/* 嵩云资产 · 网格策略分析工具 */
:root{--font-sans:'Inter','PingFang SC','Microsoft YaHei',sans-serif}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font-sans);background:linear-gradient(135deg,#eff6ff,#fff,#eef2ff);min-height:100vh;color:#1f2937}
.container{max-width:1280px;margin:0 auto;padding:0 16px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* Header */
.header{background:#fff;border-bottom:1px solid #e5e7eb;box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.header-inner{display:flex;justify-content:space-between;align-items:center;height:56px}@media(min-width:640px){.header-inner{height:64px}}
.header-left{display:flex;align-items:center;gap:8px}@media(min-width:640px){.header-left{gap:12px}}
.logo-icon{padding:6px 8px;background:linear-gradient(135deg,#2563eb,#4f46e5);border-radius:8px}
.logo-icon svg{width:20px;height:20px;color:#fff}@media(min-width:640px){.logo-icon svg{width:22px;height:22px}}
.logo-text h1{font-size:18px;font-weight:700;color:#111827;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media(min-width:640px){.logo-text h1{font-size:20px}}
.logo-text p{display:none;font-size:13px;color:#6b7280}@media(min-width:640px){.logo-text p{display:block}}
.header-right{display:flex;align-items:center;gap:8px}
.header-right a{display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:8px;color:#6b7280;text-decoration:none;font-size:13px;transition:all 0.2s}
.header-right a:hover{background:#f9fafb;color:#111827}

/* Main content */
main{padding:32px 0}

/* Card */
.card{background:#fff;border-radius:12px;border:1px solid #e5e7eb;box-shadow:0 1px 3px rgba(0,0,0,0.05);padding:32px;margin-bottom:32px}
.card-no-pad{padding:0}
.card-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.card-icon{padding:8px;border-radius:8px;display:flex}
.card-icon.blue{background:#dbeafe}
.card-icon.blue svg{color:#2563eb;width:24px;height:24px}
.card-icon.purple{background:#f3e8ff}
.card-icon.purple svg{color:#9333ea}
.card-icon.green{background:#dcfce7}
.card-icon.green svg{color:#16a34a}
.card-title{font-size:20px;font-weight:700;color:#111827}
.card-subtitle{font-size:14px;color:#6b7280}

/* Hero */
.hero{text-align:center;margin-bottom:32px}
.hero h2{font-size:30px;font-weight:700;color:#111827;margin-bottom:16px}
@media(max-width:640px){.hero h2{font-size:24px}}
.hero p{font-size:18px;color:#6b7280;max-width:768px;margin:0 auto;line-height:1.6}
@media(max-width:640px){.hero p{font-size:15px}}

/* Feature grid */
.features{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:32px}
@media(min-width:768px){.features{grid-template-columns:repeat(3,1fr)}}
.feature{text-align:center;padding:24px;border-radius:12px}
.feature.blue{background:#eff6ff}
.feature.green{background:#f0fdf4}
.feature.purple{background:#faf5ff}
.feature-icon{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.feature-icon.blue{background:#bfdbfe}
.feature-icon.blue svg{color:#1d4ed8;width:24px;height:24px}
.feature-icon.green{background:#bbf7d0}
.feature-icon.green svg{color:#15803d;width:24px;height:24px}
.feature-icon.purple{background:#e9d5ff}
.feature-icon.purple svg{color:#7e22ce;width:24px;height:24px}
.feature h3{font-size:16px;font-weight:600;color:#111827;margin-bottom:8px}
.feature p{font-size:14px;color:#6b7280;line-height:1.5}

/* Button */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:8px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all 0.2s;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,#2563eb,#4f46e5);color:#fff;box-shadow:0 4px 12px rgba(37,99,235,0.3)}
.btn-primary:hover{transform:scale(1.05);box-shadow:0 6px 20px rgba(37,99,235,0.4)}
.btn-primary:disabled{opacity:0.5;cursor:not-allowed;transform:none}
.btn-secondary{background:#f3f4f6;color:#374151;border:1px solid #e5e7eb}
.btn-secondary:hover{background:#e5e7eb}
.btn-block{width:100%;padding:16px;justify-content:center;font-size:15px}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-warning{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}

