/* ═══════════════════════════════════
SOLARDOSE — science.css
═══════════════════════════════════ */

/* ── Science Hero ── */
.science-hero {
padding: 140px 48px 80px;
background: linear-gradient(180deg, var(--soft-sand) 0%, var(--warm-cream) 100%);
border-bottom: 1px solid var(--border);
}

.science-hero-inner {
max-width: 720px;
margin: 0 auto;
}

.science-eyebrow {
font-size: 0.75rem;
font-weight: 600;
letter-spacing: 2px;
text-transform: uppercase;
color: var(--sun-gold);
margin-bottom: 16px;
}

.science-title {
font-family: var(--font-display);
font-size: clamp(2rem, 4vw, 3.2rem);
font-weight: 600;
line-height: 1.2;
letter-spacing: -1px;
color: var(--ink);
margin-bottom: 20px;
}

.science-lead {
font-size: 1.05rem;
color: var(--muted);
line-height: 1.7;
max-width: 600px;
}

/* ── Science Content ── */
.science-content {
max-width: 860px;
margin: 0 auto;
padding: 0 48px 80px;
}

/* ── Science Section ── */
.science-section {
display: grid;
grid-template-columns: 64px 1fr;
gap: 32px;
padding: 64px 0;
border-bottom: 1px solid var(--border);
}

.science-section:last-child {
border-bottom: none;
}

.section-number {
font-family: var(--font-display);
font-size: 0.75rem;
font-weight: 600;
color: var(--border);
letter-spacing: 1px;
padding-top: 6px;
}

.section-body h2 {
font-family: var(--font-display);
font-size: 1.6rem;
font-weight: 600;
color: var(--ink);
margin-bottom: 16px;
letter-spacing: -0.5px;
}

.section-body p {
font-size: 0.95rem;
color: var(--muted);
line-height: 1.8;
margin-bottom: 16px;
}

.section-body p:last-of-type {
margin-bottom: 24px;
}

/* ── Chain Diagram ── */
.chain-diagram {
display: flex;
align-items: center;
gap: 8px;
flex-wrap: wrap;
padding: 24px;
background: var(--soft-sand);
border-radius: 14px;
margin: 24px 0;
}

.chain-step {
display: flex;
flex-direction: column;
align-items: center;
gap: 6px;
padding: 12px 16px;
background: #fff;
border-radius: 10px;
border: 1px solid var(--border);
flex: 1;
min-width: 100px;
}

.chain-icon { font-size: 1.4rem; }

.chain-label {
font-size: 0.72rem;
font-weight: 600;
text-align: center;
color: var(--ink);
line-height: 1.3;
}

.chain-arrow {
font-size: 1.2rem;
color: var(--sun-gold);
font-weight: 700;
flex-shrink: 0;
}

/* ── Formula Box ── */
.formula-box {
background: var(--ink);
border-radius: 14px;
padding: 28px 32px;
margin: 24px 0;
}

.formula-label {
font-size: 0.72rem;
font-weight: 600;
letter-spacing: 1.5px;
text-transform: uppercase;
color: var(--muted);
margin-bottom: 16px !important;
}

.formula {
font-family: 'Georgia', serif;
font-size: 1.3rem;
color: var(--sun-gold);
letter-spacing: 0.5px;
margin-bottom: 20px;
line-height: 1.6;
}

.formula-vars {
display: flex;
flex-direction: column;
gap: 8px;
}

.var-item {
display: flex;
align-items: baseline;
gap: 12px;
font-size: 0.85rem;
}

.var {
font-family: 'Georgia', serif;
font-size: 1rem;
color: var(--sun-gold);
min-width: 20px;
}

.var-item span:last-child {
color: var(--muted);
}

/* ── Winter Table ── */
.winter-table {
margin: 24px 0;
border-radius: 12px;
overflow: hidden;
border: 1px solid var(--border);
}

.winter-row {
display: grid;
grid-template-columns: 1fr 80px 1fr;
gap: 16px;
padding: 12px 20px;
font-size: 0.88rem;
border-bottom: 1px solid var(--border);
align-items: center;
}

.winter-row:last-child { border-bottom: none; }

.winter-row.header {
background: var(--soft-sand);
font-size: 0.72rem;
font-weight: 600;
letter-spacing: 1px;
text-transform: uppercase;
color: var(--muted);
}

