/**
 * layout.css - 证件照工具特定布局样式
 * 基于 base.css 和 components.css，添加工具特定的布局、上传区、预览区、步骤条等
 */

/* ===== 主题色覆盖（证件照工具用绿色主题） ===== */
:root {
    --tool-primary: #07c160;
    --tool-primary-dark: #06ad56;
    --tool-primary-light: rgba(7, 193, 96, 0.1);
    --tool-secondary: #10ad70;
}

/* ===== 工具容器 ===== */
.tool-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

/* ===== 操作步骤条 ===== */
.tool-steps {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
    padding: 14px 20px;
    background: var(--tool-bg-secondary);
    border-radius: var(--tool-radius);
}

.tool-step {
    text-align: center;
    font-size: 13px;
    color: var(--tool-text-secondary);
}

.tool-step__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    line-height: 1;
    background: var(--tool-primary);
    color: #fff;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}

/* ===== 左右两栏布局 ===== */
.idphoto-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 20px;
    align-items: start;
}

/* ===== 上传区域 ===== */
.upload-area {
    border: 2px dashed var(--tool-border);
    border-radius: var(--tool-radius);
    padding: 28px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--tool-transition);
    background: var(--tool-bg-secondary);
}

.upload-area:hover,
.upload-area.is-dragover {
    border-color: var(--tool-primary);
    background: var(--tool-primary-light);
}

.upload-area__icon {
    font-size: 36px;
    margin-bottom: 8px;
}

.upload-area__text {
    font-size: 14px;
    color: var(--tool-text-secondary);
    font-weight: 500;
}

.upload-area__hint {
    font-size: 12px;
    color: var(--tool-text-muted);
    margin-top: 6px;
}

/* ===== 预览区域 ===== */
.preview-area {
    text-align: center;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-placeholder {
    color: var(--tool-text-muted);
    font-size: 14px;
    padding: 40px 20px;
}

.preview-area img {
    max-width: 100%;
    max-height: 600px;
    border-radius: var(--tool-radius-sm);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: opacity 0.3s;
}

.preview-area img.is-loading {
    opacity: 0.5;
}

.preview-meta {
    margin-top: 12px;
    font-size: 12px;
    color: var(--tool-text-muted);
    text-align: center;
}

/* ===== 加载遮罩 ===== */
.loading-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.loading-box {
    background: #fff;
    padding: 30px 40px;
    border-radius: var(--tool-radius);
    box-shadow: var(--tool-shadow-lg);
    text-align: center;
}

/* ===== 排版信息框 ===== */
#layoutInfo {
    font-size: 13px;
    line-height: 1.8;
}

#layoutInfo strong {
    color: var(--tool-primary-dark);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .idphoto-layout {
        grid-template-columns: 1fr;
    }

    .tool-steps {
        flex-wrap: wrap;
        gap: 10px;
    }

    .tool-step {
        flex: 1 1 40%;
    }

    .tool-container {
        padding: 12px;
    }
}

@media (max-width: 480px) {
    .tool-step {
        flex: 1 1 100%;
    }
}