/* Form */
.form-group{margin-bottom:24px}
.form-label{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:#374151;margin-bottom:12px}
.form-label svg{width:16px;height:16px}
.form-input{width:100%;padding:12px 16px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;outline:none;transition:border-color 0.2s,box-shadow 0.2s}
.form-input:focus{border-color:transparent;box-shadow:0 0 0 2px #3b82f6}
.form-input.error{border-color:#f87171}
.form-input-wrapper{position:relative}
.form-input-suffix{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:#9ca3af;font-size:14px}
.form-error{font-size:13px;color:#dc2626;margin-top:4px}
.form-hint{font-size:12px;color:#9ca3af;margin-right:8px}
.form-submit{margin-top:8px}

/* Preset buttons */
.presets{display:flex;flex-wrap:wrap;gap:8px}
.preset-btn{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:999px;font-size:12px;border:1px solid #e5e7eb;background:#f9fafb;color:#6b7280;cursor:pointer;transition:all 0.2s}
.preset-btn:hover{background:#f3f4f6}
.preset-btn.active{background:#dbeafe;border-color:#93c5fd;color:#1d4ed8}

/* Radio grid */
.radio-group{display:grid;gap:12px}
.radio-grid-2{grid-template-columns:repeat(2,1fr)}
.radio-grid-3{grid-template-columns:repeat(3,1fr)}
.radio-card{padding:16px;border:1px solid #e5e7eb;border-radius:8px;cursor:pointer;transition:all 0.2s}
.radio-card:hover{border-color:#d1d5db}
.radio-card.active{border-color:#93c5fd;background:#eff6ff}
.radio-card input[type=radio]{display:none}
.radio-card-label{font-weight:500;color:#111827;margin-bottom:4px}
.radio-card-desc{font-size:13px;color:#6b7280}

/* Slider */
.slider-section{background:#f9fafb;border-radius:8px;padding:16px}
.slider-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.slider-header span{font-size:14px;font-weight:500;color:#374151}
.slider-value{font-size:18px;font-weight:700;color:#2563eb}
.slider{width:100%;height:8px;border-radius:4px;appearance:none;outline:none;background:#e5e7eb;cursor:pointer}
.slider::-webkit-slider-thumb{appearance:none;width:20px;height:20px;border-radius:50%;background:#2563eb;cursor:pointer;border:2px solid #fff;box-shadow:0 1px 3px rgba(0,0,0,0.2)}
.slider-labels{display:flex;justify-content:space-between;font-size:12px;color:#9ca3af;margin-top:4px}
.slider-hint{font-size:13px;color:#6b7280}
.slider-hint.warning{color:#ea580c}
.slider-tips{font-size:12px;color:#9ca3af;margin-top:8px;line-height:1.8}

/* ETF Info */
.etf-info{background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;padding:12px;margin-top:8px;min-height:80px}
.etf-info-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.etf-info-name{font-weight:500;color:#1e40af}
.etf-info-price{font-size:14px;color:#2563eb}
.etf-info-change.up{color:#059669}
.etf-info-change.down{color:#dc2626}
.etf-info-time{font-size:12px;color:#60a5fa;margin-top:4px}
.etf-info-skeleton{display:flex;align-items:center;gap:12px;padding:12px}
.skeleton{background:#e5e7eb;border-radius:4px;animation:pulse 1.5s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}
.skeleton-icon{width:24px;height:24px;border-radius:50%}
.skeleton-text{height:16px;flex:1}
.skeleton-price{height:16px;width:80px}
.etf-info-loading{display:flex;align-items:center;gap:8px;margin-top:8px;color:#6b7280;font-size:13px}
.loading-spinner{width:16px;height:16px;border:2px solid #e5e7eb;border-top-color:#2563eb;border-radius:50%;animation:spin 0.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Separator */
.separator{position:relative;margin:24px 0}
.separator-line{position:absolute;inset:0;display:flex;align-items:center}
.separator-line::before{content:'';width:100%;border-top:1px solid #d1d5db}
.separator-text{position:relative;display:flex;justify-content:center;font-size:14px}
.separator-text span{background:#fff;padding:0 8px;color:#9ca3af}

