/* ============================================================
   research.cy Design System — Swiss / Brutalist
   Fonts: Space Grotesk (display) + Inter (body)
   ============================================================ */

/* --- Custom Properties ------------------------------------ */
:root {
    --bg: #ffffff;
    --fg: #000000;
    --accent: #2A52BE;
    --grid-line: #000000;
    --border-width: 1px;
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --radius: 0;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--fg);
    background: var(--bg);
    overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* --- Typography ------------------------------------------- */
.display-text {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: -0.03em;
    text-transform: uppercase;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    padding-bottom: var(--spacing-sm);
    border-bottom: var(--border-width) solid var(--grid-line);
    margin-bottom: var(--spacing-md);
}

.lead {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 300;
    line-height: 1.5;
    max-width: 40ch;
}

.big-number {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    opacity: 0.08;
    position: absolute;
    top: -0.25rem;
    left: 0;
    line-height: 1;
    user-select: none;
    pointer-events: none;
}

/* --- Layout ----------------------------------------------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.b-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .b-grid { grid-template-columns: repeat(12, 1fr); }
    .b-cell-6  { grid-column: span 6; }
    .b-cell-4  { grid-column: span 4; }
    .b-cell-3  { grid-column: span 3; }
    .b-cell-12 { grid-column: span 12; }
    .b-cell-8  { grid-column: span 8; }
}

section {
    padding: var(--spacing-xl) 0;
    border-bottom: var(--border-width) solid var(--grid-line);
}

/* --- Buttons ---------------------------------------------- */
.btn {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--border-width) solid var(--fg);
    background: var(--fg);
    color: var(--bg);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    text-align: center;
}

.btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--fg);
}

.btn-outline:hover {
    background: var(--fg);
    color: var(--bg);
}

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-accent:hover {
    background: var(--fg);
    border-color: var(--fg);
}

.btn-disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-lg {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
}

/* --- Header ----------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg);
    border-bottom: var(--border-width) solid var(--grid-line);
    padding: var(--spacing-sm) 0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links a {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: color var(--transition);
}

.nav-links a:hover { color: var(--accent); }

.lang-switch {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.lang-switch a {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--grid-line);
    transition: background var(--transition), color var(--transition);
}

.lang-switch a:hover { background: #f5f5f5; }
.lang-switch a.lang-active { background: var(--fg); color: var(--bg); }

.accent-letter { color: var(--accent); }

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    font-family: var(--font-display);
}

@media (max-width: 767px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: var(--border-width) solid var(--grid-line);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    .nav-links.open { display: flex; }
    .mobile-toggle { display: block; }
}

/* --- Hero ------------------------------------------------- */
.hero {
    padding: var(--spacing-xl) 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 900px;
}

.hero-sub {
    margin-top: var(--spacing-md);
    max-width: 60ch;
}

.search-sim {
    margin-top: var(--spacing-lg);
    display: flex;
    align-items: stretch;
    max-width: 600px;
    border: 2px solid var(--fg);
}

.search-sim-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    border: none;
    outline: none;
    background: transparent;
    color: var(--fg);
}

.search-sim-input::placeholder {
    color: rgba(0,0,0,0.35);
}

.search-sim .btn {
    border: none;
    white-space: nowrap;
}

.hero-cta {
    margin-top: var(--spacing-md);
}

/* --- Ticker ----------------------------------------------- */
.ticker {
    background: var(--fg);
    color: var(--bg);
    overflow: hidden;
    border-bottom: var(--border-width) solid var(--grid-line);
    padding: var(--spacing-xs) 0;
}

.ticker-track {
    display: flex;
    width: max-content;
    animation: ticker 20s linear infinite;
}

.ticker-item {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    white-space: nowrap;
    padding: 0 var(--spacing-md);
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* --- Problem Section (inverted) --------------------------- */
.section-dark {
    background: var(--fg);
    color: var(--bg);
    border-bottom-color: rgba(255,255,255,0.2);
}

.section-dark .section-title {
    border-bottom-color: rgba(255,255,255,0.2);
}

.pain-card {
    border: 1px solid rgba(255,255,255,0.15);
    padding: var(--spacing-md);
    position: relative;
}

.pain-card .pain-number {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    opacity: 0.06;
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-sm);
    line-height: 1;
}

.pain-card p {
    font-size: 1.1rem;
    line-height: 1.5;
    max-width: 35ch;
}

/* --- Jobs Demo Section ------------------------------------ */
.jobs-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    border: var(--border-width) solid var(--grid-line);
    margin-bottom: var(--spacing-md);
}

.jobs-tab {
    flex: 1;
    min-width: 140px;
    padding: var(--spacing-sm) var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    cursor: pointer;
    border: none;
    border-right: var(--border-width) solid var(--grid-line);
    background: transparent;
    transition: background var(--transition), color var(--transition);
}

.jobs-tab:last-child { border-right: none; }
.jobs-tab:hover { background: #f5f5f5; }
.jobs-tab.active {
    background: var(--fg);
    color: var(--bg);
}

.job-panel {
    display: none;
    border: var(--border-width) solid var(--grid-line);
    padding: var(--spacing-md);
    min-height: 400px;
}

.job-panel.active { display: block; }

/* Job A: Dedup */
.dedup-demo {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    align-items: start;
}

@media (min-width: 768px) {
    .dedup-demo {
        grid-template-columns: 1fr auto 1fr;
    }
}

