/**
 * style.css — 图片格式转换器工具页专属样式
 * 原则：不覆盖官网 style.css 的任何已有类（.container/.section/.page-header/.footer 等一律不在此重定义）
 * 仅保留工具页面独有组件样式；移动端导航/页脚适配断点照抄官网 drill 页内联写法
 */

/* ==================== 设计令牌（与官网一致，仅作后备） ==================== */
:root {
    --primary: #1a6eff;
    --primary-light: #e8f1ff;
    --primary-dark: #0d4fc4;
    --primary-gradient: linear-gradient(135deg, #1a6eff 0%, #0d4fc4 100%);
    --text: #1a1a2e;
    --text-secondary: #5a5a7a;
    --text-light: #8a8aa0;
    --bg: #ffffff;
    --bg-warm: #f8fafc;
    --bg-card: #ffffff;
    --border: #e8ecf4;
    --shadow: 0 4px 24px rgba(26, 110, 255, 0.08);
    --shadow-hover: 0 12px 40px rgba(26, 110, 255, 0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --warning: #ff6b35;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --success: #16a34a;
    --success-light: #f0fdf4;
}

/* ==================== 页面标题高亮（官网无此类，需保留） ==================== */
.page-header h1 .hl {
    background: var(--primary-gradient);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ==================== 工具主体 ==================== */
.tool-section { padding: 48px 0 80px; }

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}
.panel-title {
    font-size: 16px; font-weight: 800; margin-bottom: 18px;
    display: flex; align-items: center; gap: 8px;
}
.panel-title::before {
    content: ''; width: 6px; height: 18px; border-radius: 3px;
    background: var(--primary-gradient);
}

/* 设置面板 */
.settings-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--text); }
.field select, .field input[type="number"], .field input[type="text"] {
    font-family: inherit; font-size: 14px; color: var(--text);
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    padding: 10px 12px; background: white; outline: none;
    transition: var(--transition); width: 100%;
}
.field select:focus, .field input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.field input[type="color"] {
    width: 100%; height: 42px; padding: 4px;
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    background: white; cursor: pointer;
}
.field .hint { font-size: 12px; color: var(--text-light); }
.quality-row { display: flex; align-items: center; gap: 12px; }
.quality-row input[type="range"] { flex: 1; accent-color: var(--primary); }
.quality-row output { font-size: 13px; font-weight: 700; color: var(--primary); min-width: 44px; text-align: right; }
.inline-inputs { display: flex; gap: 8px; align-items: center; }
.inline-inputs input { flex: 1; min-width: 0; }
.inline-inputs span { font-size: 12px; color: var(--text-light); white-space: nowrap; }
.check-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); }
.check-row input { accent-color: var(--primary); width: 16px; height: 16px; }

/* 上传区 */
.dropzone {
    border: 2px dashed rgba(26, 110, 255, 0.35);
    border-radius: var(--radius);
    background: linear-gradient(135deg, #f5f9ff 0%, #ffffff 100%);
    padding: 56px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 24px;
}
.dropzone:hover, .dropzone.over {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.dropzone .dz-icon {
    width: 64px; height: 64px; margin: 0 auto 16px;
    background: var(--primary-gradient); border-radius: 18px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 24px rgba(26, 110, 255, 0.3);
}
.dropzone .dz-icon svg { width: 30px; height: 30px; color: white; }
.dropzone h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.dropzone p { font-size: 13px; color: var(--text-light); }

/* 操作栏 */
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.btn-tool {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px; border-radius: var(--radius-sm);
    font-family: inherit; font-size: 14px; font-weight: 700;
    cursor: pointer; border: none; transition: var(--transition);
}
.btn-tool:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; box-shadow: none !important; }
.btn-primary {
    background: var(--primary-gradient); color: white;
    box-shadow: 0 6px 20px rgba(26, 110, 255, 0.3);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(26, 110, 255, 0.4); }
.btn-zip {
    background: linear-gradient(135deg, #ff6b35 0%, #ff4757 100%); color: white;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
}
.btn-zip:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(255, 107, 53, 0.4); }
.btn-ghost {
    background: white; color: var(--text-secondary);
    border: 1.5px solid var(--border);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--danger); color: var(--danger); background: var(--danger-light); }