/* Grid config table */
.grid-table{width:100%;border-collapse:collapse;font-size:13px}
.grid-table th{background:#f9fafb;padding:10px 12px;text-align:left;font-weight:600;color:#374151;border-bottom:2px solid #e5e7eb}
.grid-table td{padding:10px 12px;border-bottom:1px solid #f3f4f6}
.grid-table tr:hover{background:#f9fafb}

/* Analysis Result */
.result-section{display:grid;gap:24px}
@media(min-width:768px){.result-section{grid-template-columns:1fr 1fr}}
.result-card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.result-card-title{font-size:16px;font-weight:600;color:#111827;margin-bottom:12px;display:flex;align-items:center;gap:8px}

/* Score */
.score-bar{height:10px;border-radius:5px;background:#e5e7eb;overflow:hidden;margin:4px 0}
.score-fill{height:100%;border-radius:5px;transition:width 0.5s ease}
.score-fill.good{background:linear-gradient(90deg,#22c55e,#16a34a)}
.score-fill.mid{background:linear-gradient(90deg,#f59e0b,#d97706)}
.score-fill.poor{background:linear-gradient(90deg,#ef4444,#dc2626)}
.score-fill.blue{background:linear-gradient(90deg,#3b82f6,#2563eb)}

/* Tabs */
.tabs{display:flex;gap:16px;overflow-x:auto;border-bottom:2px solid #e5e7eb;padding:0 16px;margin-bottom:0}
.tab-btn{display:flex;align-items:center;gap:8px;padding:12px 8px;border-bottom:2px solid transparent;font-size:14px;font-weight:500;color:#6b7280;cursor:pointer;transition:all 0.2s;white-space:nowrap;background:none;border-top:none;border-left:none;border-right:none;margin-bottom:-2px}
.tab-btn:hover{color:#374151}
.tab-btn.active{color:#2563eb;border-bottom-color:#2563eb}
.tab-btn svg{width:16px;height:16px}
.tab-content{padding:24px 0}

/* Stats grid */
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:640px){.stats-grid{grid-template-columns:repeat(4,1fr)}}
.stat-item{text-align:center;padding:16px;background:#f9fafb;border-radius:8px;border:1px solid #f3f4f6}
.stat-label{font-size:12px;color:#6b7280;margin-bottom:4px}
.stat-value{font-size:20px;font-weight:700;color:#111827}
.stat-value.green{color:#16a34a}
.stat-value.red{color:#dc2626}

/* Loading */
.analysis-loading{text-align:center;padding:48px}
.analysis-loading .spinner{width:40px;height:40px;border:3px solid #e5e7eb;border-top-color:#2563eb;border-radius:50%;animation:spin 0.6s linear infinite;margin:0 auto 16px}
.analysis-steps{max-width:400px;margin:0 auto;text-align:left}
.analysis-step{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid #f3f4f6}
.analysis-step:last-child{border-bottom:none}
.step-icon{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.step-icon.pending{background:#f3f4f6}
.step-icon.pending svg{color:#9ca3af;width:14px;height:14px}
.step-icon.active{background:#dbeafe}
.step-icon.active svg{color:#2563ed;width:14px;height:14px}
.step-icon.done{background:#dcfce7}
.step-icon.done svg{color:#16a34a;width:14px;height:14px}
.step-text{font-size:14px;color:#6b7280}
.step-text.active{color:#1d4ed8;font-weight:500}
.step-text.done{color:#16a34a;font-weight:500}
.step-spinner{width:14px;height:14px;border:2px solid #bfdbfe;border-top-color:#2563eb;border-radius:50%;animation:spin 0.6s linear infinite}

