:root {
    /* Color Tokens */
    --color-surface: #F5F3EE;
    --color-surface-dim: #E8E6E0;
    --color-surface-bright: #FFFFFF;
    --color-surface-container-lowest: #FFFFFF;
    --color-surface-container-low: #EDEAE3;
    --color-surface-container: #E3E0D8;
    --color-surface-container-high: #D8D4CB;
    --color-surface-container-highest: #CAC5BA;
    --color-on-surface: #0A0A0A;
    --color-on-surface-variant: #3A3A3A;
    --color-outline: #0A0A0A;
    --color-outline-variant: #6B6B6B;
    --color-primary: #0A0A0A;
    --color-on-primary: #F5F3EE;
    --color-primary-container: #1A1A1A;
    --color-on-primary-container: #F5F3EE;
    --color-secondary: #F0D500;
    --color-on-secondary: #0A0A0A;
    --color-secondary-container: #F7E76B;
    --color-on-secondary-container: #2A2300;
    --color-tertiary: #FF0000;
    --color-on-tertiary: #FFFFFF;
    --color-tertiary-container: #5C0000;
    --color-on-tertiary-container: #FFD4D4;
    --color-error: #FF0000;
    --color-on-error: #FFFFFF;
    --color-error-container: #3D0000;
    --color-on-error-container: #FFB3B3;
    --color-background: #F5F3EE;
    --color-on-background: #0A0A0A;
    --color-surface-variant: #E3E0D8;
    --color-surface-tint: #0A0A0A;

    /* Typography Tokens */
    --font-display-massive-size: clamp(56px, 10vw, 140px);
    --font-display-massive-lh: 0.85;
    --font-display-massive-ls: -0.05em;
    
    --font-display-lg-size: clamp(48px, 8vw, 96px);
    --font-display-lg-lh: 0.9;
    --font-display-lg-ls: -0.045em;

    --font-headline-xl-size: clamp(36px, 6vw, 64px);
    --font-headline-xl-lh: 0.95;
    --font-headline-xl-ls: -0.04em;

    --font-headline-lg-size: clamp(28px, 4vw, 44px);
    --font-headline-lg-lh: 1;
    --font-headline-lg-ls: -0.03em;

    --font-headline-md-size: clamp(22px, 3vw, 28px);
    --font-headline-md-lh: 1.1;
    --font-headline-md-ls: -0.02em;

    --font-body-lg-size: 18px;
    --font-body-lg-lh: 1.55;

    --font-body-md-size: 16px;
    --font-body-md-lh: 1.6;

    --font-label-caps-size: 12px;
    --font-label-caps-lh: 1;
    --font-label-caps-ls: 0.08em;

    --font-metric-display-size: clamp(56px, 8vw, 96px);
    --font-metric-display-lh: 0.9;
    --font-metric-display-ls: -0.05em;

    /* Spacing Tokens */
    --spacing-base: 8px;
    --spacing-xs: 4px;
    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 96px;
    --spacing-2xl: 160px;
    --spacing-gutter: 16px;
    --spacing-margin: 24px;
    --spacing-container-max: 1440px;

    /* Borders */
    --border-hard: 1px solid #0A0A0A;
    --border-hard-thick: 2px solid #0A0A0A;
}

/* Reset & Base Rules */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border-radius: 0 !important;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    overflow-x: hidden;
    background-color: var(--color-background);
    color: var(--color-on-background);
    font-family: 'Archivo', sans-serif;
    font-size: var(--font-body-md-size);
    line-height: var(--font-body-md-lh);
    scroll-behavior: smooth;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Archivo Black', sans-serif;
    font-weight: 900;
    text-transform: uppercase;
    color: var(--color-primary);
}

/* Scroll Margin for Sticky Header */
section {
    scroll-margin-top: 80px;
}

/* Header & Navigation */
header {
    background-color: var(--color-surface);
    border-bottom: var(--border-hard-thick);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--spacing-container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-margin);
    height: 80px;
}

.logo {
    font-family: 'Archivo Black', sans-serif;
    font-size: 24px;
    font-weight: 900;
    text-decoration: none;
    color: var(--color-primary);
    letter-spacing: -0.03em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    list-style: none;
    height: 100%;
}

.nav-item {
    display: flex;
    align-items: center;
    height: 100%;
    border-left: var(--border-hard-thick);
}

