/* ============================================
   Clean Technology — Style System
   Informational / Economist Aesthetic
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #1a5c3a;
    --color-primary-light: #2a7a50;
    --color-primary-dark: #0f3d26;
    --color-bg: #fafaf8;
    --color-bg-alt: #f3f2ee;
    --color-bg-dark: #1a1f2e;
    --color-text: #2c2c2c;
    --color-text-light: #6b6b6b;
    --color-text-muted: #9a9a9a;
    --color-border: #e2e0da;
    --color-border-light: #eeedea;
    --color-white: #ffffff;
    --color-accent: #c4a35a;

    --font-serif: 'EB Garamond', 'Georgia', 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --container-max: 1200px;
    --container-narrow: 800px;
    --header-height: 72px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    color: inherit;
    text-decoration: none;
}

ul { list-style: none; }

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.75rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 250, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-serif);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 2px;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--color-text-light);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 0.25rem 0;
    position: relative;
    transition: color 0.2s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

.nav-links a.active::after,
.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text);
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    padding-top: calc(var(--header-height) + 5rem);
    padding-bottom: 5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
    align-items: center;
}

.hero-eyebrow {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    margin-bottom: 1.25rem;
}

.hero h1 {
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.data-graphic {
    width: 100%;
    max-width: 500px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 1.5rem;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
}

.hero-chart {
    width: 100%;
    height: auto;
}

.chart-label {
    font-family: var(--font-sans);
    font-size: 9px;
    fill: var(--color-text-muted);
}

.chart-title {
    font-family: var(--font-serif);
    font-size: 12px;
    fill: var(--color-text);
    font-weight: 500;
}

/* ============================================
   METRICS
   ============================================ */
.metrics {
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 3.5rem 0;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.metric-card {
    text-align: center;
    padding: 1rem;
}

.metric-value {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 500;
    color: var(--color-primary);
    line-height: 1;
}

.metric-unit {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-left: 0.15rem;
}

.metric-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
    line-height: 1.4;
}

/* ============================================
   OVERVIEW SECTION (Home)
   ============================================ */
.overview-section {
    padding: 5rem 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.overview-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.overview-text h2 {
    margin-bottom: 1.5rem;
}

.overview-text p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    line-height: 1.8;
}

.sidebar-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 1.75rem;
}

.sidebar-card h4 {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
}

.trend-list li {
    display: flex;
    align-items: start;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--color-text-light);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border-light);
    line-height: 1.4;
}

.trend-list li:last-child {
    border-bottom: none;
}

.trend-indicator {
    display: inline-block;
    min-width: 8px;
    height: 8px;
    margin-top: 4px;
    border-radius: 1px;
}

.trend-up {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 8px solid var(--color-primary);
    border-radius: 0;
    margin-top: 5px;
}

.trend-neutral {
    width: 10px;
    height: 2px;
    background: var(--color-accent);
    margin-top: 8px;
}

/* ============================================
   INSIGHTS / ARTICLES
   ============================================ */
.insights {
    padding: 5rem 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.section-header h2 {
    font-size: 1.5rem;
}

.section-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    transition: opacity 0.2s;
}

.section-link:hover {
    opacity: 0.7;
}

.insights-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.insight-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.insight-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(26, 92, 58, 0.06);
}

.insight-featured {
    grid-column: 1 / -1;
}

.insight-tag {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    background: rgba(26, 92, 58, 0.08);
    padding: 0.25rem 0.625rem;
    border-radius: 2px;
    margin-bottom: 1rem;
}

.insight-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    line-height: 1.35;
}

.insight-card p {
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.insight-meta {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.meta-divider {
    margin: 0 0.5rem;
}

/* ============================================
   SECTOR PREVIEW (Home) & EXPERTISE CARDS
   ============================================ */
.sector-preview {
    padding: 5rem 0;
    background: var(--color-bg-alt);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.expertise-card {
    display: block;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    text-decoration: none;
}

.expertise-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    border-color: var(--color-primary);
}