/* Divider */
.divider{border:none;border-top:1px solid #e5e7eb;margin:16px 0}

/* Footer */
.footer{background:#fff;border-top:1px solid #e5e7eb;margin-top:64px}
.footer-inner{max-width:1280px;margin:0 auto;padding:32px 16px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}@media(min-width:768px){.footer-grid{grid-template-columns:repeat(3,1fr)}}
.footer h4{font-weight:600;color:#111827;margin-bottom:16px}
.footer ul{list-style:none}
.footer li{padding:4px 0;font-size:14px;color:#6b7280}
.footer-bottom{border-top:1px solid #e5e7eb;margin-top:32px;padding-top:32px;text-align:center}
.footer-bottom p{font-size:14px;color:#9ca3af}

/* Utility */
.text-center{text-align:center}
.text-gray-600{color:#6b7280}
.text-gray-700{color:#374151}
.text-sm{font-size:14px}
.text-xs{font-size:12px}
.mt-2{margin-top:8px}
.mt-4{margin-top:16px}
.mb-3{margin-bottom:12px}
.mb-6{margin-bottom:24px}
.mb-8{margin-bottom:32px}
.flex{display:flex}
.items-center{align-items:center}
.gap-2{gap:8px}
.gap-3{gap:12px}
.gap-4{gap:16px}
.flex-wrap{flex-wrap:wrap}
.space-y-2>*+*{margin-top:8px}
.space-y-4>*+*{margin-top:16px}
.space-y-6>*+*{margin-top:24px}

/* Warnings */
.warning-box{padding:16px;border-radius:8px;display:flex;gap:8px;align-items:flex-start;margin-top:16px}
.warning-box.red{background:#fef2f2;border:1px solid #fecaca}
.warning-box.yellow{background:#fefce8;border:1px solid #fde68a}
.warning-box.blue{background:#eff6ff;border:1px solid #bfdbfe}
.warning-box svg{width:16px;height:16px;flex-shrink:0;margin-top:2px}
.warning-box .warning-title{font-weight:500;font-size:14px;margin-bottom:4px}
.warning-box p{font-size:13px;line-height:1.5}

/* Back button */
.back-link{display:inline-flex;align-items:center;gap:8px;color:#6b7280;text-decoration:none;font-size:14px;margin-bottom:16px}
.back-link:hover{color:#374151}

/* Backtest table */
.scroll-table{overflow-x:auto}
.scroll-table table{min-width:600px}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:500}
.badge.buy{background:#dcfce7;color:#16a34a}
.badge.sell{background:#fef2f2;color:#dc2626}

/* Disclaimer Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:50;display:flex;align-items:center;justify-content:center;padding:16px}
.modal{background:#fff;border-radius:12px;max-width:480px;width:100%;padding:24px}
.modal-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.modal-icon{padding:8px;background:#fef3c7;border-radius:8px}
.modal-icon svg{width:24px;height:24px;color:#d97706}
.modal h3{font-size:20px;font-weight:700;color:#111827}
.modal .subtitle{font-size:14px;color:#6b7280}
.modal-body{padding:16px;background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;font-size:14px;color:#374151;line-height:1.6;margin-bottom:24px}
.modal-checkbox{display:flex;align-items:center;gap:8px;margin-bottom:16px;padding:8px}
.modal-checkbox input[type=checkbox]{width:16px;height:16px}
.modal-checkbox label{font-size:14px;color:#374151}
.modal-actions{display:flex;gap:8px}
.modal-actions button{flex:1;padding:12px;border-radius:8px;font-weight:500;font-size:14px;border:none;cursor:pointer;transition:all 0.2s}
.modal-cancel{background:#f3f4f6;color:#374151}
.modal-cancel:hover{background:#e5e7eb}
.modal-confirm{background:#2563eb;color:#fff}
.modal-confirm:hover{background:#1d4ed8}
.modal-confirm:disabled{opacity:0.5;cursor:not-allowed}

/* Share button animation */
@keyframes fadeIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.animate-fade-in{animation:fadeIn 0.3s ease}