/* ============================================================
   分析路径指引 & AI综合诊断 — 共用样式
   ============================================================ */

/* ── Hero ── */
.ag-hero {
    padding: var(--spacing-2xl) var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}
.ag-hero::before {
    content: '';
    position: absolute;
    top: -80px; right: -80px;
    width: 340px; height: 340px;
    background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.ag-hero::after {
    content: '';
    position: absolute;
    bottom: -30px; left: 28%;
    width: 180px; height: 180px;
    background: radial-gradient(circle, rgba(237,137,54,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.ag-hero-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    letter-spacing: -0.02em;
}
.ag-hero-title i { color: var(--action-color); }
.ag-hero-desc {
    font-size: 0.96rem;
    color: var(--text-secondary);
    max-width: 640px;
    line-height: 1.65;
}
.ag-hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}
.ag-hero-tag {
    background: rgba(255,255,255,0.65);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 5px 14px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ── Tab 切换 ── */
.ag-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}
.ag-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 11px 22px;
    border: none;
    background: none;
    font-size: 0.92rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2.5px solid transparent;
    margin-bottom: -2px;
    transition: color .15s, border-color .15s;
}
.ag-tab:hover { color: var(--text-primary); }
.ag-tab.active {
    color: var(--action-color);
    border-bottom-color: var(--action-color);
}
.ag-tab i { font-size: 1rem; }
.ag-tab-badge {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-color);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}
.ag-tab.active .ag-tab-badge {
    background: var(--action-light);
    color: var(--action-color);
}

/* ── Tab 面板 ── */
.ag-tab-panel { display: none; }
.ag-tab-panel.active {
    display: block;
    animation: agFadeIn .25s ease;
}
@keyframes agFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── 横向网格节点 ── */
.ag-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding-top: 12px;
}

.ag-node {
    position: relative;
}
.ag-node--last {
    grid-column: 1 / -1;
}

/* 数字角标（绝对定位到卡片左上角） */
.ag-node-left {
    position: absolute;
    top: -10px;
    left: 12px;
    z-index: 2;
}
.ag-dot {
    width: 32px; height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    background: var(--node-color);
    color: #fff;
    flex-shrink: 0;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(var(--node-rgb), 0.30);
    transition: transform .2s;
}
.ag-node:hover .ag-dot { transform: scale(1.1); }
.ag-dot--accent {
    width: 36px; height: 36px;
    box-shadow: 0 3px 12px rgba(var(--node-rgb), 0.40);
}
/* 隐藏原连线 */
.ag-node-left::after { display: none; }

/* 卡片 */
.ag-node-card {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: calc(var(--spacing-md) + 10px) var(--spacing-lg) var(--spacing-md);
    transition: border-color .2s, box-shadow .2s;
    height: 100%;
}
.ag-node:hover .ag-node-card {
    border-color: rgba(var(--node-rgb), 0.30);
    box-shadow: 0 4px 16px rgba(var(--node-rgb), 0.08);
}
.ag-node-card--accent {
    border-color: rgba(var(--node-rgb), 0.35);
    background: linear-gradient(160deg, #fffbf5, #fff8f0);
}

/* 卡片头部 */
.ag-node-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}
.ag-node-head h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0 0 4px;
}
.ag-node-head h3 i {
    color: var(--node-color);
    font-size: 1.05rem;
}
.ag-node-head p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* 工具 chip 列表 */
.ag-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.ag-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    background: var(--bg-color);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all .15s;
    white-space: nowrap;
}
.ag-chip i { font-size: 0.85rem; }
.ag-chip:hover {
    background: rgba(var(--node-rgb), 0.06);
    border-color: rgba(var(--node-rgb), 0.35);
    color: var(--node-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(var(--node-rgb), 0.12);
}

/* ── Icon color themes ── */
.icon-amber  { background: linear-gradient(135deg, #fffbeb, #fef3c7); color: #d97706; }
.icon-orange { background: linear-gradient(135deg, #fff7ed, #fed7aa); color: #ea7c1e; }
.icon-blue   { background: linear-gradient(135deg, #eff6ff, #dbeafe); color: #2563eb; }
.icon-sky    { background: linear-gradient(135deg, #f0f9ff, #e0f2fe); color: #0284c7; }
.icon-green  { background: linear-gradient(135deg, #f0fdf4, #dcfce7); color: #16a34a; }
.icon-teal   { background: linear-gradient(135deg, #f0fdfa, #ccfbf1); color: #0d9488; }
.icon-purple { background: linear-gradient(135deg, #faf5ff, #f3e8ff); color: #9333ea; }
.icon-indigo { background: var(--action-light); color: var(--action-hover); }
.icon-red    { background: linear-gradient(135deg, #fff1f2, #ffe4e6); color: #e11d48; }
.icon-cyan   { background: linear-gradient(135deg, #ecfeff, #cffafe); color: #0891b2; }

