/**
 * IP 签名图组件样式
 * 使用 AeroCore 主题 CSS 变量，自动适配深色模式
 */

.ip-signature-component {
    max-width: 450px;
    margin: 20px auto;
    padding: 20px;
    background: var(--bg-card, #fff);
    border-radius: var(--border-radius, 8px);
    transition: all 0.3s ease;
}

.ip-signature-component.has-border {
    border: 1px solid var(--border-primary, #e5e7eb);
    box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.ip-signature-component:hover {
    box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1));
}

.ip-signature-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--caption-color, #1e293b);
    margin-bottom: 15px;
    text-align: center;
}

.ip-signature-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 250px;
    background: var(--bg-secondary, #f8fafc);
    border-radius: var(--border-radius-sm, 6px);
    overflow: hidden;
}

.ip-signature-image {
    max-width: 100%;
    height: auto;
    display: block;
}

.ip-signature-error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    padding: 20px;
    color: var(--text-secondary, #475569);
}

.ip-signature-error p {
    margin: 5px 0;
}

.ip-signature-error-tips {
    font-size: 12px;
    color: var(--text-tertiary, #64748b);
}

.ip-signature-info {
    margin-top: 15px;
    text-align: center;
}

.ip-signature-tips {
    font-size: 12px;
    color: var(--text-muted, #94a3b8);
    margin: 0;
}

/* 深色模式适配（备用，主要靠 CSS 变量） */
html[data-theme="dark"] .ip-signature-component {
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

html[data-theme="dark"] .ip-signature-image-wrapper {
    background: var(--bg-secondary, #222222);
}

/* 加载动画 */
.ip-signature-image-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid var(--border-primary, #e5e7eb);
    border-top-color: var(--theme-color, #007bff);
    border-radius: 50%;
    animation: ip-sig-spin 0.8s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ip-signature-image-wrapper:not(:has(.ip-signature-image[complete]))::before {
    opacity: 1;
}

@keyframes ip-sig-spin {
    to { transform: rotate(360deg); }
}

/* 响应式 */
@media (max-width: 768px) {
    .ip-signature-component {
        padding: 15px;
        margin: 15px auto;
    }
    
    .ip-signature-title {
        font-size: 16px;
    }
}