.dedup-sources {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.source-card {
    border: 1px solid #ccc;
    padding: var(--spacing-sm);
    opacity: 0.5;
    position: relative;
}

.source-card .source-badge {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #888;
    margin-bottom: var(--spacing-xs);
}

.dedup-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--accent);
    padding: var(--spacing-sm);
}

.merged-card {
    border: 2px solid var(--accent);
    padding: var(--spacing-md);
    position: relative;
}

.merged-badge {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.merged-card h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.merged-card .price {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.merged-sources-list {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    color: #666;
}

.dedup-savings {
    margin-top: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}

/* Job B: Price chart */
.chart-container {
    max-width: 700px;
    margin: 0 auto;
}

.chart-caption {
    margin-top: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    text-align: center;
}

/* Job C: Map */
#district-map {
    width: 100%;
    height: 400px;
    border: var(--border-width) solid var(--grid-line);
}

.map-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.map-legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.legend-dot--school   { background: var(--accent); }
.legend-dot--hospital { background: #c0392b; }
.legend-dot--beach    { background: #27ae60; }
.legend-dot--construction { background: #e67e22; }

/* Job D: Verification */
.verify-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .verify-grid { grid-template-columns: 1fr 1fr; }
}

.verify-card {
    border: 2px solid #ccc;
    padding: var(--spacing-md);
}

.verify-card--ok {
    border-color: #27ae60;
}

.verify-card--warn {
    border-color: #ccc;
    opacity: 0.7;
}

.verify-badge {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.verify-badge--ok {
    background: #27ae60;
    color: #fff;
}

.verify-badge--warn {
    background: #bbb;
    color: #fff;
}

.verify-card h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.verify-card .seller-name {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: var(--spacing-sm);
}

.verify-card .details {
    font-size: 0.9rem;
    line-height: 1.6;
}

.verify-warning {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: #fff3cd;
    border-left: 3px solid #e67e22;
    font-size: 0.85rem;
    color: #856404;
}

/* --- How It Works ----------------------------------------- */
.step-card {
    position: relative;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + 2rem);
    border: var(--border-width) solid var(--grid-line);
}

.step-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}

/* --- Value Props ------------------------------------------ */
.value-card {
    position: relative;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + 2.5rem);
    border: var(--border-width) solid var(--grid-line);
    min-height: 180px;
}

.value-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--spacing-xs);
}

.value-card p {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.5;
}

.value-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

@media (min-width: 768px) {
    .value-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* --- FAQ Accordion ---------------------------------------- */
.faq-item {
    border: var(--border-width) solid var(--grid-line);
    margin-bottom: -1px;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    text-align: left;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background var(--transition);
}

.faq-question:hover { background: #f5f5f5; }

.faq-question .faq-icon {
    font-size: 1.25rem;
    transition: transform var(--transition);
}

.faq-item.open .faq-icon { transform: rotate(45deg); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 var(--spacing-md);
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #444;
}

/* --- CTA Section (inverted) ------------------------------- */
.cta-section {
    text-align: center;
}

.cta-section .section-title {
    border-bottom: none;
}

.cta-form {
    display: flex;
    max-width: 500px;
    margin: var(--spacing-md) auto 0;
    border: 2px solid var(--bg);
}

.section-dark .cta-form {
    border-color: rgba(255,255,255,0.5);
}

.cta-form input[type="email"] {
    flex: 1;
    padding: var(--spacing-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    border: none;
    outline: none;
    background: transparent;
    color: var(--bg);
}

.cta-form input[type="email"]::placeholder {
    color: rgba(255,255,255,0.4);
}

.cta-form .btn {
    border: none;
    background: var(--accent);
    color: #fff;
    white-space: nowrap;
}

.cta-form .btn:hover {
    background: #fff;
    color: var(--fg);
}

.waitlist-counter {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    opacity: 0.7;
}

.cta-success {
    display: none;
    margin-top: var(--spacing-md);
}

.cta-success.visible {
    display: block;
}

.cta-success p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.cta-success a {
    color: var(--accent);
    text-decoration: underline;
}

.cta-error {
    display: none;
    margin-top: var(--spacing-sm);
    color: #e74c3c;
    font-size: 0.9rem;
}

.cta-error.visible {
    display: block;
}

.cta-subtitle {
    margin-top: var(--spacing-sm);
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 50ch;
    margin-left: auto;
    margin-right: auto;
}

/* --- Footer ----------------------------------------------- */
.site-footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: var(--border-width) solid var(--grid-line);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-col h4 {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    display: block;
    font-size: 0.9rem;
    color: #555;
    padding: 0.2rem 0;
    transition: color var(--transition);
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-sm);
    border-top: var(--border-width) solid var(--grid-line);
    font-size: 0.8rem;
    color: #888;
    text-align: center;
}

/* --- Cookie Banner ---------------------------------------- */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: #111;
    color: #fff;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    border-top: var(--border-width) solid var(--accent);
}

#cookie-banner p { margin: 0; }
#cookie-banner a { color: var(--accent); text-decoration: underline; }

.cookie-btn {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.cookie-btn--accept {
    background: var(--accent);
    color: #fff;
}

.cookie-btn--decline {
    background: transparent;
    color: #999;
    border: 1px solid #555;
}

.cookie-btn:hover { opacity: 0.85; }

@media (max-width: 600px) {
    #cookie-banner {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
        padding: var(--spacing-sm);
    }
}

/* --- Utility ---------------------------------------------- */
.text-center { text-align: center; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}