/* ── AI Diagnosis CTA ── */
.ag-cta {
    background: linear-gradient(135deg, #eef4fb 0%, #f5f0ff 50%, #fef5ec 100%);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl) var(--spacing-2xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    color: var(--text-primary);
    flex-wrap: wrap;
    position: relative;
    overflow: hidden;
}
.ag-cta-text h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.ag-cta-text p {
    font-size: 0.87rem;
    color: var(--text-secondary);
    max-width: 480px;
    line-height: 1.55;
}
.ag-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 26px;
    background: linear-gradient(135deg, #f97316, var(--accent-color));
    color: #fff;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(237,137,54,0.40);
}
.ag-cta-btn:hover {
    background: linear-gradient(135deg, #ea6c05, #f97316);
    box-shadow: 0 6px 20px rgba(237,137,54,0.50);
    transform: translateY(-2px);
}

/* ============================================================
   AI 综合诊断页面专用
   ============================================================ */
.diag-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.diag-form-panel {
    position: sticky;
    top: 80px;
}

.diag-section {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}
.diag-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px var(--spacing-md);
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    user-select: none;
}
.diag-section-icon {
    width: 28px; height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}
.diag-section-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}
.diag-section-toggle {
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}
.diag-section.collapsed .diag-section-toggle { transform: rotate(-90deg); }
.diag-section-body {
    padding: var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.diag-section.collapsed .diag-section-body { display: none; }

.diag-field { display: flex; flex-direction: column; gap: 4px; }
.diag-field.full { grid-column: 1 / -1; }
.diag-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.diag-input {
    padding: 7px 10px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-card);
    transition: border-color var(--transition-fast);
    outline: none;
    width: 100%;
}
.diag-input:focus { border-color: var(--primary-color); }
.diag-input::placeholder { color: var(--text-light); }
textarea.diag-input { resize: vertical; min-height: 60px; }

.diag-meta-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.diag-submit-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-color), #2d5a9e);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 700;
    font-family: var(--font-sans);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    margin-top: var(--spacing-md);
}
.diag-submit-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.diag-submit-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ── 结果面板 ── */
.diag-result-panel {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    min-height: 400px;
}
.diag-result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 360px;
    color: var(--text-muted);
    gap: var(--spacing-md);
}
.diag-result-placeholder i { font-size: 2.5rem; opacity: 0.35; }
.diag-result-placeholder p { font-size: 0.88rem; line-height: 1.6; }

.diag-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}
.diag-result-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}
.diag-result-copy {
    padding: 5px 12px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}
.diag-result-copy:hover { border-color: var(--primary-color); color: var(--primary-color); }

.diag-result-content {
    font-size: 0.88rem;
    line-height: 1.75;
    color: var(--text-primary);
}
.diag-result-content h2 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: var(--spacing-md) 0 var(--spacing-sm);
    color: var(--primary-color);
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-light);
}
.diag-result-content h2:first-child { margin-top: 0; }
.diag-result-content ul, .diag-result-content ol {
    padding-left: 1.4em;
    margin: 6px 0;
}
.diag-result-content li { margin-bottom: 4px; }
.diag-result-content strong { color: var(--text-primary); }
.diag-result-content p { margin: 6px 0; }

.diag-streaming-cursor::after {
    content: '▌';
    animation: blink 1s step-end infinite;
    color: var(--primary-color);
    font-size: 0.85em;
}
@keyframes blink { 50% { opacity: 0; } }

.diag-tip {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.8rem;
    color: #15803d;
    margin-top: var(--spacing-sm);
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.5;
}
.diag-tip i { margin-top: 1px; flex-shrink: 0; }

/* ── 返回链接 ── */
.ag-back-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}
.ag-back-link:hover { color: var(--primary-color); }

/* ── 响应式 ── */
@media (max-width: 900px) {
    .ag-timeline { grid-template-columns: repeat(2, 1fr); }
    .diag-layout {
        grid-template-columns: 1fr;
    }
    .diag-form-panel { position: static; }
    .ag-cta {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
    }
}
@media (max-width: 600px) {
    .ag-timeline { grid-template-columns: 1fr; }
    .ag-hero { padding: var(--spacing-lg); }
    .ag-hero-title { font-size: 1.3rem; }
    .ag-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .ag-tab { white-space: nowrap; padding: 10px 14px; font-size: 0.85rem; }
    .ag-tab-badge { display: none; }
    .ag-dot { width: 26px; height: 26px; font-size: 0.7rem; }
    .ag-node-card { padding: var(--spacing-sm) var(--spacing-md); }
    .ag-node-head h3 { font-size: 0.88rem; }
    .ag-chips { gap: 6px; }
    .ag-chip { padding: 5px 10px; font-size: 0.75rem; }
    .diag-section-body {
        grid-template-columns: 1fr;
    }
    .diag-meta-row { grid-template-columns: 1fr; }
}