/* On the Origin of Species - Book-Specific Styles */

:root {
    --accent-color: #059669;
    --accent-color-dark: #047857;
    --accent-gradient: linear-gradient(135deg, #059669 0%, #0d9488 100%);
    --section-title-bg: #059669;
    --key-box-color: #059669;
    --key-box-bg: #ecfdf5;
    --verse-bg: #f0fdf4;
    --intro-bg: #f0fdf4;
}

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

/* Chapter cards hover effect */
.chapter-card:hover {
    border-color: var(--accent-color);
}

/* Scientific observation boxes */
.observation-box {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
    border-left: 4px solid #10b981;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.observation-box h4 {
    color: #047857;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Evidence boxes */
.evidence-box {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-left: 4px solid #f59e0b;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.evidence-box h4 {
    color: #b45309;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Key argument boxes */
.argument-box {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-left: 4px solid #3b82f6;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.argument-box h4 {
    color: #1d4ed8;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Definition boxes */
.definition-box {
    background: #faf5ff;
    border: 2px solid #c084fc;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.definition-box h4 {
    color: #7c3aed;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Example boxes for Darwin's examples */
.example-box {
    background: #fff7ed;
    border-left: 4px solid #fb923c;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.example-box h4 {
    color: #c2410c;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Quote box styling */
.quote-box {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: #475569;
}

.quote-box .attribution {
    margin-top: 1rem;
    font-style: normal;
    font-weight: 600;
    color: var(--accent-color-dark);
}

/* Difficulty/objection boxes */
.objection-box {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-left: 4px solid #ef4444;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.objection-box h4 {
    color: #dc2626;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Response/solution boxes */
.response-box {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-left: 4px solid #22c55e;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.response-box h4 {
    color: #16a34a;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Insight boxes */
.insight-box {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border: 2px solid #10b981;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.insight-box h4 {
    color: #047857;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Lists within boxes */
.observation-box ul,
.evidence-box ul,
.argument-box ul,
.example-box ul {
    margin: 0.5rem 0 0 1.5rem;
    padding: 0;
}

.observation-box li,
.evidence-box li,
.argument-box li,
.example-box li {
    margin-bottom: 0.5rem;
}