@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --background-color: #1a1a1d;
    --primary-text-color: #e0e0e0;
    --secondary-text-color: #9e9e9e;
    --accent-color: #4a90e2;
    --hover-color: #2c2c30;
    --container-background: #212124;
    --disabled-color: #424242;
    --loop-active-color: #e94560;
    --playing-color: #4a90e2;
}

.light-theme {
    --background-color: #f5f5f5;
    --primary-text-color: #212121;
    --secondary-text-color: #757575;
    --accent-color: #1976d2;
    --hover-color: #e0e0e0;
    --container-background: #ffffff;
    --disabled-color: #bdbdbd;
    --loop-active-color: #d32f2f;
    --playing-color: #1976d2;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--primary-text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}

#app-container {
    width: 100%;
    max-width: 1600px;
    background-color: var(--container-background);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    height: calc(100vh - 4rem);
    transition: background-color 0.3s ease;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 10px;
    transition: background-color 0.3s ease;
    min-height: 0; /* Prevent flex container from overflowing */
}

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

.header-buttons {
    display: flex;
    gap: 0.5rem;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-text-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

button {
    background: none;
    border: none;
    color: var(--primary-text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s ease, color 0.3s ease;
}

button:hover {
    background-color: var(--hover-color);
}

button:disabled {
    color: var(--disabled-color);
    cursor: not-allowed;
}

button.active {
    color: var(--accent-color);
}

#loop-toggle-btn.active {
    color: var(--loop-active-color);
}

#video-list-container {
    flex-grow: 1;
    overflow-y: auto;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none;  /* Internet Explorer 10+ */
}

#video-list-container::-webkit-scrollbar {
    display: none; /* Safari and Chrome */
}

#video-list {
    list-style: none;
}

#video-list li {
    padding: 0.8rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#video-list li:hover {
    background-color: var(--hover-color);
}

#video-list li.playing {
    background-color: var(--playing-color);
    color: #fff;
    font-weight: 600;
}

.main-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    height: 100%;
    overflow: hidden;
}

#video-player-container {
    display: flex;
    flex-direction: column;
    min-height: 0; /* Prevent flexbox from growing indefinitely */
}

#video-player {
    width: 100%;
    height: 100%; /* Allow the video to fill the container */
    border-radius: 10px;
    background-color: #000;
    flex-grow: 1;
    min-height: 0; /* Prevent flexbox from growing indefinitely */
}

.player-controls {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 1rem;
    padding: 0.8rem;
    background-color: var(--background-color);
    border-radius: 10px;
    margin-top: 1rem;
    transition: background-color 0.3s ease;
}

.speed-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#playback-speed {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    height: 5px;
    background: var(--secondary-text-color);
    border-radius: 5px;
    outline: none;
    cursor: pointer;
}

#playback-speed::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    cursor: pointer;
    border-radius: 50%;
}

#transcript-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 10px;
    min-height: 0; /* Prevent grid row from expanding */
    transition: background-color 0.3s ease;
}

#transcript {
    flex-grow: 1;
    overflow-y: auto;
    padding-right: 1rem;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none;  /* Internet Explorer 10+ */
}

#transcript::-webkit-scrollbar {
    display: none; /* Safari and Chrome */
}

#transcript p {
    padding: 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
    color: var(--secondary-text-color);
    font-size: 0.95rem;
    line-height: 1.5;
}

#transcript p.active {
    color: var(--primary-text-color);
    font-weight: 600;
}

#transcript p.loop-active {
    background-color: var(--loop-active-color);
    color: #fff;
}

@media (max-width: 1024px) {
    body {
        padding: 0;
    }
    #app-container {
        grid-template-columns: 1fr;
        height: 100vh;
        border-radius: 0;
        padding: 1rem;
    }
    .main-content {
        grid-template-columns: 1fr;
    }
    .sidebar {
        padding: 1rem;
    }
    #transcript-container {
        display: none; /* Hide transcript on smaller screens for simplicity */
    }
}