.reader-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

.reader-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
}

.reader-header h1 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.reader-meta {
    color: #666;
    font-size: 0.9rem;
}

.reader-content {
    line-height: 1.8;
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 2rem;
}

.reader-content p {
    margin-bottom: 1.5rem;
    text-indent: 2em;
}

.reader-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 2rem 0;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.reader-nav {
    display: flex;
    gap: 1rem;
}

.btn-reader {
    padding: 0.8rem 1.5rem;
    border: 2px solid #667eea;
    background: white;
    color: #667eea;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-reader:hover {
    background: #667eea;
    color: white;
}

.btn-reader:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.reader-settings {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.setting-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.setting-group label {
    font-size: 0.9rem;
    color: #666;
}

.setting-group select {
    padding: 0.4rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.reader-footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid #e9ecef;
}

.reader-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.reader-info {
    color: #666;
    font-size: 0.9rem;
}

/* 阅读模式样式 */
.reader-mode {
    background: #f5f5f5;
    min-height: 100vh;
}

.reader-mode .reader-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* 夜间模式样式 */
.night-mode {
    background: #1a1a1a;
    color: #e8e8e8;
}

.night-mode .reader-content {
    background: #2a2a2a;
    color: #e8e8e8;
    border: 1px solid #404040;
}

.night-mode .reader-header {
    border-color: #404040;
}

.night-mode .reader-header h1 {
    color: #ffffff;
}

.night-mode .reader-meta {
    color: #b0b0b0;
}

.night-mode .reader-footer {
    border-color: #404040;
}

.night-mode .btn-reader {
    background: #3a3a3a;
    color: #e8e8e8;
    border-color: #667eea;
}

.night-mode .btn-reader:hover {
    background: #667eea;
    color: #ffffff;
}

.night-mode .reader-controls {
    background: #2a2a2a;
    border: 1px solid #404040;
}

.night-mode .setting-group label {
    color: #b0b0b0;
}

.night-mode .setting-group select {
    background: #3a3a3a;
    color: #e8e8e8;
    border-color: #555555;
}

.night-mode .reader-info {
    color: #b0b0b0;
}

/* 层级导航样式 */
.breadcrumb-nav {
    background: #f8fafc;
    padding: 1rem 0;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 2rem;
}

.breadcrumb-nav .container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.breadcrumb-nav a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb-nav a:hover {
    color: #5a67d8;
    text-decoration: underline;
}

.breadcrumb-nav .separator {
    color: #a0aec0;
}

.breadcrumb-nav .current {
    color: #4a5568;
    font-weight: 500;
}

/* 夜间模式层级导航 */
.night-mode .breadcrumb-nav {
    background: #2a2a2a;
    border-color: #404040;
}

.night-mode .breadcrumb-nav a {
    color: #93c5fd;
}

.night-mode .breadcrumb-nav a:hover {
    color: #60a5fa;
}

.night-mode .breadcrumb-nav .separator {
    color: #6b7280;
}

.night-mode .breadcrumb-nav .current {
    color: #e5e7eb;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .reader-container {
        padding: 1rem;
    }

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

    .reader-nav {
        order: 2;
    }

    .reader-settings {
        order: 1;
        justify-content: center;
    }

    .reader-header h1 {
        font-size: 1.5rem;
    }

    .reader-content {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .reader-nav {
        flex-direction: column;
    }

    .reader-settings {
        flex-direction: column;
    }

    .reader-actions {
        flex-direction: column;
    }
}