/* ========================================================================== */
/*  CELESTIAL CONTRAST NEXUS // DUAL-STAR & CROSS-DISCIPLINARY STYLES        */
/*  全息双星对比视界、三栏天平看板、微型悬浮胶囊与跨学科分屏样式              */
/* ========================================================================== */

/* 1. 全局对比视界外层容器 */
.dual-contrast-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 85;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding: 24px 32px 36px 32px;
    box-sizing: border-box;
    transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.35s ease;
}

.dual-contrast-overlay[hidden] {
    display: none !important;
    opacity: 0 !important;
    pointer-events: none !important;
    visibility: hidden !important;
}

/* 2. 三栏天平对比全息看板 (Expanded State) */
.dual-contrast-dossier {
    pointer-events: auto;
    position: relative;
    width: 100%;
    max-width: 1220px;
    max-height: calc(100vh - 110px);
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at 50% 0%, rgba(14, 25, 54, 0.94) 0%, rgba(5, 10, 24, 0.96) 100%);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(56, 189, 248, 0.28);
    border-radius: 20px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.72),
                0 0 40px rgba(0, 240, 255, 0.12),
                inset 0 1px 0 rgba(255, 255, 255, 0.18);
    overflow: hidden;
    transform-origin: center bottom;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.35s ease,
                box-shadow 0.4s ease;
}

/* 看板顶部标题栏 */
.contrast-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: linear-gradient(90deg, rgba(0, 240, 255, 0.08) 0%, rgba(168, 85, 247, 0.1) 50%, rgba(255, 42, 109, 0.08) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.contrast-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.contrast-badge-icon {
    font-size: 16px;
    filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.8));
}

.contrast-main-title {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: #f8fafc;
    text-shadow: 0 0 12px rgba(255, 255, 255, 0.3);
}

.contrast-mode-tag {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
    letter-spacing: 0.5px;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: #7dd3fc;
}

.contrast-mode-tag--cross {
    background: rgba(168, 85, 247, 0.2);
    border-color: rgba(168, 85, 247, 0.45);
    color: #d8b4fe;
}

.contrast-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.contrast-tool-btn {
    appearance: none;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #cbd5e1;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.contrast-tool-btn:hover {
    background: rgba(56, 189, 248, 0.18);
    border-color: rgba(56, 189, 248, 0.45);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.28);
}

.contrast-tool-btn--close {
    font-size: 15px;
    padding: 4px 10px;
    border-radius: 50%;
}

.contrast-tool-btn--close:hover {
    background: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.6);
    color: #fca5a5;
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
}

/* 3. 看板主体内容网格 (三栏天平对决) */
.contrast-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
    display: grid;
    grid-template-columns: 1fr 1.15fr 1fr;
    gap: 16px;
    box-sizing: border-box;
}

/* 左右两侧考点专属档案卡片 */
.contrast-node-card {
    display: flex;
    flex-direction: column;
    background: rgba(10, 18, 38, 0.65);
    border-radius: 14px;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

/* 节点 A (青蓝光效) */
.contrast-node-card--a {
    border-left: 3px solid #00f0ff;
    box-shadow: inset 0 0 24px rgba(0, 240, 255, 0.04);
}
.contrast-node-card--a:hover {
    border-color: rgba(0, 240, 255, 0.4);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.12);
}

/* 节点 B (绯红/品红光效) */
.contrast-node-card--b {
    border-right: 3px solid #ff2a6d;
    box-shadow: inset 0 0 24px rgba(255, 42, 109, 0.04);
}
.contrast-node-card--b:hover {
    border-color: rgba(255, 42, 109, 0.4);
    box-shadow: 0 0 20px rgba(255, 42, 109, 0.12);
}

.contrast-node-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.contrast-node-badge {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.contrast-node-card--a .contrast-node-badge {
    background: rgba(0, 240, 255, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(0, 240, 255, 0.3);
}
.contrast-node-card--b .contrast-node-badge {
    background: rgba(255, 42, 109, 0.15);
    color: #ff7597;
    border: 1px solid rgba(255, 42, 109, 0.3);
}

.contrast-focus-btn {
    appearance: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #94a3b8;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.contrast-focus-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #f1f5f9;
}

.contrast-node-title {
    font-size: 17px;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 6px 0;
    line-height: 1.35;
}

.contrast-node-sector {
    font-size: 11px;
    color: #94a3b8;
    margin-bottom: 12px;
}

