/* ===============================
   STYLES-SCIENCE.CSS
   Styles for science.html pages:
   concept grid, HRV visualization,
   mechanism steps, research grid,
   innovation grid, FAQ list
   =============================== */

/* ===============================
   SCIENCE PAGE ADDITIONS (V16)
   =============================== */

.slate-bg {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(255, 182, 39, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.concept-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.concept-text p {
    margin-bottom: 16px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.concept-text strong {
    color: var(--color-text);
}

.hrv-visualization {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.hrv-state {
    background: var(--color-surface);
    padding: 20px;
    border-radius: 16px;
    border: 1px solid rgba(255, 182, 39, 0.15);
}

.hrv-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.hrv-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.hrv-indicator.healthy {
    background: var(--color-text-secondary);
}

.hrv-indicator.stressed {
    background: #dc3545;
}

.hrv-indicator.coherent {
    background: var(--color-success);
}

.hrv-label {
    font-weight: 600;
    font-size: 0.95rem;
}

.hrv-label.healthy {
    color: var(--color-text-secondary);
}

.hrv-label.stressed {
    color: #dc3545;
}

.hrv-label.coherent {
    color: var(--color-success);
}

.hrv-description {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-left: auto;
}

.hrv-chart {
    width: 100%;
    height: 50px;
}

.hrv-line-healthy {
    fill: none;
    stroke: var(--color-text-secondary);
    stroke-width: 2;
}

.hrv-line-stressed {
    fill: none;
    stroke: #dc3545;
    stroke-width: 2;
}

.hrv-line-coherent {
    fill: none;
    stroke: var(--color-success);
    stroke-width: 2;
}

.hrv-explain {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
    line-height: 1.4;
}

.mechanism-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.mech-step {
    background: var(--color-bg);
    padding: 28px;
    border-radius: 16px;
}

.mech-number {
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    color: var(--color-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.mech-step h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.mech-step p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.research-card {
    background: var(--color-surface);
    padding: 28px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(255, 182, 39, 0.15);
}

.research-number {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-dark);
    display: block;
}

.research-metric {
    font-weight: 600;
    font-size: 1rem;
    display: block;
    margin: 8px 0;
}

.research-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.innovation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.innovation-card {
    background: var(--color-bg);
    padding: 28px;
    border-radius: 16px;
}

.innovation-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.innovation-card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

/* ===============================
   RESPONSIVE - Science
   =============================== */

@media (max-width: 900px) {
    .concept-grid {
        grid-template-columns: 1fr;
    }
}