/* ========== Weight Sub-Navigation ========== */
.weight-sub-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    border: 1px solid var(--border-color);
}

.weight-sub-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.weight-sub-tab:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.weight-sub-tab.active {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.weight-sub-pane {
    display: none;
    animation: pageFadeIn 0.3s ease;
}

.weight-sub-pane.active {
    display: block;
}

/* ========== Weight Engine Grid ========== */
.weight-engine-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: var(--spacing-xl);
}

/* ========== Weight Steps ========== */
.weight-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.weight-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    transition: all var(--transition-fast);
}

.weight-step-num {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--border-light);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.weight-step.completed .weight-step-num {
    background: var(--color-success);
    color: white;
}

.weight-step.active .weight-step-num {
    background: var(--color-primary);
    color: white;
    animation: weight-pulse-step 1.5s infinite;
}

@keyframes weight-pulse-step {
    0%, 100% { box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(102, 126, 234, 0); }
}

.weight-step-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.weight-step-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.weight-step-status {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.weight-step.completed .weight-step-status {
    color: var(--color-success);
}

.weight-step.active .weight-step-status {
    color: var(--color-primary-light);
}

.weight-step-line {
    width: 2px;
    height: 24px;
    background: var(--border-color);
    margin-left: 15px;
}

.weight-step-line.completed {
    background: var(--color-success);
}

/* ========== Weight Results Grid ========== */
.weight-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

/* ========== Weight Rank List ========== */
.weight-rank-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.weight-rank-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.weight-rank-item:hover {
    background: var(--bg-hover);
}

.weight-rank-num {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.weight-rank-num.top1 { background: #f59e0b; }
.weight-rank-num.top2 { background: #94a3b8; }
.weight-rank-num.top3 { background: #b45309; }
.weight-rank-num.normal { background: var(--border-light); }

.weight-rank-name {
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.weight-rank-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.weight-rank-fill {
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width 0.6s ease;
}

.weight-rank-value {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
    min-width: 50px;
    text-align: right;
}

/* ========== Weight Matrix Toolbar ========== */
.weight-matrix-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
}

.weight-toolbar-right {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* ========== Weight Matrix Table ========== */
.weight-matrix-table {
    font-size: 0.8rem;
}

.weight-matrix-table th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--bg-tertiary);
    font-size: 0.75rem;
    white-space: nowrap;
}

.weight-matrix-table td {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-align: center;
    padding: 6px 10px;
}

.weight-matrix-table td:first-child {
    text-align: left;
    font-family: var(--font-primary);
    font-weight: 500;
    position: sticky;
    left: 0;
    background: var(--bg-card);
    z-index: 1;
}

.weight-matrix-table thead th:first-child {
    position: sticky;
    left: 0;
    z-index: 3;
}

.weight-cell-high { color: #ef4444; font-weight: 600; }
.weight-cell-mid { color: #f59e0b; }
.weight-cell-low { color: var(--text-muted); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .weight-engine-grid,
    .weight-results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .weight-sub-nav {
        flex-direction: column;
    }
    .weight-matrix-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .weight-toolbar-right {
        flex-wrap: wrap;
    }
}