/* The Lean Startup - Book-Specific Styles */

:root {
    --accent-color: #2563eb;
    --accent-color-dark: #1d4ed8;
    --accent-gradient: linear-gradient(135deg, #2563eb 0%, #0891b2 100%);
    --section-title-bg: #2563eb;
    --key-box-color: #2563eb;
    --key-box-bg: #eff6ff;
    --verse-bg: #f0f9ff;
    --intro-bg: #f8fafc;
}

/* Central node with startup gradient */
.central-node {
    background: var(--accent-gradient);
}

/* Chapter cards hover effect */
.chapter-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 10px 40px rgba(37, 99, 235, 0.15);
}

.chapter-card:hover .chapter-number {
    color: var(--accent-color);
}

/* Framework boxes for key methodologies */
.framework-box {
    background: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 100%);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.framework-box h4 {
    color: var(--accent-color-dark);
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Methodology box for Build-Measure-Learn loop etc */
.methodology-box {
    background: #f8fafc;
    border: 2px solid var(--accent-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    text-align: center;
}

.methodology-box h4 {
    color: var(--accent-color-dark);
    margin-top: 0;
    font-size: 1.2rem;
}

/* Case study boxes */
.case-study {
    background: linear-gradient(135deg, #fef3c7 0%, #fef9c3 100%);
    border-left: 4px solid #f59e0b;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.case-study h4 {
    color: #b45309;
    margin-top: 0;
    margin-bottom: 0.75rem;
}

.case-study .company {
    font-weight: 600;
    color: #92400e;
}

/* Metric boxes */
.metric-box {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border-left: 4px solid #059669;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.metric-box h4 {
    color: #047857;
    margin-top: 0;
    margin-bottom: 0.75rem;
}

/* Warning/anti-pattern boxes */
.warning-box {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-left: 4px solid #dc2626;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.warning-box h4 {
    color: #b91c1c;
    margin-top: 0;
    margin-bottom: 0.75rem;
}

/* Quote box styling */
.quote-box {
    background: var(--verse-bg);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    font-size: 1.1rem;
    color: #334155;
    border-radius: 0 8px 8px 0;
}

.quote-box .attribution {
    font-style: normal;
    font-size: 0.9rem;
    color: #64748b;
    margin-top: 0.75rem;
}

/* Insight box */
.insight-box {
    background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
    border-left: 4px solid #7c3aed;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.insight-box h4 {
    color: #6d28d9;
    margin-top: 0;
    margin-bottom: 0.75rem;
}

/* Definition box */
.definition-box {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 1.25rem;
    margin: 1.5rem 0;
}

.definition-box .term {
    font-weight: 700;
    color: var(--accent-color-dark);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.definition-box .meaning {
    color: #475569;
    line-height: 1.6;
}

/* Process steps */
.process-steps {
    background: #f8fafc;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.process-steps h4 {
    color: var(--accent-color-dark);
    margin-top: 0;
    margin-bottom: 1rem;
}

.process-steps ol {
    margin: 0;
    padding-left: 1.5rem;
}

.process-steps li {
    margin-bottom: 0.75rem;
    color: #334155;
}

.process-steps li:last-child {
    margin-bottom: 0;
}

/* Comparison table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.comparison-table th {
    background: var(--accent-color);
    color: white;
    padding: 0.75rem 1rem;
    text-align: left;
}

.comparison-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.comparison-table tr:nth-child(even) {
    background: #f8fafc;
}

/* Cycle diagram styling */
.cycle-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.cycle-step {
    background: var(--accent-gradient);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    min-width: 100px;
}

.cycle-arrow {
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: bold;
}

/* Key metrics grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.metric-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.metric-card .metric-name {
    font-weight: 600;
    color: var(--accent-color-dark);
    margin-bottom: 0.5rem;
}

.metric-card .metric-description {
    font-size: 0.9rem;
    color: #64748b;
}