.nav-item:last-child {
    border-right: var(--border-hard-thick);
}

.nav-link {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 32px;
    text-decoration: none;
    color: var(--color-primary);
    font-family: 'Space Grotesk', sans-serif;
    font-size: var(--font-label-caps-size);
    font-weight: 500;
    line-height: var(--font-label-caps-lh);
    letter-spacing: var(--font-label-caps-ls);
    text-transform: uppercase;
    transition: none; /* Instant flip */
}

.nav-link:hover, 
.nav-link-active,
.nav-menu.active .nav-link:hover {
    background-color: var(--color-primary);
    color: var(--color-surface);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 30px;
    height: 4px;
    background-color: var(--color-primary);
    margin: 6px 0;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

/* Hero Section */
#hero {
    position: relative;
    min-height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-margin);
    background-color: var(--color-surface);
    border-bottom: var(--border-hard-thick);
}

.hero-content {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-headline {
    font-family: 'Archivo Black', sans-serif;
    font-size: var(--font-display-massive-size);
    line-height: var(--font-display-massive-lh);
    letter-spacing: var(--font-display-massive-ls);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    word-wrap: break-word;
    text-transform: uppercase;
}

.hero-subheadline {
    font-family: 'Space Grotesk', sans-serif;
    font-size: var(--font-body-lg-size);
    line-height: 1.3;
    font-weight: 700;
    text-transform: uppercase;
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
    border-left: 6px solid var(--color-primary);
    padding-left: var(--spacing-md);
}

/* Buttons */
.cta-primary {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-surface);
    padding: 20px 40px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: var(--font-label-caps-size);
    font-weight: 700;
    line-height: var(--font-label-caps-lh);
    letter-spacing: var(--font-label-caps-ls);
    text-decoration: none;
    text-transform: uppercase;
    border: var(--border-hard-thick);
    cursor: pointer;
    transition: none; /* Instant flip */
    text-align: center;
    max-width: 100%;
    white-space: normal;
}

.cta-primary:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.cta-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--color-primary);
    padding: 19px 39px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: var(--font-label-caps-size);
    font-weight: 700;
    line-height: var(--font-label-caps-lh);
    letter-spacing: var(--font-label-caps-ls);
    text-decoration: none;
    text-transform: uppercase;
    border: var(--border-hard-thick);
    cursor: pointer;
    transition: none; /* Instant flip */
    text-align: center;
    max-width: 100%;
    white-space: normal;
}

.cta-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-surface);
}

/* Brutalist Bar (Divider) */
.divider {
    background-color: var(--color-primary);
    color: var(--color-surface);
    height: 48px;
    display: flex;
    align-items: center;
    overflow: hidden;
    white-space: nowrap;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-top: var(--border-hard-thick);
    border-bottom: var(--border-hard-thick);
}

.divider-track {
    display: inline-block;
    animation: marquee 25s linear infinite;
    padding-left: 100%;
}

@keyframes marquee {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-100%, 0, 0); }
}

/* About Section */
#about {
    padding: var(--spacing-2xl) var(--spacing-margin);
    max-width: var(--spacing-container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-xl);
    border-bottom: var(--border-hard-thick);
}

.about-left h2 {
    font-size: var(--font-display-lg-size);
    line-height: var(--font-display-lg-lh);
    letter-spacing: var(--font-display-lg-ls);
    margin-bottom: var(--spacing-lg);
}

.about-bio {
    font-family: 'Archivo', sans-serif;
    font-size: var(--font-body-lg-size);
    line-height: var(--font-body-lg-lh);
    font-weight: 400;
    color: var(--color-on-surface);
}

.about-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    justify-content: center;
}

.stat-item {
    border-left: 6px solid var(--color-primary);
    padding-left: var(--spacing-md);
}

.metric-display {
    font-family: 'Archivo Black', sans-serif;
    font-size: var(--font-metric-display-size);
    line-height: var(--font-metric-display-lh);
    letter-spacing: var(--font-metric-display-ls);
    display: block;
    margin-bottom: var(--spacing-base);
    color: var(--color-primary);
}

.metric-label {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: var(--font-label-caps-size);
    line-height: var(--font-label-caps-lh);
    letter-spacing: var(--font-label-caps-ls);
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-source {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--color-on-surface-variant);
    letter-spacing: 0.05em;
}