/* 核心公式高亮块 */
.contrast-formula-box {
    background: rgba(0, 0, 0, 0.35);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
    border: 1px dashed rgba(255, 255, 255, 0.12);
}
.contrast-formula-label {
    font-size: 10px;
    color: #64748b;
    font-family: monospace;
    display: block;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}
.contrast-formula-math {
    font-size: 15px;
    font-weight: 700;
    font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
    letter-spacing: 0.5px;
}
.contrast-node-card--a .contrast-formula-math { color: #67e8f9; }
.contrast-node-card--b .contrast-formula-math { color: #fda4af; }

/* 物理量列表 */
.contrast-quantities-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}
.contrast-qty-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    background: rgba(255, 255, 255, 0.03);
    padding: 4px 8px;
    border-radius: 6px;
}
.contrast-qty-sym {
    font-family: monospace;
    font-weight: 700;
    color: #e2e8f0;
    width: 24px;
}
.contrast-qty-name { color: #94a3b8; flex: 1; }
.contrast-qty-unit { font-family: monospace; font-size: 10px; color: #64748b; }

.contrast-node-tagline {
    font-size: 12px;
    line-height: 1.55;
    color: #cbd5e1;
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* 4. 中央对决维度中枢 (Nexus Center Column) */
.contrast-nexus-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contrast-matrix-wrap {
    background: rgba(8, 15, 32, 0.72);
    border-radius: 14px;
    border: 1px solid rgba(168, 85, 247, 0.25);
    box-shadow: 0 0 24px rgba(168, 85, 247, 0.08);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.contrast-matrix-header {
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.18) 0%, rgba(56, 189, 248, 0.18) 100%);
    padding: 10px 14px;
    font-size: 12px;
    font-weight: 700;
    color: #e2e8f0;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.contrast-matrix-rows {
    display: flex;
    flex-direction: column;
    divide-y: 1px solid rgba(255, 255, 255, 0.05);
}

.contrast-matrix-row {
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.contrast-matrix-row:last-child {
    border-bottom: none;
}

.contrast-dim-title {
    font-size: 11px;
    font-weight: 700;
    color: #c084fc;
    display: flex;
    align-items: center;
    gap: 6px;
}
.contrast-dim-title::before {
    content: "▶";
    font-size: 8px;
    opacity: 0.7;
}

.contrast-dim-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-size: 12px;
    line-height: 1.45;
}
.contrast-dim-val-a {
    color: #bae6fd;
    background: rgba(0, 240, 255, 0.04);
    padding: 6px 8px;
    border-radius: 6px;
    border-left: 2px solid rgba(0, 240, 255, 0.4);
}
.contrast-dim-val-b {
    color: #fecdd3;
    background: rgba(255, 42, 109, 0.04);
    padding: 6px 8px;
    border-radius: 6px;
    border-left: 2px solid rgba(255, 42, 109, 0.4);
}

/* 5. 易混淆陷阱与黄金口诀区 */
.contrast-traps-card {
    background: rgba(239, 68, 68, 0.06);
    border: 1px solid rgba(239, 68, 68, 0.22);
    border-radius: 12px;
    padding: 10px 14px;
}
.contrast-traps-title {
    font-size: 11px;
    font-weight: 700;
    color: #f87171;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.contrast-traps-list {
    margin: 0;
    padding-left: 18px;
    color: #cbd5e1;
    font-size: 11.5px;
    line-height: 1.5;
}

.contrast-mnemonic-card {
    background: linear-gradient(90deg, rgba(234, 179, 8, 0.12) 0%, rgba(245, 158, 11, 0.06) 100%);
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: 12px;
    padding: 10px 14px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.contrast-mnemonic-icon {
    font-size: 16px;
    flex-shrink: 0;
}
.contrast-mnemonic-text {
    font-size: 12px;
    font-weight: 600;
    color: #fef08a;
    line-height: 1.5;
}

/* 6. 看板底部全局交互操作条 */
.contrast-footer {
    padding: 12px 24px;
    background: rgba(5, 10, 22, 0.85);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contrast-footer-tips {
    font-size: 11px;
    color: #64748b;
    display: flex;
    align-items: center;
    gap: 8px;
}

.contrast-footer-actions {
    display: flex;
    gap: 10px;
}

.contrast-action-btn {
    appearance: none;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #e2e8f0;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.contrast-action-btn:hover {
    background: rgba(56, 189, 248, 0.22);
    border-color: rgba(56, 189, 248, 0.6);
    color: #ffffff;
    box-shadow: 0 0 14px rgba(56, 189, 248, 0.35);
}

