:root {
    /* Color Tokens */
    --color-surface: #09090B;
    --color-surface-dim: #050507;
    --color-surface-bright: #18181B;
    --color-surface-container-lowest: #000000;
    --color-surface-container-low: #0E0E11;
    --color-surface-container: #141418;
    --color-surface-container-high: #1C1C21;
    --color-surface-container-highest: #26262C;
    --color-on-surface: #FAFAFA;
    --color-on-surface-variant: #A1A1AA;
    --color-outline: #3F3F46;
    --color-outline-variant: #27272A;
    --color-primary: #FF2D55;
    --color-on-primary: #FFFFFF;
    --color-primary-container: #7F1D2A;
    --color-on-primary-container: #FECDD3;
    --color-secondary: #00FF88;
    --color-on-secondary: #042B1A;
    --color-secondary-container: #065F46;
    --color-on-secondary-container: #A7F3D0;
    --color-tertiary: #FFC700;
    --color-on-tertiary: #2E2000;
    --color-tertiary-container: #92630C;
    --color-on-tertiary-container: #FEF3C7;
    --color-error: #FF453A;
    --color-on-error: #FFFFFF;
    --color-error-container: #991B1B;
    --color-on-error-container: #FEE2E2;
    --color-background: #09090B;
    --color-on-background: #FAFAFA;
    --color-surface-variant: #141418;
    --color-surface-tint: #FF2D55;

    /* Typography Tokens */
    --font-family-heading: 'Space Grotesk', sans-serif;
    --font-family-body: 'Inter', sans-serif;
    --font-family-mono: 'JetBrains Mono', monospace;

    /* Font Styles */
    --font-display-xl: 800 clamp(48px, 8vw, 96px)/0.92 var(--font-family-heading);
    --font-display-lg: 800 clamp(36px, 6vw, 72px)/0.95 var(--font-family-heading);
    --font-headline-lg: 700 clamp(28px, 4vw, 44px)/1.05 var(--font-family-heading);
    --font-headline-md: 700 clamp(22px, 3vw, 28px)/1.15 var(--font-family-heading);
    --font-body-lg: 400 18px/1.6 var(--font-family-body);
    --font-body-md: 400 16px/1.6 var(--font-family-body);
    --font-metric-display: 700 clamp(32px, 5vw, 64px)/1 var(--font-family-mono);
    --font-metric-label: 500 12px/1 var(--font-family-mono);
    --font-label-caps: 600 12px/1 var(--font-family-heading);

    /* Letter Spacing */
    --letter-spacing-display-xl: -0.045em;
    --letter-spacing-display-lg: -0.04em;
    --letter-spacing-headline-lg: -0.02em;
    --letter-spacing-headline-md: -0.01em;
    --letter-spacing-metric-display: -0.03em;
    --letter-spacing-metric-label: 0.12em;
    --letter-spacing-label-caps: 0.14em;

    /* Border Radius Tokens */
    --rounded-none: 0;
    --rounded-sm: 4px;
    --rounded-md: 8px;
    --rounded-lg: 14px;
    --rounded-xl: 20px;
    --rounded-full: 9999px;

    /* Spacing Tokens */
    --spacing-base: 8px;
    --spacing-xs: 4px;
    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 96px;
    --spacing-gutter: 24px;
    --spacing-margin: 32px;
    --spacing-container-max: 1280px;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--color-background);
    color: var(--color-on-surface);
    font-family: var(--font-family-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
    background-color: var(--color-background);
}

/* Layout & Grid System */
.container {
    width: 100%;
    max-width: var(--spacing-container-max);
    margin-right: auto;
    margin-left: auto;
    padding-right: var(--spacing-md);
    padding-left: var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding-right: var(--spacing-lg);
        padding-left: var(--spacing-lg);
    }
}

.section {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    scroll-margin-top: 80px;
}

/* Navigation Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(9, 9, 11, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-outline-variant);
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-family: var(--font-family-heading);
    font-weight: 800;
    font-size: 16px;
    letter-spacing: 0.1em;
    color: var(--color-on-surface);
    text-decoration: none;
}

.logo span {
    color: var(--color-primary);
}

nav {
    display: none;
}

@media (min-width: 768px) {
    nav {
        display: flex;
        gap: var(--spacing-lg);
        align-items: center;
    }
}

