/* =========================================================
   about.css — About page styles
   ========================================================= */

.about-page {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

/* ---- hero ---- */
.about-hero {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding: var(--space-2xl) var(--space-lg);
}

.about-hero__icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
    border: 2px solid #A7F3D0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--green-dark);
    margin: 0 auto var(--space-lg);
}

.about-hero__title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.about-hero__subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ---- content sections ---- */
.about-section {
    margin-bottom: var(--space-xl);
}

.about-section__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border);
}

.about-section__title i {
    color: var(--green-dark);
    font-size: 1rem;
}

.about-section__body {
    font-size: 0.93rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: var(--space-md);
}

.about-section__body:last-child {
    margin-bottom: 0;
}

.about-section__note {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--space-md);
}

.about-link {
    color: var(--green-dark);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: var(--transition);
}

.about-link:hover {
    color: #047857;
}

/* =========================================================
   METHODOLOGY STEPS
   ========================================================= */

.method-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.method-step {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.method-step__num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--green-dark);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.method-step__content h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.method-step__content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* =========================================================
   PAYE BRACKETS TABLE
   ========================================================= */

.about-table-wrap {
    overflow-x: auto;
    margin-bottom: var(--space-sm);
}

.about-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.about-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
    background: #F9FAFB;
}

.about-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.about-table tbody tr:hover {
    background: #F0FDF4;
}

.about-table__rate {
    font-weight: 700;
    color: var(--color-paye);
}

/* =========================================================
   DATA SOURCES GRID
   ========================================================= */

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-md);
}

.source-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-md);
    background: #F9FAFB;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.source-item__icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: #ECFDF5;
    color: var(--green-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.source-item strong {
    display: block;
    font-size: 0.88rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.source-item p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* =========================================================
   TECH STACK GRID
   ========================================================= */

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.tech-item {
    padding: var(--space-md);
    background: #F9FAFB;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.tech-item strong {
    font-size: 0.88rem;
    color: var(--text-primary);
}

.tech-item span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* =========================================================
   TAX DISCLAIMER PARTIAL
   ========================================================= */

.tax-disclaimer {
    margin-bottom: var(--space-xl);
}

.tax-disclaimer__inner {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-lg);
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: var(--radius-md);
}

.tax-disclaimer__icon {
    color: #D97706;
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.tax-disclaimer__text {
    font-size: 0.87rem;
    color: #92400E;
    line-height: 1.65;
}

.tax-disclaimer__text strong {
    color: #78350F;
}

/* =========================================================
   CTA
   ========================================================= */

.about-cta {
    text-align: center;
    padding: var(--space-xl) 0;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 767px) {
    .about-hero__title {
        font-size: 1.7rem;
    }

    .method-step {
        flex-direction: row;
        gap: var(--space-md);
    }

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