:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --border-color: #cccccc;
    --container-bg: #f5f5f5;
}

[data-theme="dark"] {
    --bg-color: #000000;
    --text-color: #ffffff;
    --border-color: #444444;
    --container-bg: #1a1a1a;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: Arial, sans-serif;
    touch-action: manipulation;
}

#app-container {
    max-width: 95%;
    width: 55%;
    margin: 2rem auto;
    padding: 2rem;
    text-align: center;
}

h1, h2 {
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.2rem;
    font-weight: normal;
}

a {
    text-decoration: none;
    color: color-mix(in SRGB, var(--text-color), gray);
    font-weight: bolder;
}

#speedReader-input-container {
    background-color: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
}

#speedReader-text-input {
    width: 90%;
    height: 25vh;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    resize: vertical;
    margin-bottom: 1rem;
    line-height: 1.8;
    transition: border 0.3s ease;
}

#speedReader-text-input.drag-over {
    border: 2px dashed var(--text-color);
    background-color: var(--container-bg);
}

.start-btn {
    display: block;
    margin: 0 auto 1rem;
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
    border: none;
    border-radius: 4px;
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.start-btn:hover:not(:disabled) {
    background-color: #45a049;
    transform: translateY(-1px);
}

.start-btn:disabled {
    background-color: #4f0e0e;
    cursor: not-allowed;
    opacity: 0.7;
}

#control-bar {
    display: flex;
    justify-content: center;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.progress-container {
    display: none;
}

.show-ui {
    display: none;
}

.left-controls {
    display: none;
    flex-direction: row;
    gap: 0.8rem;
}

.right-controls {
    display: flex;
    flex-direction: row;
    gap: 0.8rem;
}

.progress-container {
    flex: 1;
    min-width: 150px;
    max-width: 200px;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    cursor: pointer;
    position: relative;
    margin: 0.5rem 0;
    min-height: 8px;
}

.progress-container:hover .progress-bar {
    filter: brightness(1.1);
}

.progress-bar {
    width: 0%;
    height: 100%;
    background-color: #4CAF50;
    transition: width 0.3s ease, background-color 0.3s ease;
    position: absolute;
    left: 0;
    top: 0;
    min-height: 4px;
}

.control-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    min-width: 40px;
    height: 40px;
    position: relative;
}

.control-btn:hover {
    opacity: 0.8;
    transform: translateY(-1px);
}

.control-btn svg {
    width: 20px;
    height: 20px;
}

.tooltip-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

.tooltip {
    position: fixed;
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    opacity: 0;
    transition: opacity 0.2s ease;
    transform: translateX(-50%);
}

.tooltip.show {
    opacity: 1;
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--bg-color);
}

/* Position tooltips based on button position */
.control-btn .tooltip {
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0.5rem;
}

/* Position tooltip for progress container */
#progress-container .tooltip {
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0.5rem;
}

/* Adjust tooltip position for buttons at the edges */
.left-controls .control-btn:first-child .tooltip,
.right-controls .control-btn:last-child .tooltip {
    left: 0;
    transform: translateX(0);
}

.left-controls .control-btn:first-child .tooltip::after,
.right-controls .control-btn:last-child .tooltip::after {
    left: 1rem;
}

@media (max-width: 768px) {
    .tooltip {
        display: none; /* Hide tooltips on mobile */
    }
}

#speedReader-content {
    display: none;
    height: 30vh;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background-color: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

#speedReader-text {
    margin: 0;
    font-size: 2rem;
    line-height: 1.8;
}

@media (max-width: 768px) {
    #app-container {
        width: 95%;
        padding: 1rem;
    }

    .control-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
        min-width: 35px;
        height: 35px;
    }

    .control-btn svg {
        width: 16px;
        height: 16px;
    }

    /* Create three rows for mobile */
    #control-bar {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        user-select: none;
    }

    /* First row: left side buttons */
    #control-bar .left-controls {
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
    }

    /* Second row: progress bar */
    #control-bar .progress-container {
        width: 70%;
        max-width: none;
        margin: 0.5rem 0;
        height: 8px !important;
        min-height: 8px !important;
    }

    /* Third row: right side buttons */
    #control-bar .right-controls {
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
    }
}

/* Theme toggle icon styles */
#theme-toggle .sun-part {
    opacity: 1;
    stroke: var(--text-color);
    fill: none;
}

#theme-toggle .moon-part {
    opacity: 0;
    stroke: var(--text-color);
    fill: var(--text-color);
}

[data-theme="dark"] #theme-toggle .sun-part {
    opacity: 0;
}

[data-theme="dark"] #theme-toggle .moon-part {
    opacity: 1;
}

#theme-toggle:hover .sun-part {
    opacity: 0.1;
}
#theme-toggle:hover .moon-part {
    opacity: 0.7;
}

[data-theme="dark"] #theme-toggle:hover .sun-part {
    opacity: 0.7;
}
[data-theme="dark"] #theme-toggle:hover .moon-part {
    opacity: 0.1;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--bg-color);
    border-radius: 8px;
    padding: 1.5rem;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    color: var(--text-color);
}

.modal-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-actions .control-btn {
    padding: 0.3rem;
    min-width: 32px;
    height: 32px;
}