/* 文件列表 */
.file-list { display: flex; flex-direction: column; gap: 12px; }
.file-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 16px 20px;
    transition: var(--transition);
}
.file-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(26, 110, 255, 0.2); }
.file-main { display: flex; align-items: center; gap: 16px; }
.file-thumb {
    width: 56px; height: 56px; object-fit: cover;
    border-radius: var(--radius-sm); border: 1px solid var(--border);
    background: var(--bg-warm); flex-shrink: 0;
}
.file-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.file-info strong { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-info span { font-size: 12px; color: var(--text-light); }
.badge {
    font-size: 12px; font-weight: 700; padding: 4px 12px;
    border-radius: 100px; white-space: nowrap; flex-shrink: 0;
}
.badge.wait { background: var(--bg-warm); color: var(--text-light); }
.badge.doing { background: var(--primary-light); color: var(--primary); }
.badge.done { background: var(--success-light); color: var(--success); }
.badge.err { background: var(--danger-light); color: var(--danger); }
.rm-btn {
    width: 30px; height: 30px; border-radius: 8px; border: none;
    background: var(--bg-warm); color: var(--text-light);
    font-size: 18px; cursor: pointer; transition: var(--transition);
    flex-shrink: 0; line-height: 1;
}
.rm-btn:hover { background: var(--danger-light); color: var(--danger); }
.file-result {
    margin-top: 14px; padding-top: 14px;
    border-top: 1px dashed var(--border);
    display: flex; align-items: center; gap: 16px;
}
.file-result img {
    width: 56px; height: 56px; object-fit: cover;
    border-radius: var(--radius-sm); border: 1px solid var(--border);
    background: var(--bg-warm);
}
.result-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.result-info strong { font-size: 13px; color: var(--primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.result-info span { font-size: 12px; color: var(--text-secondary); }
.dl-btn {
    padding: 8px 18px; border-radius: 8px; border: none;
    background: var(--success); color: white;
    font-family: inherit; font-size: 13px; font-weight: 700;
    cursor: pointer; transition: var(--transition); flex-shrink: 0;
}
.dl-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(22, 163, 74, 0.35); }
.empty-state {
    text-align: center; padding: 48px 20px;
    border: 1.5px dashed var(--border); border-radius: var(--radius);
    color: var(--text-light); font-size: 14px; background: var(--bg-warm);
}

/* Toast */
.toast {
    position: fixed; left: 50%; bottom: 32px;
    transform: translateX(-50%) translateY(20px);
    background: var(--text); color: white;
    font-size: 14px; font-weight: 600;
    padding: 12px 24px; border-radius: 100px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    opacity: 0; visibility: hidden; z-index: 9999;
    transition: var(--transition); max-width: calc(100vw - 48px);
    text-align: center;
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--danger); }

/* 格式支持说明表 */
.format-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.format-table th, .format-table td {
    padding: 12px 14px; text-align: left;
    border-bottom: 1px solid var(--border);
}
.format-table th {
    background: var(--bg-warm); font-weight: 700; color: var(--text);
    white-space: nowrap;
}
.format-table td { color: var(--text-secondary); }
.format-table .fmt-name { font-weight: 800; color: var(--primary); white-space: nowrap; }
.tag-pill {
    display: inline-block; font-size: 11px; font-weight: 700;
    padding: 2px 10px; border-radius: 100px; margin-right: 4px;
}
.tag-native { background: var(--primary-light); color: var(--primary); }
.tag-custom { background: #f5f3ff; color: #7c3aed; }
.tag-alpha { background: var(--success-light); color: var(--success); }
.tag-noalpha { background: var(--bg-warm); color: var(--text-light); }

/* 提示横幅 */
.note-banner {
    display: flex; align-items: flex-start; gap: 12px;
    background: linear-gradient(135deg, #e8f1ff 0%, #f0f5ff 100%);
    border: 1.5px solid rgba(26, 110, 255, 0.15);
    border-radius: var(--radius); padding: 16px 20px;
    margin-bottom: 24px; font-size: 13px; color: var(--text-secondary);
    line-height: 1.8;
}
.note-banner svg { width: 20px; height: 20px; color: var(--primary); flex-shrink: 0; margin-top: 2px; }
.note-banner strong { color: var(--text); }

/* ==================== 响应式（断点写法照抄官网 drill 页） ==================== */
@media (max-width: 1024px) {
    .settings-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    /* 顶部导航：照抄官网汉堡菜单规则 */
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: white;
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        gap: 4px;
        border-bottom: 1px solid var(--border);
        z-index: 999;
    }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: flex; }

    /* 页脚：照抄官网断点规则 */
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    /* 工具页自身 */
    .tool-section { padding: 32px 0 56px; }
    .panel { padding: 20px 16px; }
    .settings-grid { grid-template-columns: 1fr; gap: 14px; }
    .actions { flex-direction: column; }
    .btn-tool { width: 100%; justify-content: center; }
    .file-main { flex-wrap: wrap; }
    .file-result { flex-wrap: wrap; }
    .dl-btn { width: 100%; }
    .format-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

@media (max-width: 480px) {
    .dropzone { padding: 36px 16px; }
    .dropzone .dz-icon { width: 52px; height: 52px; border-radius: 14px; }
    .file-thumb, .file-result img { width: 44px; height: 44px; }
}