.nav-link {
    font: var(--font-label-caps);
    letter-spacing: var(--letter-spacing-label-caps);
    color: var(--color-on-surface-variant);
    text-decoration: none;
    text-transform: uppercase;
    transition: color 150ms ease;
}

.nav-link:hover {
    color: var(--color-on-surface);
}

.nav-link-active {
    color: var(--color-primary);
}

/* Hamburger Menu Button */
.hamburger {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-base);
    z-index: 110;
}

@media (min-width: 768px) {
    .hamburger {
        display: none;
    }
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-on-surface);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-background);
    z-index: 105;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu.active {
    transform: translateY(0);
}

.mobile-menu .nav-link {
    font-size: 20px;
    letter-spacing: 0.1em;
}

/* Hero Section */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    padding-bottom: var(--spacing-xl);
    background-image: linear-gradient(to bottom, rgba(9, 9, 11, 0.85), #09090B), url('../assets/hero_bg.png');
    background-size: cover;
    background-position: center;
}

.hero-content {
    max-width: 800px;
}

.hero-headline {
    font: var(--font-display-xl);
    letter-spacing: var(--letter-spacing-display-xl);
    color: var(--color-on-surface);
    margin-bottom: var(--spacing-md);
}

.hero-subheadline {
    font: var(--font-body-lg);
    color: var(--color-on-surface-variant);
    margin-bottom: var(--spacing-lg);
    max-width: 680px;
}

/* Buttons */
.cta-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 18px 32px;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font: var(--font-label-caps);
    letter-spacing: var(--letter-spacing-label-caps);
    text-transform: uppercase;
    text-decoration: none;
    border: none;
    border-radius: var(--rounded-md);
    cursor: pointer;
    transition: background-color 150ms ease, box-shadow 150ms ease;
    white-space: normal;
    max-width: 100%;
    text-align: center;
}

.cta-primary:hover, .cta-primary-hover {
    background-color: #FF5574;
    box-shadow: 0 0 40px rgba(255, 45, 85, 0.25);
}

.cta-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 18px 32px;
    background-color: transparent;
    color: var(--color-on-surface);
    font: var(--font-label-caps);
    letter-spacing: var(--letter-spacing-label-caps);
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--rounded-md);
    cursor: pointer;
    transition: background-color 150ms ease, border-color 150ms ease;
    white-space: normal;
    max-width: 100%;
    text-align: center;
}

.cta-secondary:hover, .cta-secondary-hover {
    background-color: var(--color-surface-container-high);
    border-color: var(--color-on-surface-variant);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

@media (min-width: 1024px) {
    .about-grid {
        grid-template-columns: 1.2fr 1fr;
        gap: var(--spacing-xl);
    }
}

.section-title {
    font: var(--font-headline-lg);
    letter-spacing: var(--letter-spacing-headline-lg);
    color: var(--color-on-surface);
    margin-bottom: var(--spacing-md);
}

.about-text {
    font: var(--font-body-lg);
    color: var(--color-on-surface-variant);
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background-color: var(--color-surface-container);
    padding: var(--spacing-lg);
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-outline-variant);
}

.stat-item {
    border-bottom: 1px solid var(--color-outline-variant);
    padding-bottom: var(--spacing-md);
}

.stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.metric-display {
    font: var(--font-metric-display);
    letter-spacing: var(--letter-spacing-metric-display);
    color: var(--color-secondary);
    display: block;
    overflow-wrap: anywhere;
}

.metric-label {
    font: var(--font-metric-label);
    letter-spacing: var(--letter-spacing-metric-label);
    color: var(--color-on-surface-variant);
    text-transform: uppercase;
    margin-top: var(--spacing-base);
    display: block;
}

.stat-source {
    font-family: var(--font-family-mono);
    font-size: 11px;
    color: var(--color-on-surface-variant);
    opacity: 0.5;
    margin-top: var(--spacing-xs);
    display: block;
}

/* Cases Section */
.cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

.case-card {
    background-color: var(--color-surface-container);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--color-outline-variant);
    transition: background-color 150ms ease, border-color 150ms ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.case-card:hover, .case-card-hover {
    background-color: var(--color-surface-container-high);
    border-color: var(--color-primary);
}

.case-image-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-surface-container-lowest);
}

