/* PMBOK Matrix Table */
.matrix-wrapper {
    max-width: 960px;
}

.matrix {
    width: 100%;
    border-collapse: separate;
    border-spacing: 3px;
    table-layout: fixed;
}

/* Header row */
.matrix thead th {
    padding: 10px 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    text-align: center;
    white-space: nowrap;
}
.matrix thead th:first-child {
    width: 100px;
    background: transparent;
}

/* Knowledge area label column */
.matrix tbody td:first-child {
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    vertical-align: middle;
    border-radius: var(--radius);
    white-space: nowrap;
    position: relative;
}

/* Process cells */
.matrix .cell-process {
    padding: 4px 6px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    vertical-align: middle;
    text-align: left;
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    min-height: 32px;
}
.matrix .cell-process:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
}

/* Process cell content */
.cell-content {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: flex-start;
}
.cell-color-bar {
    width: 3px;
    height: 20px;
    border-radius: 2px;
    flex-shrink: 0;
}
.cell-name {
    font-size: 12px;
    line-height: 1.3;
    color: var(--text-primary);
}
.cell-heat {
    width: 6px; height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
    position: absolute;
    bottom: 4px;
    right: 4px;
}
.cell-heat.high { background: var(--accent-red); }
.cell-heat.medium { background: var(--accent-orange); }

/* Empty cells */
.matrix .cell-empty {
    background: var(--bg-primary);
    border: 1px solid transparent;
    border-radius: var(--radius);
}

/* Multi-process cells */
.matrix .cell-multi {
    padding: 2px;
    vertical-align: top;
    background: transparent;
}
.matrix .cell-multi .cell-process {
    display: block;
    margin-bottom: 3px;
}
.matrix .cell-multi .cell-process:last-child {
    margin-bottom: 0;
}

/* Row hover highlight */
.matrix tbody tr:hover td {
    background: var(--bg-tertiary);
}
.matrix tbody tr:hover .cell-process {
    background: var(--bg-hover);
}
.matrix tbody tr:hover .cell-empty {
    background: var(--bg-primary);
}

/* Selected cell */
.matrix .cell-process.selected {
    border-color: var(--accent-blue);
    background: rgba(88,166,255,0.15);
}

/* Performance Domain Grid */
.perf-domains-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.perf-domain-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.perf-domain-card:hover {
    border-color: var(--accent-blue);
    background: var(--bg-hover);
}
.perf-domain-card.selected {
    border-color: var(--accent-blue);
}
.pd-card-accent {
    width: 4px;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    border-radius: var(--radius) 0 0 var(--radius);
}
.pd-card-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    padding-left: 8px;
}
.pd-card-desc {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.4;
    padding-left: 8px;
}

/* Performance Domain Detail Cards */
.perf-detail-wrapper {
    max-width: 960px;
}
.perf-detail-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.perf-detail-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.perf-detail-card:hover {
    border-color: var(--accent-blue);
}
.perf-detail-card .pd-card-accent {
    width: 4px;
}
.pd-detail-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    padding-left: 10px;
}
.pd-detail-goals {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 10px;
    margin-bottom: 8px;
}
.pd-detail-mnemonic {
    font-size: 13px;
    color: var(--accent-purple);
    font-weight: 600;
    padding: 6px 10px;
    background: rgba(188,140,255,0.1);
    border-radius: var(--radius);
    margin-left: 10px;
    display: inline-block;
}

/* Essay Timeline */
.essay-wrapper {
    max-width: 960px;
}
.essay-timeline {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.essay-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition);
    cursor: pointer;
}
.essay-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
}
.essay-year {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-blue);
    white-space: nowrap;
    min-width: 64px;
    text-align: center;
}
.essay-title {
    font-size: 14px;
    flex: 1;
}
.essay-difficulty {
    display: flex;
    gap: 2px;
}
.essay-star {
    width: 12px; height: 12px;
    border-radius: 50%;
}
.essay-star.filled { background: var(--accent-orange); }
.essay-star.empty { background: var(--bg-tertiary); }
.essay-area {
    font-size: 11px;
    color: var(--text-muted);
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    white-space: nowrap;
}

/* Responsive */
@media (max-width: 900px) {
    .perf-domains-grid { grid-template-columns: repeat(2, 1fr); }
    .perf-detail-cards { grid-template-columns: 1fr; }
    .matrix .cell-name { font-size: 11px; }
    .matrix tbody td:first-child { font-size: 12px; width: 80px; }
}