/* Cases Section */
#cases {
    padding: var(--spacing-2xl) var(--spacing-margin);
    background-color: var(--color-surface-bright);
    border-bottom: var(--border-hard-thick);
}

.section-title {
    font-size: var(--font-display-lg-size);
    line-height: var(--font-display-lg-lh);
    letter-spacing: var(--font-display-lg-ls);
    margin-bottom: var(--spacing-xl);
    max-width: var(--spacing-container-max);
    margin-left: auto;
    margin-right: auto;
}

.cases-grid {
    max-width: var(--spacing-container-max);
    margin: 0 auto;
}

.case-card {
    background-color: var(--color-surface);
    border: var(--border-hard-thick);
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--spacing-lg);
    transition: none; /* Instant flip */
}

/* Case Card Hover - Full Inversion */
.case-card:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-primary);
}

.case-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.case-meta {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: var(--font-label-caps-size);
    line-height: var(--font-label-caps-lh);
    letter-spacing: var(--font-label-caps-ls);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.case-title {
    font-size: var(--font-headline-lg-size);
    line-height: var(--font-headline-lg-lh);
    letter-spacing: var(--font-headline-lg-ls);
    margin-bottom: var(--spacing-md);
}

.case-description {
    font-family: 'Archivo', sans-serif;
    font-size: var(--font-body-md-size);
    line-height: var(--font-body-md-lh);
    margin-bottom: var(--spacing-lg);
    color: var(--color-on-surface);
}

.niche-chip {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-surface);
    padding: 6px 12px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-md);
    align-self: flex-start;
}

.case-metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    border-top: var(--border-hard-thick);
    padding-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.case-metric-box {
    padding: var(--spacing-sm);
    border: var(--border-hard);
    background-color: var(--color-surface-bright);
    color: var(--color-primary);
}

.case-metric-box.highlight {
    background-color: var(--color-primary);
    color: var(--color-surface);
}

/* Inversion overrides on hover */
.case-card:hover .case-metric-box {
    background-color: var(--color-surface-bright);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.case-card:hover .case-metric-box.highlight {
    background-color: var(--color-primary);
    color: var(--color-surface);
}

.case-metric-val {
    font-family: 'Archivo Black', sans-serif;
    font-size: 28px;
    line-height: 1;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.case-metric-lbl {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 10px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
}

/* Case Visuals & Assets */
.case-visuals {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.case-cover-wrapper {
    border: var(--border-hard-thick);
    overflow: hidden;
    height: 300px;
}

.case-cover-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: none;
}

.case-card:hover .case-cover-wrapper img {
    filter: grayscale(0%);
}

/* Real Asset Fit Contract */
.asset-frame {
    border: var(--border-hard-thick);
    background-color: var(--color-surface-bright);
    padding: var(--spacing-md);
    margin: 0;
}

.asset-frame--creative {
    display: flex;
    flex-direction: column;
}

.asset-image {
    width: 100%;
    height: auto;
    display: block;
}

.asset-image--contain,
img[data-fit-policy="preserve_original_aspect"],
img[data-fit-policy="contain_in_frame"],
.asset-frame--creative img,
.asset-frame--dashboard img {
    object-fit: contain !important;
    width: 100% !important;
    height: auto !important;
    max-height: min(72vh, 760px) !important;
}

.evidence-caption {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-top: var(--spacing-sm);
    border-top: var(--border-hard);
    padding-top: var(--spacing-xs);
    color: var(--color-primary);
}

.source-quote-box {
    background-color: var(--color-surface-bright);
    border: var(--border-hard-thick);
    padding: var(--spacing-md);
    font-family: 'Archivo', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    position: relative;
    color: var(--color-primary);
}

.source-quote-box::before {
    content: "“";
    font-family: 'Archivo Black', sans-serif;
    font-size: 64px;
    color: var(--color-secondary);
    position: absolute;
    top: -10px;
    left: 10px;
    line-height: 1;
    opacity: 0.4;
    pointer-events: none;
}

/* Services Section */
#services {
    padding: var(--spacing-2xl) var(--spacing-margin);
    max-width: var(--spacing-container-max);
    margin: 0 auto;
    border-bottom: var(--border-hard-thick);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.service-tile {
    background-color: var(--color-surface-bright);
    border: var(--border-hard-thick);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 380px;
    transition: none; /* Instant flip */
}