.winter-short { color: var(--safe-green); font-weight: 500; }
.winter-mid { color: var(--sun-gold); font-weight: 500; }
.winter-long { color: var(--risk-red); font-weight: 500; }

/* ── Fitzpatrick Table ── */
.fitzpatrick-table {
margin: 24px 0;
border-radius: 12px;
overflow: hidden;
border: 1px solid var(--border);
}

.fitz-row {
display: grid;
grid-template-columns: 48px 1fr 100px;
gap: 16px;
padding: 12px 20px;
font-size: 0.88rem;
border-bottom: 1px solid var(--border);
align-items: center;
}

.fitz-row:last-child { border-bottom: none; }

.fitz-row.header {
background: var(--soft-sand);
font-size: 0.72rem;
font-weight: 600;
letter-spacing: 1px;
text-transform: uppercase;
color: var(--muted);
}

.fitz-type {
font-family: var(--font-display);
font-weight: 700;
font-size: 1rem;
color: var(--ink);
}

.fitz-swatch {
display: inline-flex;
align-items: center;
gap: 10px;
padding: 4px 12px;
border-radius: 100px;
font-size: 0.82rem;
font-weight: 500;
color: var(--ink);
}

.fitz-time {
font-family: var(--font-display);
font-weight: 600;
color: var(--amber);
}

.table-note {
font-size: 0.75rem;
color: var(--muted);
font-style: italic;
margin-top: 10px !important;
}

/* ── Stat Grid ── */
.stat-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 16px;
margin: 24px 0;
}

.stat-card {
display: flex;
flex-direction: column;
gap: 8px;
padding: 24px 20px;
background: var(--soft-sand);
border-radius: 14px;
border: 1px solid var(--border);
}

.stat-number {
font-family: var(--font-display);
font-size: 2.2rem;
font-weight: 700;
color: var(--sun-gold);
line-height: 1;
}

.stat-label {
font-size: 0.78rem;
color: var(--muted);
line-height: 1.5;
}

/* ── Reference Tag ── */
.ref-tag {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 8px 14px;
background: var(--soft-sand);
border-radius: 8px;
font-size: 0.78rem;
color: var(--muted);
margin-top: 8px;
}

.ref-tag a {
color: var(--amber);
text-decoration: none;
font-weight: 500;
transition: color var(--transition);
}

.ref-tag a:hover { color: var(--ink); }

/* ── Reference List ── */
.references .section-body h2 {
margin-bottom: 24px;
}

.ref-list {
list-style: none;
counter-reset: ref-counter;
display: flex;
flex-direction: column;
gap: 16px;
}

.ref-list li {
counter-increment: ref-counter;
display: flex;
gap: 16px;
font-size: 0.88rem;
color: var(--muted);
line-height: 1.6;
padding: 16px 20px;
background: var(--soft-sand);
border-radius: 10px;
}

.ref-list li::before {
content: counter(ref-counter);
font-family: var(--font-display);
font-weight: 700;
color: var(--sun-gold);
min-width: 20px;
}

.ref-list a {
color: var(--amber);
text-decoration: none;
font-weight: 500;
}

.ref-list a:hover { text-decoration: underline; }

/* ── CTA ── */
.science-cta {
text-align: center;
padding: 80px 48px;
background: var(--soft-sand);
border-top: 1px solid var(--border);
}

.science-cta p {
font-family: var(--font-display);
font-size: 1.4rem;
color: var(--ink);
margin-bottom: 24px;
}

/* ── Responsive ── */
@media (max-width: 900px) {
.science-hero { padding: 100px 20px 48px; }
.science-content { padding: 0 20px 48px; }

.science-section {
grid-template-columns: 1fr;
gap: 16px;
padding: 40px 0;
}

.section-number { display: none; }

.chain-diagram {
flex-direction: column;
align-items: stretch;
}

.chain-arrow { transform: rotate(90deg); text-align: center; }

.stat-grid { grid-template-columns: 1fr; }

.winter-row,
.fitz-row { grid-template-columns: 1fr 1fr; }

.winter-row.header span:last-child,
.fitz-row.header span:last-child { display: none; }

.science-cta { padding: 48px 20px; }
}