/* ============================================================
   工具页面公共样式（用于 /image/、/pdf/、/video/ 等所有工具页）
   在 common.css 之后引入
   ============================================================ */

/* ---- 面包屑 ---- */
.breadcrumb {
    padding: 16px 0 8px;
    font-size: 14px;
    color: #94a3b8;
}
.breadcrumb a {
    color: #2563eb;
}
.breadcrumb a:hover {
    text-decoration: underline;
}
.breadcrumb .sep {
    margin: 0 8px;
}

/* ---- 工具头部 ---- */
.tool-header {
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
    border-radius: 16px;
    padding: 32px 28px;
    margin: 12px 0 28px;
    border: 1px solid #e2e8f0;
}
.tool-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: #0f172a;
}
.tool-header h1 .icon {
    margin-right: 10px;
}
.tool-header .desc {
    font-size: 16px;
    color: #475569;
    margin-top: 8px;
    max-width: 640px;
}

/* ---- 主容器 ---- */
.tool-main {
    background: #fff;
    border-radius: 16px;
    padding: 32px 28px;
    border: 1px solid #eef2f6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    margin-bottom: 40px;
}

/* ---- 上传区域 ---- */
.upload-area {
    border: 2px dashed #cbd5e1;
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
}
.upload-area:hover {
    border-color: #2563eb;
    background: #f8fafc;
}
.upload-area .icon-big {
    font-size: 56px;
    display: block;
    margin-bottom: 12px;
}
.upload-area p {
    color: #64748b;
    font-size: 15px;
}
.upload-area .hint {
    font-size: 13px;
    color: #94a3b8;
    margin-top: 8px;
}
.upload-area input[type="file"] {
    display: none;
}

/* ---- 设置行（通用） ---- */
.options-row,
.settings-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px 30px;
    margin: 20px 0 16px;
    padding: 16px 20px;
    background: #f8fafc;
    border-radius: 12px;
    align-items: flex-end;
}
.settings-group {
    flex: 1 1 180px;
    min-width: 140px;
}
.settings-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: #0f172a;
    margin-bottom: 4px;
}

/* ---- 按钮 ---- */
.btn-primary,
.btn-secondary,
.btn-success {
    padding: 10px 32px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
    text-align: center;
}
.btn-primary {
    background: #2563eb;
    color: #fff;
}
.btn-primary:hover {
    background: #1d4ed8;
}
.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn-secondary {
    background: #e2e8f0;
    color: #1e293b;
}
.btn-secondary:hover {
    background: #cbd5e1;
}
.btn-success {
    background: #16a34a;
    color: #fff;
}
.btn-success:hover {
    background: #15803d;
}
.btn-success:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---- 操作按钮组 ---- */
.action-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 8px;
}

/* ---- 预览区域 ---- */
.preview-area {
    border-radius: 12px;
    border: 1px solid #eef2f6;
    background: #fafcff;
    overflow: hidden;
    transition: all 0.3s;
    display: none;
    margin-top: 20px;
}
.preview-area.active {
    display: block;
}
.preview-area .preview-image-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
    min-height: 160px;
    padding: 16px;
}
.preview-area .preview-image-wrap img,
.preview-area .preview-image-wrap canvas {
    max-width: 100%;
    max-height: 460px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    background: #f1f5f9;
    display: block;
}
.preview-area .preview-image-wrap .placeholder-text {
    color: #94a3b8;
    font-size: 15px;
    padding: 40px 20px;
    text-align: center;
}
.preview-area .preview-image-wrap .placeholder-text .icon-big {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
}

/* ---- 预览信息栏 ---- */
.preview-info {
    padding: 16px 20px;
    background: #fff;
    border-top: 1px solid #eef2f6;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 28px;
    font-size: 14px;
    color: #475569;
}
.preview-info .info-item {
    display: flex;
    align-items: baseline;
    gap: 4px;
}
.preview-info .info-item .label {
    color: #94a3b8;
    font-weight: 400;
}
.preview-info .info-item .value {
    font-weight: 600;
    color: #0f172a;
}
.preview-info .info-item .value.success {
    color: #16a34a;
}
.preview-info .info-item .arrow {
    color: #94a3b8;
    margin: 0 4px;
}

/* ---- 预览区下载按钮容器 ---- */
.preview-download {
    padding: 12px 20px 16px;
    background: #fff;
    border-top: 1px solid #eef2f6;
    text-align: center;
}

/* ===== iframe 内嵌时的通用隐藏 ===== */
body.in-iframe .header,
body.in-iframe .category-nav,
body.in-iframe .breadcrumb,
body.in-iframe .footer,
body.in-iframe .tool-header {
    display: none !important;
}
body.in-iframe .upload-area {
    display: none !important;
}
body.in-iframe .container {
    max-width: 100%;
    padding: 0;
}
body.in-iframe .tool-main {
    border-radius: 0;
    border: none;
    box-shadow: none;
    padding: 16px 20px;
    margin: 0;
    background: transparent;
}
body.in-iframe .options-row,
body.in-iframe .settings-row {
    padding: 12px 16px;
    margin: 12px 0;
}
body.in-iframe .action-buttons {
    gap: 12px;
}
body.in-iframe .action-buttons .btn-primary,
body.in-iframe .action-buttons .btn-secondary,
body.in-iframe .action-buttons .btn-success {
    padding: 8px 24px;
    font-size: 15px;
}
body.in-iframe .preview-area .preview-image-wrap img,
body.in-iframe .preview-area .preview-image-wrap canvas {
    max-height: 360px;
}
body.in-iframe .preview-info {
    font-size: 13px;
    padding: 12px 16px;
    gap: 8px 16px;
}

/* ===== 响应式（工具页面通用） ===== */
@media (max-width: 768px) {
    .tool-header {
        padding: 24px 18px;
    }
    .tool-header h1 {
        font-size: 22px;
    }
    .tool-main {
        padding: 24px 16px;
    }
    .options-row,
    .settings-row {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    .action-buttons button {
        width: 100%;
        justify-content: center;
    }
    .preview-info {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 12px 16px;
    }
    .preview-info .info-item {
        justify-content: space-between;
    }
    .preview-area .preview-image-wrap img,
    .preview-area .preview-image-wrap canvas {
        max-height: 320px;
    }
    body.in-iframe .tool-main {
        padding: 12px 12px;
    }
    body.in-iframe .options-row,
    body.in-iframe .settings-row {
        padding: 10px;
    }
    body.in-iframe .preview-area .preview-image-wrap img,
    body.in-iframe .preview-area .preview-image-wrap canvas {
        max-height: 260px;
    }
}
@media (max-width: 480px) {
    .tool-header h1 {
        font-size: 19px;
    }
    .upload-area {
        padding: 28px 12px;
    }
    .upload-area .icon-big {
        font-size: 40px;
    }
    .preview-area .preview-image-wrap img,
    .preview-area .preview-image-wrap canvas {
        max-height: 220px;
    }
    .preview-info {
        font-size: 12px;
        padding: 10px 12px;
    }
    body.in-iframe .upload-area {
        display: none;
    }
    body.in-iframe .preview-area .preview-image-wrap img,
    body.in-iframe .preview-area .preview-image-wrap canvas {
        max-height: 200px;
    }
}