.service-tile:hover {
    background-color: var(--color-primary);
    color: var(--color-surface);
    border-color: var(--color-primary);
}

.tile-header {
    border-bottom: var(--border-hard-thick);
    padding: var(--spacing-md);
    background-color: var(--color-surface);
    color: var(--color-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tile-number {
    font-family: 'Archivo Black', sans-serif;
    font-size: 48px;
    line-height: 1;
}

.tile-body {
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    height: 100%;
}

.tile-title {
    font-size: var(--font-headline-md-size);
    line-height: var(--font-headline-md-lh);
    letter-spacing: var(--font-headline-md-ls);
    margin-bottom: var(--spacing-sm);
}

.tile-desc {
    font-family: 'Archivo', sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

/* Contacts Section */
#contacts {
    padding: var(--spacing-2xl) var(--spacing-margin);
    background-color: var(--color-primary);
    color: var(--color-surface);
    text-align: center;
    border-bottom: var(--border-hard-thick);
}

.contacts-container {
    max-width: 800px;
    margin: 0 auto;
}

.contacts-title {
    font-size: var(--font-display-lg-size);
    line-height: var(--font-display-lg-lh);
    letter-spacing: var(--font-display-lg-ls);
    margin-bottom: var(--spacing-md);
    color: var(--color-surface);
}

.contacts-subtitle {
    font-family: 'Space Grotesk', sans-serif;
    font-size: var(--font-body-lg-size);
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--color-secondary);
    letter-spacing: 0.05em;
}

/* Footer */
footer {
    background-color: var(--color-surface);
    border-top: var(--border-hard-thick);
    padding: var(--spacing-lg) var(--spacing-margin);
}

.footer-container {
    max-width: var(--spacing-container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    font-size: var(--font-label-caps-size);
    letter-spacing: var(--font-label-caps-ls);
}

/* Scroll Animations */
.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Responsive Rules (Mobile First) */

/* Tablet & Desktop Layouts */
@media (min-width: 768px) {
    .hamburger {
        display: none;
    }
}

@media (max-width: 1024px) {
    #about {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .case-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    /* Navigation Mobile */
    .nav-menu {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--color-surface);
        flex-direction: column;
        border-bottom: var(--border-hard-thick);
        height: auto;
        z-index: 999;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-item {
        border-left: none;
        border-bottom: var(--border-hard);
        width: 100%;
        height: auto;
    }

    .nav-item:last-child {
        border-right: none;
        border-bottom: none;
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-md);
        justify-content: center;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }

    /* Layout Adjustments */
    #hero {
        padding: var(--spacing-lg) var(--spacing-margin);
    }

    .hero-headline {
        margin-bottom: var(--spacing-md);
    }

    .hero-subheadline {
        padding-left: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }

    #about, #cases, #services, #contacts {
        padding: var(--spacing-xl) var(--spacing-margin);
    }

    .section-title {
        margin-bottom: var(--spacing-lg);
    }

    .case-card {
        padding: var(--spacing-md);
    }

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

    .footer-container {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-delay: 0s !important;
        animation-duration: 0s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0s !important;
        scroll-behavior: auto !important;
    }
    .divider-track {
        animation: none;
    }
}

@media print {
    header, footer, .hamburger, .cta-primary, .cta-secondary, .divider {
        display: none !important;
    }
    body {
        background-color: #FFFFFF;
        color: #000000;
    }
    #about, #cases, #services {
        page-break-inside: avoid;
    }
}

/* Real evidence asset safety: keep ad creatives and dashboards un-cropped. */
img[data-fit-policy="preserve_original_aspect"],
img[data-fit-policy="contain_in_frame"],
img[data-asset-role="ad_creative"],
img[data-asset-role="ad_dashboard"],
img[data-asset-role="case_screenshot"],
.asset-image--contain,
.asset-frame--creative img,
.asset-frame--dashboard img {
    width: 100% !important;
    height: auto !important;
    max-height: min(72vh, 760px) !important;
    object-fit: contain !important;
    object-position: center center !important;
}

.asset-frame--creative,
.asset-frame--dashboard {
    overflow: visible !important;
}