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

:root {
    --bg-color: #1a1a2e;
    --text-color: #eaeaea;
    --accent-color: #e94560;
    --secondary-bg: #16213e;
    --border-color: #0f3460;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    line-height: 1.6;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hidden {
    display: none !important;
}

#setup-panel {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    width: 100%;
}

h1 {
    font-size: 2.5rem;
    font-weight: 300;
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.input-section {
    margin-bottom: 30px;
}

#text-input {
    width: 100%;
    height: 200px;
    padding: 15px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 16px;
    resize: vertical;
    transition: border-color 0.3s;
}

#text-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.file-actions {
    margin-top: 15px;
    text-align: center;
}

.btn-file {
    display: inline-block;
    padding: 10px 20px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

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

#file-input {
    display: none;
}

.settings-section {
    background: var(--secondary-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
}

.setting-group {
    margin-bottom: 25px;
}

.setting-group:last-child {
    margin-bottom: 0;
}

.setting-group label {
    display: block;
    margin-bottom: 10px;
    font-size: 14px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mode-selector {
    display: flex;
    gap: 10px;
}

.mode-btn {
    flex: 1;
    padding: 12px 20px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.mode-btn:hover {
    border-color: var(--accent-color);
}

.mode-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

#speed-slider,
#reader-speed {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-color);
    border-radius: 3px;
    outline: none;
}

#speed-slider::-webkit-slider-thumb,
#reader-speed::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
}

#speed-slider::-moz-range-thumb,
#reader-speed::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.colors {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.colors label {
    margin-bottom: 0;
}

input[type="color"] {
    width: 50px;
    height: 35px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: none;
}

.btn-primary {
    width: 100%;
    padding: 15px 30px;
    background: var(--accent-color);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.3s;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.btn-primary:hover {
    opacity: 0.9;
}

#reader-panel {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.reader-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.reader-controls.bottom {
    margin-top: auto;
    margin-bottom: 0;
}

.control-btn {
    padding: 10px 25px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.control-btn:hover {
    border-color: var(--accent-color);
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding: 0 20px;
}

#progress-slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--secondary-bg);
    border-radius: 3px;
    outline: none;
}

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

#progress-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

#progress-text {
    font-size: 14px;
    color: #888;
    min-width: 80px;
    text-align: right;
}

#display-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

#word-display {
    font-size: 3rem;
    font-weight: 300;
    text-align: center;
    line-height: 1.4;
    max-width: 90%;
}

#word-display.rsvp-mode {
    font-size: 4rem;
    font-weight: 400;
    font-family: 'Courier New', 'Consolas', 'Monaco', 'Microsoft YaHei', monospace;
    position: relative;
    width: 100%;
    max-width: 800px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#word-display.rsvp-mode .rsvp-word {
    position: relative;
    display: inline-block;
    white-space: nowrap;
}

#word-display.rsvp-mode .before,
#word-display.rsvp-mode .after,
#word-display.rsvp-mode .orp {
    display: inline-block;
}

#word-display.rsvp-mode .orp {
    color: var(--accent-color);
}

#word-display.rsvp-mode .before {
    text-align: right;
}

#word-display.rsvp-mode .after {
    text-align: left;
}

#word-display.word-mode {
    font-size: 1.5rem;
    max-width: 900px;
    width: 100%;
    text-align: left;
    line-height: 1.8;
    max-height: 60vh;
    overflow-y: auto;
    padding: 20px;
    overflow-wrap: anywhere;
    word-break: normal;
    white-space: pre-wrap;
    hyphens: auto;
}

.speed-control {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--secondary-bg);
    padding: 15px 25px;
    border-radius: 8px;
}

.speed-control label {
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.speed-control input {
    width: 200px;
}

#reader-speed-value {
    min-width: 50px;
    text-align: right;
    font-size: 14px;
}

@media (max-width: 600px) {
    h1 {
        font-size: 1.8rem;
    }

    #word-display {
        font-size: 2rem;
    }

    #word-display.rsvp-mode {
        font-size: 2.5rem;
    }

    #word-display.word-mode {
        font-size: 1.3rem;
    }

    .mode-selector {
        flex-direction: column;
    }

    .speed-control {
        flex-direction: column;
        gap: 10px;
    }

    .speed-control input {
        width: 100%;
    }
}