.case-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-image {
    transform: scale(1.02);
}

.case-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

@media (min-width: 768px) {
    .case-content {
        padding: var(--spacing-lg);
    }
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-md);
}

.niche-chip {
    font: var(--font-label-caps);
    letter-spacing: var(--letter-spacing-label-caps);
    background-color: var(--color-primary-container);
    color: var(--color-on-primary-container);
    padding: 6px 14px;
    border-radius: var(--rounded-full);
    text-transform: uppercase;
    display: inline-block;
}

.case-title {
    font: var(--font-headline-md);
    letter-spacing: var(--letter-spacing-headline-md);
    color: var(--color-on-surface);
    margin-bottom: var(--spacing-md);
}

.case-description {
    font: var(--font-body-md);
    color: var(--color-on-surface-variant);
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.case-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-outline-variant);
}

.case-metric-val {
    font-family: var(--font-family-mono);
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 700;
    line-height: 1.1;
    display: block;
    overflow-wrap: anywhere;
}

.case-metric-val.highlight {
    color: var(--color-secondary);
}

.case-metric-val.normal {
    color: var(--color-on-surface);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-tile {
    background-color: var(--color-surface-container-low);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md);
    transition: border-color 150ms ease, background-color 150ms ease;
}

@media (min-width: 768px) {
    .service-tile {
        padding: var(--spacing-lg);
    }
}

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

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.service-title {
    font: var(--font-headline-md);
    letter-spacing: var(--letter-spacing-headline-md);
    color: var(--color-on-surface);
    margin-bottom: var(--spacing-sm);
}

.service-desc {
    font: var(--font-body-md);
    color: var(--color-on-surface-variant);
}

/* Contacts Section */
.contacts-container {
    background-color: var(--color-surface-container);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .contacts-container {
        padding: var(--spacing-lg);
    }
}

@media (min-width: 1024px) {
    .contacts-container {
        grid-template-columns: 1.2fr 1fr;
        gap: var(--spacing-xl);
        padding: var(--spacing-xl);
    }
}

.contacts-info h3 {
    font: var(--font-headline-lg);
    letter-spacing: var(--letter-spacing-headline-lg);
    color: var(--color-on-surface);
    margin-bottom: var(--spacing-sm);
}

.contacts-info p {
    font: var(--font-body-md);
    color: var(--color-on-surface-variant);
    margin-bottom: var(--spacing-lg);
}

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

.contact-link-item {
    font-family: var(--font-family-mono);
    font-size: 16px;
    color: var(--color-on-surface);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: color 150ms ease;
}

.contact-link-item:hover {
    color: var(--color-primary);
}

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

.input-field {
    background-color: var(--color-surface-container-lowest);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--rounded-md);
    padding: 16px 20px;
    color: var(--color-on-surface);
    font: var(--font-body-md);
    transition: border-color 150ms ease;
    width: 100%;
}

.input-field:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Divider */
.divider {
    height: 1px;
    background-color: var(--color-outline-variant);
    border: none;
    margin: 0;
}

/* Footer */
footer {
    background-color: var(--color-background);
    border-top: 1px solid var(--color-outline-variant);
    padding: var(--spacing-lg) 0;
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-family-mono);
    font-size: 12px;
    color: var(--color-on-surface-variant);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-container {
        flex-direction: row;
        text-align: left;
    }
}

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

/* Base animation states */
.hero-content, .about-grid, .cases-grid, .services-grid, .contacts-container {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Ensure content is visible if JS is disabled or for immediate viewports */
.hero-section.visible .hero-content,
.visible .hero-content,
.visible .about-grid,
.visible .cases-grid,
.visible .services-grid,
.visible .contacts-container {
    opacity: 1;
    transform: translateY(0);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .hero-content, .about-grid, .cases-grid, .services-grid, .contacts-container {
        opacity: 1;
        transform: none;
    }
}

@media print {
    header, footer, .hamburger, .mobile-menu, .cta-primary, .cta-secondary, .contact-form {
        display: none !important;
    }
    body {
        background-color: #FFFFFF;
        color: #000000;
    }
    .case-card, .service-tile, .about-stats, .contacts-container {
        border: 1px solid #000000;
        background-color: #FFFFFF;
        color: #000000;
    }
}