.expertise-icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
    margin-bottom: 1.25rem;
}

.expertise-icon svg {
    width: 100%;
    height: 100%;
}

.expertise-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.expertise-card p {
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ============================================
   DATA SNAPSHOT (Home)
   ============================================ */
.data-snapshot {
    padding: 5rem 0;
}

.snapshot-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.snapshot-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2rem;
}

.snapshot-card h4 {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
}

.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.bar-row {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1rem;
    align-items: center;
}

.bar-label {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    text-align: right;
}

.bar-track {
    background: var(--color-bg-alt);
    border-radius: 2px;
    height: 22px;
    position: relative;
}

.bar-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 2px;
    position: relative;
    transition: width 1s ease;
}

.bar-fill-muted {
    background: var(--color-text-muted);
    opacity: 0.4;
}

.bar-fill::after {
    content: attr(data-value);
    position: absolute;
    right: -4px;
    top: 50%;
    transform: translate(100%, -50%);
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-text);
    padding-left: 6px;
    white-space: nowrap;
}

/* ============================================
   DONATE
   ============================================ */
.donate {
    padding: 4.5rem 0;
    background: var(--color-bg-dark);
}

.donate-content {
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
}

.donate-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-white);
}

.donate-content p {
    font-size: 0.9375rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 3.5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
}

.footer-brand .nav-logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: var(--color-white);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.875rem;
    max-width: 280px;
}

.footer-links h4 {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 1.25rem;
}

.footer-links ul li {
    margin-bottom: 0.625rem;
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.65);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.3);
}

/* ============================================
   PAGE HEADER (inner pages)
   ============================================ */
.page-header {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 3.5rem;
    border-bottom: 1px solid var(--color-border);
}

.page-eyebrow {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.page-header h1 {
    max-width: 700px;
    margin-bottom: 1.25rem;
}

.page-subtitle {
    font-size: 1.0625rem;
    color: var(--color-text-light);
    max-width: 620px;
    line-height: 1.7;
}

/* ============================================
   RESEARCH PAGE
   ============================================ */
.filter-bar {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-white);
    position: sticky;
    top: var(--header-height);
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: 0.25rem;
}

.filter-tab {
    background: none;
    border: 1px solid transparent;
    padding: 0.5rem 1.25rem;
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--color-text-light);
    cursor: pointer;
    border-radius: 2px;
    transition: all 0.2s ease;
}

.filter-tab:hover {
    color: var(--color-text);
    background: var(--color-bg-alt);
}

.filter-tab.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(26, 92, 58, 0.04);
    font-weight: 500;
}

.research-list {
    padding: 3rem 0 5rem;
}

.research-featured {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    align-items: center;
}

.research-item-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.research-featured h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.research-featured p {
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
}

.research-key-points {
    background: var(--color-bg-alt);
    border-radius: 3px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.research-key-points h4 {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}

.research-key-points ul {
    list-style: none;
}

.research-key-points li {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    padding: 0.35rem 0;
    padding-left: 1rem;
    position: relative;
}

.research-key-points li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7rem;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
}

.research-read-time {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.research-item-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.research-chart {
    width: 100%;
    height: auto;
    max-width: 300px;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.research-grid .research-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2rem;
    transition: border-color 0.3s ease;
    cursor: pointer;
}

.research-grid .research-item:hover {
    border-color: var(--color-primary);
}

.research-grid .research-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    line-height: 1.35;
}

.research-grid .research-item p {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.research-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

.topic {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: 0.2rem 0.6rem;
    border-radius: 2px;
    letter-spacing: 0.02em;
}

/* ============================================
   SECTORS PAGE
   ============================================ */
.sector-detail {
    padding: 5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.sector-alt {
    background: var(--color-bg-alt);
}

.sector-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.sector-icon {
    width: 44px;
    height: 44px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.sector-icon svg {
    width: 100%;
    height: 100%;
}

.sector-header h2 {
    margin-bottom: 0.25rem;
}

.sector-tagline {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    font-style: italic;
    font-family: var(--font-serif);
}