.contrast-action-btn--primary {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.25) 0%, rgba(168, 85, 247, 0.25) 100%);
    border-color: rgba(56, 189, 248, 0.5);
    color: #ffffff;
}

/* 7. 最小化底栏悬浮胶囊 (Collapsed Mini Dock) */
.contrast-mini-dock {
    pointer-events: auto;
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    z-index: 90;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 18px;
    background: rgba(8, 16, 36, 0.92);
    border: 1px solid rgba(56, 189, 248, 0.38);
    border-radius: 999px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6),
                0 0 20px rgba(0, 240, 255, 0.2);
    cursor: pointer;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.25s ease,
                border-color 0.25s ease;
}

.contrast-mini-dock:hover {
    transform: translateX(-50%) translateY(-2px);
    border-color: rgba(0, 240, 255, 0.65);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.7),
                0 0 28px rgba(0, 240, 255, 0.35);
}

.contrast-mini-dock[hidden] {
    display: none !important;
}

.mini-dock-icon {
    font-size: 14px;
    filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.8));
}

.mini-dock-label {
    font-size: 13px;
    font-weight: 700;
    color: #f8fafc;
    letter-spacing: 0.5px;
}

.mini-dock-expand-arrow {
    font-size: 11px;
    color: #38bdf8;
    background: rgba(56, 189, 248, 0.15);
    padding: 2px 6px;
    border-radius: 999px;
    font-weight: bold;
}

/* 8. 跨学科双视口分屏中轴分割线 (Cross-Disciplinary Split Divider) */
.cross-split-divider {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.8) 25%, rgba(168, 85, 247, 0.9) 50%, rgba(255, 42, 109, 0.8) 75%, transparent 100%);
    box-shadow: 0 0 16px rgba(0, 240, 255, 0.6), 0 0 28px rgba(168, 85, 247, 0.4);
    pointer-events: none;
    z-index: 70;
    display: none;
}

.cross-split-divider.is-active {
    display: block;
}

/* 视口浮动标签徽章 (左屏/右屏标示) */
.split-viewport-badge {
    position: fixed;
    top: 64px;
    z-index: 75;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.8px;
    pointer-events: none;
    backdrop-filter: blur(12px);
    display: none;
}
.split-viewport-badge.is-active {
    display: flex;
    align-items: center;
    gap: 6px;
}

.split-viewport-badge--left {
    left: 32px;
    background: rgba(0, 240, 255, 0.15);
    border: 1px solid rgba(0, 240, 255, 0.4);
    color: #7dd3fc;
    box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
}

.split-viewport-badge--right {
    right: 32px;
    background: rgba(255, 42, 109, 0.15);
    border: 1px solid rgba(255, 42, 109, 0.4);
    color: #fda4af;
    box-shadow: 0 0 16px rgba(255, 42, 109, 0.2);
}

/* 9. 单星详情画卷中的发起对比触发按钮 */
.stream-contrast-trigger-btn {
    appearance: none;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.12) 0%, rgba(168, 85, 247, 0.16) 100%);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: #bae6fd;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
    transition: all 0.22s ease;
}

.stream-contrast-trigger-btn:hover {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.25) 0%, rgba(168, 85, 247, 0.32) 100%);
    border-color: rgba(0, 240, 255, 0.65);
    color: #ffffff;
    box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
    transform: translateY(-1px);
}

/* 推荐对比项目浮层下拉 */
.stream-contrast-menu {
    position: absolute;
    background: rgba(6, 12, 28, 0.96);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 10px;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.65);
    padding: 8px;
    min-width: 220px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stream-contrast-menu-item {
    appearance: none;
    background: transparent;
    border: none;
    color: #e2e8f0;
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 6px;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.15s ease;
}

.stream-contrast-menu-item:hover {
    background: rgba(56, 189, 248, 0.18);
    color: #38bdf8;
}

/* 响应式收敛 */
@media (max-width: 1024px) {
    .dual-contrast-body {
        grid-template-columns: 1fr;
        max-height: 55vh;
    }
    .contrast-node-card--a {
        border-left: 3px solid #00f0ff;
        border-right: none;
    }
    .contrast-node-card--b {
        border-right: none;
        border-left: 3px solid #ff2a6d;
    }
}