:root {
    --bg-main: #FFFDF9;
    --surface: #FFFFFF;
    --deep-ink: #2C0E11;
    --data-blue: #C0392B;
    --signal-green: #F1C40F;
    --warm-sand: #F39C12;
    --grid-line: #F5EBE0;
    --alert-amber: #D35400;
    --muted-text: #6E5B5D;
    --font-mono: 'Courier New', Courier, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--deep-ink);
    font-family: var(--font-sans);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* Base Layout Elements */
.grid-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1px;
    background-color: var(--grid-line);
    border-bottom: 1px solid var(--grid-line);
}

.grid-cell {
    background-color: var(--surface);
    padding: 2.5rem;
}

/* Utilities */
.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }

@media (max-width: 1024px) {
    .col-8, .col-6, .col-4, .col-3 {
        grid-column: span 6;
    }
}

@media (max-width: 768px) {
    .col-8, .col-6, .col-4, .col-3 {
        grid-column: span 12;
    }
    .grid-cell {
        padding: 1.5rem;
    }
}

/* Slim Sticky Header */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 253, 249, 0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--grid-line);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 2rem;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--deep-ink);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.brand-logo-symbol {
    width: 20px;
    height: 20px;
    border: 2px solid var(--data-blue);
    position: relative;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
    padding: 2px;
}

.brand-logo-symbol span {
    background-color: var(--signal-green);
    display: block;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--muted-text);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

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

.cta-btn {
    background-color: var(--data-blue);
    color: #fff;
    padding: 0.6rem 1.2rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-mono);
    border: 1px solid var(--data-blue);
    transition: var(--transition-fast);
}

.cta-btn:hover {
    background-color: transparent;
    color: var(--data-blue);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--deep-ink);
    margin: 4px 0;
    transition: var(--transition-fast);
}

@media (max-width: 991px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--surface);
        flex-direction: column;
        padding: 1.5rem;
        border-bottom: 1px solid var(--grid-line);
        gap: 1rem;
        align-items: flex-start;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
}

/* Hero Section */
.hero-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    border-left: 1px solid var(--grid-line);
    border-right: 1px solid var(--grid-line);
}

.hero-main {
    padding: 5rem 2.5rem;
}

.mono-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--data-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.mono-tag::before {
    content: "■";
    font-size: 0.6rem;
    color: var(--signal-green);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: clamp(1.1rem, 2.5vw, 1.25rem);
    color: var(--muted-text);
    max-width: 750px;
    margin-bottom: 2.5rem;
}

/* Service Finder Module */
.finder-module {
    border-top: 1px solid var(--grid-line);
    background-color: var(--bg-main);
}

.finder-selector {
    background-color: var(--surface);
    padding: 1.5rem 2.5rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--grid-line);
}

.finder-tab {
    background-color: var(--bg-main);
    border: 1px solid var(--grid-line);
    color: var(--muted-text);
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.finder-tab.active, .finder-tab:hover {
    background-color: var(--data-blue);
    color: #fff;
    border-color: var(--data-blue);
}

.finder-content-pane {
    display: none;
    animation: fadeIn var(--transition-smooth);
}

.finder-content-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section Titles */
.section-header {
    border-bottom: 1px solid var(--grid-line);
    background-color: var(--surface);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Data Maturity Map */
.maturity-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background-color: var(--grid-line);
}

.maturity-step {
    background-color: var(--surface);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 250px;
}

.maturity-step .step-num {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--warm-sand);
    border-bottom: 1px solid var(--grid-line);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.maturity-step h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.maturity-step p {
    font-size: 0.85rem;
    color: var(--muted-text);
}

@media (max-width: 1024px) {
    .maturity-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .maturity-grid {
        grid-template-columns: 1fr;
    }
}

/* Cards & Content Blocks */
.content-card {
    background-color: var(--surface);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-text {
    font-size: 0.95rem;
    color: var(--muted-text);
    margin-bottom: 1.5rem;
}

.card-metadata {
    border-top: 1px solid var(--grid-line);
    padding-top: 1rem;
    margin-top: auto;
}

.metadata-item {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted-text);
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.metadata-item span:last-child {
    color: var(--data-blue);
    font-weight: bold;
}

/* Cautious Note / Alert styling */
.cautious-note {
    background-color: #FFFDF5;
    border-left: 3px solid var(--alert-amber);
    padding: 1rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: #8C5300;
}

.cautious-note h5 {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

/* Custom Visualisations (Data Intelligence Notebook aesthetic) */
.flow-diagram {
    background-color: #FFFDF9;
    border: 1px solid var(--grid-line);
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    margin: 1.5rem 0;
}

.flow-step {
    padding: 0.75rem;
    border: 1px solid var(--grid-line);
    background-color: var(--surface);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.flow-step::before {
    content: "●";
    color: var(--data-blue);
}

.flow-arrow {
    text-align: center;
    color: var(--muted-text);
    margin: 0.25rem 0;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--grid-line);
    background-color: var(--bg-main);
    color: var(--deep-ink);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--data-blue);
    background-color: var(--surface);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C0392B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
}

.submit-btn {
    background-color: var(--data-blue);
    color: #fff;
    border: 1px solid var(--data-blue);
    padding: 1rem 2rem;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: var(--transition-fast);
    width: 100%;
}

.submit-btn:hover {
    background-color: transparent;
    color: var(--data-blue);
}

/* Legal Footer */
footer {
    border-top: 1px solid var(--grid-line);
    background-color: var(--surface);
}

.footer-main {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-top {
    padding: 4rem 2.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--grid-line);
    padding: 1.5rem 2.5rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--muted-text);
    font-size: 0.8rem;
}

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

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--surface);
    border-top: 2px solid var(--data-blue);
    z-index: 1000;
    padding: 1.5rem 2.5rem;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.05);
    display: none;
}

.cookie-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

@media (max-width: 768px) {
    .cookie-container {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
}

.cookie-text {
    font-size: 0.85rem;
    color: var(--muted-text);
    max-width: 800px;
}

.cookie-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.cookie-btn {
    padding: 0.5rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    border: 1px solid var(--grid-line);
    background-color: var(--bg-main);
    color: var(--deep-ink);
    transition: var(--transition-fast);
}

.cookie-btn.primary {
    background-color: var(--data-blue);
    color: #fff;
    border-color: var(--data-blue);
}

.cookie-btn:hover {
    background-color: var(--grid-line);
}

/* Knowledge Base grid & layout styling */
.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background-color: var(--grid-line);
}

@media (max-width: 991px) {
    .knowledge-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .knowledge-grid {
        grid-template-columns: 1fr;
    }
}

.kb-card {
    background-color: var(--surface);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 280px;
}

.kb-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--data-blue);
    margin-bottom: 1rem;
}

.kb-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.kb-card p {
    font-size: 0.9rem;
    color: var(--muted-text);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.kb-btn {
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--deep-ink);
    text-decoration: none;
    border-bottom: 1px solid var(--deep-ink);
    padding-bottom: 2px;
}

/* Interactive Accordion Styles */
.accordion-item {
    border-bottom: 1px solid var(--grid-line);
}

.accordion-trigger {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-trigger::after {
    content: "+";
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--muted-text);
}

.accordion-item.active .accordion-trigger::after {
    content: "-";
}

.accordion-content {
    display: none;
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--muted-text);
}

.accordion-item.active .accordion-content {
    display: block;
}