:root {
    --primary-color: #8B0000;
    --secondary-color: #1A1A1A;
    --text-color: #E0E0E0;
    --accent-color: #aca999;
    --alt-text-color: #E0E0E0;
    --body-font: 'Roboto', sans-serif;
    --header-font: 'Cinzel', serif;
    --background-dark: #0d0d0d;
    --border-color: #333;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--body-font);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    background-color: var(--background-dark);
    overflow-x: hidden;
}

header {
    text-align: center;
    padding: 2rem 0;
    background-color: rgba(0, 0, 0, 0.7);
}

h1, h2, h3 {
    font-family: var(--header-font);
    font-weight: 400;
    font-style: normal;
}

h1 {
    font-size: 4rem;
    margin: 0;
    color: white;
    font-variant: small-caps;
    line-height: 0.8;
}

h2 {
    font-size: 1.5rem;
    margin: 0.5rem 0 0 0;
    color: var(--accent-color);
}

h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.container {
    display: flex;
    height: calc(100vh - 180px); /* Subtract header and footer height */
    gap: 2rem;
    padding: 1rem;
    max-width: 1600px;
    margin: 0 auto;
}

.player-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 0; /* Allow flexbox to shrink properly */
}

.audio-controls {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

#current-chapter-title {
    color: var(--accent-color);
    font-style: italic;
}

.controls-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
}

.control-btn, .control-btn-large {
    background-color: var(--primary-color);
    color: var(--alt-text-color);
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    font-family: var(--body-font);
}

.control-btn-large {
    font-size: 2rem;
    padding: 1rem 2rem;
}

.control-btn:hover, .control-btn-large:hover {
    background-color: #a50000;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.4);
}

.control-btn:active, .control-btn-large:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.progress-container {
    margin: 1.5rem 0;
}

.time-display {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--accent-color);
}

.progress-bar-container {
    position: relative;
    width: 100%;
    height: 30px;
}

.progress-track {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    pointer-events: none;
    z-index: 1;
}

.progress-bar {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 4px;
    pointer-events: none;
    width: 0%;
    z-index: 2;
}

.progress-slider {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100%;
    height: 8px;
    margin: 0;
    padding: 0;
    border: none;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    outline: none;
    cursor: pointer;
    z-index: 3;
}

.progress-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 2px solid white;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.progress-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 2px solid white;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.progress-slider::-webkit-slider-runnable-track {
    background: transparent;
    border: none;
}

.progress-slider::-moz-range-track {
    background: transparent;
    border: none;
}

.additional-controls {
    display: flex;
    justify-content: space-around;
    gap: 2rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 150px;
}

.control-group label {
    font-size: 0.9rem;
    color: var(--accent-color);
}

#volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

#volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border: 2px solid white;
    border-radius: 50%;
    cursor: pointer;
}

#volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border: 2px solid white;
    border-radius: 50%;
    cursor: pointer;
}

#speed-select {
    padding: 0.5rem;
    background-color: var(--background-dark);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--body-font);
    font-size: 1rem;
    cursor: pointer;
}

#speed-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.chapter-list-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.chapter-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.chapter-header h3 {
    margin: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.total-progress {
    color: var(--accent-color);
    font-size: 1rem;
    font-family: var(--body-font);
    white-space: nowrap;
}

.chapter-list {
    flex: 1;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.chapter-item {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background-color: var(--background-dark);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    line-height: 1.5;
}

.chapter-item:hover {
    background-color: #1a1a1a;
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.chapter-item.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.loading {
    text-align: center;
    color: var(--accent-color);
    font-style: italic;
}

.info-panel {
    width: 350px;
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow-y: auto;
}

.info-panel p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

.info-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.info-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: var(--alt-text-color);
    text-decoration: none;
    font-weight: bold;
    text-align: center;
    border-radius: 6px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
    font-variant: small-caps;
}

.info-button:hover {
    background-color: #a50000;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
}

.small-print {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-style: italic;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background-color: rgba(0, 0, 0, 0.7);
    margin-top: auto;
}

/* Scrollbar styling */
.chapter-list::-webkit-scrollbar,
.info-panel::-webkit-scrollbar {
    width: 8px;
}

.chapter-list::-webkit-scrollbar-track,
.info-panel::-webkit-scrollbar-track {
    background: var(--background-dark);
    border-radius: 4px;
}

.chapter-list::-webkit-scrollbar-thumb,
.info-panel::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.chapter-list::-webkit-scrollbar-thumb:hover,
.info-panel::-webkit-scrollbar-thumb:hover {
    background: #a50000;
}

/* Mobile responsive design */
@media (max-width: 900px) {
    h1 {
        font-size: 3rem;
    }

    .container {
        flex-direction: column;
        height: auto;
        min-height: calc(100vh - 180px);
    }

    .player-section {
        order: 1;
    }

    .info-panel {
        order: 2;
        width: 100%;
        margin-top: 1rem;
    }

    .chapter-list-container {
        min-height: 300px;
    }
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    .audio-controls {
        padding: 1rem;
    }

    .controls-row {
        gap: 0.5rem;
    }

    .control-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .control-btn-large {
        font-size: 1.5rem;
        padding: 0.75rem 1.5rem;
    }

    .additional-controls {
        flex-direction: column;
        gap: 1rem;
    }

    .control-group {
        width: 100%;
    }

    .info-panel {
        padding: 1rem;
    }
}