.modal-actions .control-btn svg {
    width: 16px;
    height: 16px;
}

.modal-actions .close-btn {
    margin-left: 0.5rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.close-btn:hover {
    background-color: var(--border-color);
}

.settings-group {
    margin-bottom: 1.5rem;
}

.settings-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: bold;
}

.settings-group input[type="range"] {
    width: 100%;
    margin-bottom: 0.5rem;
}

.settings-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

.settings-group span {
    display: block;
    color: var(--text-color);
    font-size: 0.9rem;
}

/* Color themes */
[data-color-theme="sepia"] {
    --bg-color: #f4ecd8;
    --text-color: #5b4636;
    --border-color: #a39081;
    --container-bg: #eae0c9;
}

[data-color-theme="high-contrast"] {
    --bg-color: #000000;
    --text-color: #ffffff;
    --border-color: #ffffff;
    --container-bg: #1a1a1a;
}

[data-color-theme="blue-light"] {
    --bg-color: #f0f4f8;
    --text-color: #2c5282;
    --border-color: #90cdf4;
    --container-bg: #ebf8ff;
}

[data-color-theme="mint"] {
    --bg-color: #f0fff4;
    --text-color: #276749;
    --border-color: #9ae6b4;
    --container-bg: #e6ffed;
}

[data-color-theme="sunset"] {
    --bg-color: #feebc8;
    --text-color: #c05621;
    --border-color: #fbd38d;
    --container-bg: #fffaf0;
}

[data-color-theme="night-owl"] {
    --bg-color: #1a1c2c;
    --text-color: #c792ea;
    --border-color: #5f7e97;
    --container-bg: #292d3e;
}

[data-color-theme="coffee"] {
    --bg-color: #32292f;
    --text-color: #e6d5ac;
    --border-color: #9b6b43;
    --container-bg: #2d2327;
}

[data-color-theme="ocean"] {
    --bg-color: #e3f2fd;
    --text-color: #0d47a1;
    --border-color: #64b5f6;
    --container-bg: #bbdefb;
}

[data-color-theme="forest"] {
    --bg-color: #2f3e46;
    --text-color: #cad2c5;
    --border-color: #84a98c;
    --container-bg: #354f52;
}

[data-color-theme="rose"] {
    --bg-color: #fff5f7;
    --text-color: #b83280;
    --border-color: #fbb6ce;
    --container-bg: #fed7e2;
}

[data-color-theme="lavender"] {
    --bg-color: #faf5ff;
    --text-color: #6b46c1;
    --border-color: #d6bcfa;
    --container-bg: #e9d8fd;
}

[data-color-theme="terminal"] {
    --bg-color: #0a0e14;
    --text-color: #98c379;
    --border-color: #4d5566;
    --container-bg: #1f2430;
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    .modal-content {
        width: 95%;
        margin: 1rem;
        padding: 1rem;
    }
}

.context-menu {
    display: none;
    position: fixed;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    min-width: 150px;
    max-width: 90vw;
    -webkit-tap-highlight-color: transparent;
}

.context-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.context-menu li {
    padding: 12px 16px;
    cursor: pointer;
    color: var(--text-color);
    transition: background-color 0.2s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-tap-highlight-color: transparent;
}

.context-menu li:hover {
    background-color: var(--container-bg);
}

.context-menu.show {
    display: block;
}

@media (max-width: 768px) {
    .context-menu {
        padding: 4px 0;
    }

    .context-menu li {
        padding: 16px 20px;
        font-size: 1.1rem;
    }
}

/* History list styles */
.history-list {
    max-height: fit-content;
    overflow-y: auto;
}

.history-item {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 0.2rem;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--bg-color);
}

.history-item:hover {
    background-color: var(--container-bg);
    transform: translateY(-1px);
}

.history-item-header {
    display: flex;
    align-items: left;
    margin-bottom: 0.5rem;
}

.history-item .preview {
    margin: 0.5rem 0;
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.history-item .index {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.6;
    margin-right: 0.5rem;
}

.history-item .timestamp {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.6;
}

.history-item .word-count {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.6;
    margin-left: 1rem;
}

.history-item .metadata {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
}

/* Chapter selection styles */
.chapter-list {
    max-height: 60vh;
    overflow-y: auto;
}

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

.chapter-item.selected {
    border-color: var(--progress-color, #4CAF50);
    background-color: var(--container-bg);
    box-shadow: 0 0 0 2px var(--progress-color, #4CAF50);
}

.chapter-item:hover {
    background-color: var(--container-bg);
    transform: translateY(-1px);
}

.chapter-item .title {
    font-weight: bold;
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.chapter-item .progress {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.6;
}

.chapter-item .progress-bar {
    height: 4px;
    background-color: var(--border-color);
    border-radius: 2px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.chapter-item .progress-bar-fill {
    height: 100%;
    background-color: var(--progress-color, #4CAF50);
    transition: width 0.3s ease;
}

.custom-select {
    position: relative;
    width: 100%;
    text-align: left;
}

.select-selected {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: 0.2rem;
}

.select-options {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 4px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    text-align: left;
}

.select-options.show {
    display: block;
}

.select-option {
    padding: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.select-option:hover {
    background-color: var(--container-bg);
}

.arrow-down {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-left: 0.5rem;
    color: color-mix(in SRGB, var(--text-color), black) !important;
}