#drop_area {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 80vh;
    margin: 20px auto;
    border: 2px dashed #ccc;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.2em;
    line-height: 200px;
    text-align: center;
}

#drop_area:hover,
#drop_area.solid {
    border-style: solid;
}

.audio-player__container {
    display: flex;
    margin: auto;
}

#audioPlayer {
    margin: 20px auto;
}

.path-animation-1 {
    animation: dash-1 100s linear infinite;
    stroke-dasharray: 5;
}

.path-animation-2 {
    animation: dash-2 80s ease-in-out infinite;
    stroke-dasharray: 2;
}

.path-animation-3 {
    animation: dash-3 60s ease infinite;
    stroke-dasharray: 13;
}

@keyframes dash-1 {
    to {
        stroke-dashoffset: 1000;
    }
}

@keyframes dash-2 {
    to {
        stroke-dashoffset: 1500;
    }
}

@keyframes dash-3 {
    to {
        stroke-dashoffset: 800;
    }
}

.svg-drag-select-area-overlay {
    border: 1px dotted gray;
    background-color: rgba(255, 255, 255, 0.4);
}

[data-selected] {
    fill: yellow;
    stroke: blue;
}

.spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    z-index: 1050;
    width: 40px;
    height: 40px;
    border: 6px solid #f3f3f3;
    border-top: 6px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.feature-progress-status {
    position: fixed;
    top: calc(50% + 44px);
    left: 50%;
    z-index: 1060;
    box-sizing: border-box;
    width: min(420px, calc(100vw - 32px));
    padding: 9px 12px;
    border: 1px solid #b9d4eb;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
    color: #23527a;
    font-size: 0.88rem;
    line-height: 1.25;
    transform: translateX(-50%);
}

.feature-progress-status.app-hidden {
    display: none;
}

.feature-progress-status__spinner {
    flex: 0 0 auto;
    width: 14px;
    height: 14px;
    border: 2px solid #d8e8f6;
    border-top-color: #3f7fb5;
    border-radius: 50%;
    animation: feature-progress-spin 0.9s linear infinite;
}

@keyframes feature-progress-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.zoom-animation {
    animation: zoom 0.3s ease-in-out;
    transform-origin: center;
}

@keyframes zoom {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

.toggle-button {
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
}

.toggle-button img {
    display: block;
}

#playStopButton img:hover {
    transform: scale(1.1);
    transition: transform 0.2s ease;
}

.tooltip {
    position: absolute;
    z-index: 10;
    padding: 5px 10px;
    border-radius: 5px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 12px;
    pointer-events: none;
    white-space: nowrap;
}