (Top Right)
   ========================================================================== */
.backend-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    background: rgba(18, 24, 38, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 4px;
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    gap: 4px;
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.backend-btn {
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.65);
    padding: 8px 18px;
    border-radius: 22px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

.backend-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
}

.backend-btn.active {
    background: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 114, 255, 0.45);
}

/* ==========================================================================
   Slider Container (Bottom Center)
   ========================================================================== */
.slider-container {
    position: fixed;
    bottom: 28px;
    left: auto;
    right: 1em;
    z-index: 1000;
    background: rgba(18, 24, 38, 0.4);

    padding: 14px 22px;
    border-radius: 20px;

    width: min(340px, 85vw);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    /*pointer-events: none;
     コンテナ全体・ラベル・余白はタッチ透過 */
}

@media (max-width: 768px) {}

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

    margin-bottom: -0.25rem;
}

.slider-label {
    color: rgba(255, 255, 255, 0.65);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-size: 11px;
}

.slider-value {
    color: #00d2ff;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.5px;
}

/* Custom Range Input */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    transition: background 0.2s;
    pointer-events: auto;
    /* スライダー（ボタン・バー）のみタッチ・操作可能 */
    touch-action: none;
    /* スマホ操作時の画面スクロール誤爆を防止 */
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #00d2ff;
    cursor: pointer;
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.65);
    transition: transform 0.15s, background 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    background: #5ce1e6;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: #00d2ff;
    cursor: pointer;
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.65);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .slider-container {
        width: 55vw;
        left: auto;
        right: 0.35rem;
        padding: 0.5rem 1rem 1rem;
        ;

        background: rgba(18, 24, 38, 0.2);
        bottom: 1rem;
    }

    .backend-btn {
        font-size: 1rem !important;
        padding: 0.5rem 0.9rem 0.4rem;
    }

    .slider-label {
        font-size: 1rem;
    }

    .slider-value {
        font-size: 1rem;
    }

    .tracebox,
    .traceBox {
        font-size: 1rem !important;
    }

    .backend-switcher {
        top: 0.5rem;
        right: 0.25rem;
    }

    #countSlider {
        height: 0.25rem;
        background: rgba(255, 255, 255, 0.3);
    }

    #countSlider {
        --sliderSize: 1.5rem;
    }


    #countSlider::-webkit-slider-thumb {
        width: var(--sliderSize);
        height: var(--sliderSize);
    }

    #countSlider::-moz-range-thumb {
        width: var(--sliderSize);
        height: var(--sliderSize);
    }
}