/* 字体按钮统一样式 - 继承语音面板设计风格 */

/* 基础字体按钮样式 - 继承现有设计 */
.font-button,
.font-option-btn {
    background: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 8px 16px;
    margin: 4px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
    font-weight: 500;
    color: #495057;
    position: relative;
    overflow: hidden;
    min-width: 80px;
    text-align: center;
    user-select: none;
    
    /* 与语音按钮保持一致的阴影效果 */
    box-shadow: 0 2px 4px var(--shadow-light);
}

.font-button:hover,
.font-option-btn:hover {
    border-color: #adb5bd;
    box-shadow: 0 4px 8px var(--shadow-strong-light);
    transform: translateY(-1px);
}

.font-button:active,
.font-option-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px var(--shadow-light);
}

/* 状态指示器 - 右上角小圆点 */
.font-button::after,
.font-option-btn::after {
    content: '';
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: transparent;
    transition: all 0.3s ease;
}

/* 1. 加载中状态 */
.font-button.loading,
.font-option-btn.loading {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-color: #2196f3;
    color: #1976d2;
    cursor: wait;
}

.font-button.loading::before,
.font-option-btn.loading::before {
    content: '⟳';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    animation: spin-inline 1s linear infinite;
    font-size: 12px;
    color: #1976d2;
}

/* 确保非loading状态下不显示loading图标 */
.font-button:not(.loading)::before,
.font-option-btn:not(.loading)::before {
    content: '' !important;
    animation: none !important;
}

/* active状态下确保没有loading图标 */
.font-button.active::before,
.font-option-btn.active::before {
    content: '' !important;
    animation: none !important;
}

.font-button.loading::after,
.font-option-btn.loading::after {
    background: #2196f3;
    animation: pulse 1.5s ease-in-out infinite;
}

/* 2. 加载成功且应用成功状态 */
.font-button.success,
.font-option-btn.success {
    background: linear-gradient(135deg, #e8f5e8 0%, #c8e6c9 100%);
    border-color: #4caf50;
    color: #2e7d32;
}

.font-button.success::after,
.font-option-btn.success::after {
    background: #4caf50;
    box-shadow: 0 0 0 2px var(--success-border-light);
}

.font-button.success:hover,
.font-option-btn.success:hover {
    background: linear-gradient(135deg, #c8e6c9 0%, #a5d6a7 100%);
    box-shadow: 0 6px 16px var(--success-border-light);
}

.font-button.success::before,
.font-option-btn.success::before {
    content: '✓';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #2e7d32;
    animation: checkmark 0.6s ease-out;
}

/* 3. 加载失败状态 */
.font-button.load-error,
.font-option-btn.load-error {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    border-color: #f44336;
    color: #c62828;
}

.font-button.load-error::after,
.font-option-btn.load-error::after {
    background: #f44336;
    animation: blink 1s ease-in-out infinite;
}

.font-button.load-error:hover,
.font-option-btn.load-error:hover {
    background: linear-gradient(135deg, #ffcdd2 0%, #ef9a9a 100%);
    box-shadow: 0 6px 16px var(--error-border-light);
}

.font-button.load-error::before,
.font-option-btn.load-error::before {
    content: '⚠';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #c62828;
}

/* 4. 应用失败状态 */
.font-button.apply-error,
.font-option-btn.apply-error {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-color: #ff9800;
    color: #ef6c00;
}

.font-button.apply-error::after,
.font-option-btn.apply-error::after {
    background: #ff9800;
    animation: shake 0.5s ease-in-out;
}

.font-button.apply-error:hover,
.font-option-btn.apply-error:hover {
    background: linear-gradient(135deg, #ffe0b2 0%, #ffcc80 100%);
    box-shadow: 0 6px 16px var(--warning-border-light);
}

.font-button.apply-error::before,
.font-option-btn.apply-error::before {
    content: '!';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #ef6c00;
    font-weight: bold;
}

/* 5. 激活状态（当前选中的字体） */
.font-button.active,
.font-option-btn.active {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-color: #0056b3;
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-border-light);
}

.font-button.active::after,
.font-option-btn.active::after {
    background: #ffffff;
    box-shadow: 0 0 0 2px var(--scrollbar-thumb);
}

.font-button.active:hover,
.font-option-btn.active:hover {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
    box-shadow: 0 6px 16px var(--accent-shadow-light);
}

/* 6. 禁用状态 */
.font-button:disabled,
.font-button.disabled,
.font-option-btn:disabled,
.font-option-btn.disabled {
    background: #f8f9fa;
    border-color: #e9ecef;
    color: #6c757d;
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

.font-button:disabled::after,
.font-button.disabled::after,
.font-option-btn:disabled::after,
.font-option-btn.disabled::after {
    background: #6c757d;
    opacity: 0.5;
}

.font-button:disabled:hover,
.font-button.disabled:hover,
.font-option-btn:disabled:hover,
.font-option-btn.disabled:hover {
    transform: none;
    box-shadow: none;
    background: #f8f9fa;
}

/* 动画定义 */
@keyframes spin-inline {
    from { transform: translateY(-50%) rotate(0deg); }
    to { transform: translateY(-50%) rotate(360deg); }
}



@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

@keyframes checkmark {
    0% { opacity: 0; transform: translateY(-50%) scale(0.5); }
    50% { opacity: 1; transform: translateY(-50%) scale(1.2); }
    100% { opacity: 1; transform: translateY(-50%) scale(1); }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .font-button,
    .font-option-btn {
        min-width: 70px;
        padding: 6px 12px;
        font-size: 13px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .font-button,
    .font-option-btn {
        background: linear-gradient(135deg, #2c2c2c 0%, #1a1a1a 100%) !important;
        border-color: #444 !important;
        color: #e0e0e0 !important;
    }
    
    .font-button:hover,
    .font-option-btn:hover {
        background: linear-gradient(135deg, #3c3c3c 0%, #2c2c2c 100%) !important;
        border-color: #555 !important;
        color: #f0f0f0 !important;
    }
}

/* 确保与现有样式兼容 */
#settings-menu .font-option-btn {
    width: 100% !important;
    margin: 0 !important;
    box-sizing: border-box;
}

/* 移动端优化 */
@media (max-width: 767px) {
    #settings-menu .font-option-btn {
        font-size: 13px;
        padding: 7px 9px;
    }
}