.sector-content {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 3.5rem;
    align-items: start;
}

.sector-text p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.sector-data-block {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.sector-alt .sector-data-block {
    background: var(--color-white);
}

.sector-data-block h4 {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.data-points-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.data-point {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.data-point-value {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
    line-height: 1.2;
}

.data-point-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.3;
}

.sector-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tech-list li {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    padding: 0.4rem 0;
    padding-left: 1rem;
    position: relative;
    border-bottom: 1px solid var(--color-border-light);
}

.tech-list li:last-child {
    border-bottom: none;
}

.tech-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.82rem;
    width: 5px;
    height: 1px;
    background: var(--color-primary);
}

.related-list li {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--color-border-light);
}

.related-list li:last-child {
    border-bottom: none;
}

.related-list a {
    font-size: 0.8125rem;
    color: var(--color-primary);
    font-weight: 500;
    transition: opacity 0.2s;
}

.related-list a:hover {
    opacity: 0.7;
}

/* Cross-cutting themes */
.cross-cutting {
    padding: 5rem 0;
}

.themes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.theme-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2rem;
}

.theme-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.theme-card p {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.theme-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-primary);
    transition: opacity 0.2s;
}

.theme-link:hover {
    opacity: 0.7;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-mission {
    padding: 5rem 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    line-height: 1.8;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.value-block {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.value-number {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--color-primary);
    line-height: 1;
    min-width: 2rem;
    opacity: 0.6;
}

.value-block h4 {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.value-block p {
    font-size: 0.875rem;
}

/* Coverage */
.about-coverage {
    padding: 5rem 0;
    background: var(--color-bg-alt);
}

.coverage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.coverage-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 2rem;
}

.coverage-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.625rem;
}

.coverage-item p {
    font-size: 0.875rem;
}

/* Methodology */
.about-methodology {
    padding: 5rem 0;
}

.methodology-content h2 {
    margin-bottom: 1rem;
}

.methodology-content > p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 800px;
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.methodology-item {
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: 3px;
    background: var(--color-bg-alt);
}

.methodology-item h4 {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.methodology-item p {
    font-size: 0.8125rem;
}

/* Contact section (About page) */
.about-contact {
    padding: 5rem 0;
    background: var(--color-bg-alt);
}

.contact-simple-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.contact-simple-text h2 {
    margin-bottom: 0.75rem;
}

.contact-simple-text > p {
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-detail h4 {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: 0.35rem;
}

.contact-detail a {
    color: var(--color-primary);
    font-size: 0.9375rem;
    font-weight: 500;
}

.contact-detail p {
    font-size: 0.8125rem;
    margin-bottom: 0.25rem;
}

.contact-form-wrapper h2,
.contact-form-wrapper h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.375rem;
    letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 2px;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--color-text);
    background: var(--color-white);
    outline: none;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' fill='none' stroke='%236b6b6b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 300px;
    color: var(--color-primary);
    gap: 1rem;
}

.form-success h3 {
    color: var(--color-primary);
}

.form-success p {
    max-width: 300px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding-top: calc(var(--header-height) + 3rem);
    }

    .hero-visual {
        order: -1;
    }

    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .overview-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .sector-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .research-featured {
        grid-template-columns: 1fr;
    }

    .contact-simple-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.3s ease;
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .hero {
        padding-top: calc(var(--header-height) + 2.5rem);
        padding-bottom: 3rem;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

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

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

    .data-points-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .hero-actions {
        flex-direction: column;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .filter-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .filter-tabs::-webkit-scrollbar {
        display: none;
    }

    .section-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .bar-row {
        grid-template-columns: 90px 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }

    .metric-value {
        font-size: 2.25rem;
    }

    .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .data-points-grid {
        grid-template-columns: 1fr;
    }

    .bar-row {
        grid-template-columns: 80px 1fr;
        gap: 0.5rem;
    }

    .bar-label {
        font-size: 0.75rem;
    }
}