/* MINIMALIST LIGHT MODE - RADICAL RESTRUCTURE */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9f9f9;
    --text-primary: #0A1A2F; /* Midnight Navy */
    --text-secondary: #4A5568;
    --text-tertiary: #8892A0;
    --border-color: #e2e8f0;
    --accent: #0A1A2F;
    
    --font-sans: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-serif: "Source Serif 4", Georgia, serif;
    
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    /* Subtler Technical Grid Background */
    background-image: 
        linear-gradient(rgba(226, 232, 240, 0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(226, 232, 240, 0.5) 1px, transparent 1px);
    background-size: 60px 60px;
    background-attachment: fixed;
    background-color: #fff;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, transparent 0%, var(--bg-primary) 85%);
    pointer-events: none;
    z-index: -1;
}

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

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

button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 3px;
}

.section-contact-massive :focus-visible,
.footer-minimal :focus-visible {
    outline-color: var(--bg-primary);
}

.container {
    width: min(1320px, 100% - 48px);
    margin: 0 auto;
}

.eyebrow-modern {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
    display: block;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

i {
    font-style: italic;
    color: var(--text-secondary);
}

/* Navigation */
.navbar-modern {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0);
}

.navbar-modern.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container-modern {
    width: min(1320px, 100% - 48px);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-lockup {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 52px;
    width: auto;
}

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

.nav-links-modern a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.nav-links-modern a:hover {
    color: var(--text-primary);
}

.btn-outline {
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    border-radius: 40px;
}

.btn-outline:hover {
    border-color: var(--text-primary);
}

.btn-solid {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 1rem 2rem;
    border-radius: 40px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: transform 0.3s ease, background 0.3s ease;
}

.btn-solid:hover {
    transform: translateY(-2px);
    background: #000;
}

.btn-text {
    font-weight: 500;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--text-primary);
    padding-bottom: 2px;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.hamburger span {
    width: 24px;
    height: 1.5px;
    background: var(--text-primary);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* Nav Overlay Mobile */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Hero Section */
.hero-editorial {
    padding-top: 18vh;
    padding-bottom: 6rem;
    position: relative;
}

.hero-grid-editorial {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 4rem;
}

.sidebar-status {
    margin-top: 4rem;
}

.sidebar-status span {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

.sidebar-status strong {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.hero-main h1 {
    font-size: clamp(3rem, 7vw, 6rem);
    max-width: 14ch;
    margin-bottom: 6rem;
}

.hero-narrative {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    border-top: 1px solid var(--border-color);
    padding-top: 4rem;
    margin-bottom: 5rem;
}

.hero-lead-modern {
    font-size: 1.4rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.hero-actions-modern {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    padding-top: 0.5rem;
}

/* Floating Diagram */
.hero-diagram-floating {
    margin-top: 2rem;
    position: relative;
    z-index: 10;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    padding: 3rem;
    border-radius: 2px;
    box-shadow: 0 40px 100px -20px rgba(0,0,0,0.05);
}

.diagram-nodes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    position: relative;
}

.diagram-nodes::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 10%;
    right: 10%;
    height: 1px;
    background: repeating-linear-gradient(
        90deg,
        var(--border-color),
        var(--border-color) 4px,
        transparent 4px,
        transparent 8px
    );
    z-index: -1;
}

.d-node {
    padding: 2rem;
    background: #fff;
    border: 1px solid var(--border-color);
    position: relative;
    transition: var(--transition);
}

.d-node:hover {
    border-color: var(--text-primary);
    transform: translateY(-5px);
}

.d-node::before {
    content: "";
    position: absolute;
    top: -1px;
    left: -1px;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--text-primary);
    border-left: 2px solid var(--text-primary);
    opacity: 0;
    transition: var(--transition);
}

.d-node:hover::before {
    opacity: 1;
}

.d-label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    display: block;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.d-node p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.diagram-foundation {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    text-transform: uppercase;
}

/* Services Masonry */
.section-services {
    padding: 10rem 0;
    background: var(--bg-secondary);
}

.section-header-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 6rem;
    align-items: end;
}

.section-header-split h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
}

.header-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 400px;
}

.services-masonry {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
}

.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    transition: var(--transition);
}

.card-icon svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
}

.service-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    padding: 3.5rem 2.5rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--text-primary);
}

.service-card:hover .card-icon {
    border-color: var(--text-primary);
    background: var(--text-primary);
    color: var(--bg-primary);
}

.large-card {
    grid-column: span 7;
}

.small-card {
    grid-column: span 5;
}

.offset-card {
    margin-top: 4rem;
}

.service-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    max-width: 15ch;
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.clean-list {
    list-style: none;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.clean-list li {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.clean-list li::before {
    content: "—";
    margin-right: 1rem;
    color: var(--text-tertiary);
}

/* Reference Section - Sticky */
.section-reference {
    padding: 10rem 0;
    background: var(--bg-primary);
}

.reference-container {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 6rem;
    align-items: flex-start;
}

.reference-sticky {
    position: sticky;
    top: 8rem;
}

.reference-sticky h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 2rem;
}

.case-study-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.cs-metric strong {
    display: block;
    font-size: 2.5rem;
    font-family: var(--font-serif);
    color: var(--text-primary);
    line-height: 1;
}

.cs-metric span {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
}

.tech-stack-list {
    list-style: none;
    margin-top: 1rem;
}

.tech-stack-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 1rem;
    color: var(--text-secondary);
}

.tech-stack-list li strong {
    color: var(--text-primary);
    width: 120px;
    display: inline-block;
}


.reference-sticky p {
    font-size: 1.15rem;
    color: var(--text-secondary);
}

.ref-block {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-color);
}

.ref-block:first-child {
    padding-top: 0;
}

.ref-block h4 {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
}

.ref-block p {
    font-size: 1.15rem;
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-secondary);
}

.ref-board {
    margin-top: 4rem;
    background: var(--bg-secondary);
    padding: 3rem;
    border: 1px solid var(--border-color);
}

.board-item {
    padding: 1.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    font-size: 1.1rem;
    display: flex;
    flex-direction: column;
}

.board-item span {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

.highlight-item {
    border-color: var(--text-primary);
    background: var(--text-primary);
    color: var(--bg-primary);
}

.highlight-item span {
    color: rgba(255,255,255,0.6);
}

.board-arrow {
    text-align: center;
    padding: 1rem 0;
    color: var(--text-tertiary);
}

/* Vertical Timeline */
.section-approach {
    padding: 10rem 0;
    background: var(--bg-secondary);
}

.approach-header h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 6rem;
}

.vertical-timeline {
    max-width: 800px;
    position: relative;
}

.vertical-timeline::before {
    content: "";
    position: absolute;
    left: 2rem;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border-color);
}

.timeline-row {
    display: flex;
    gap: 4rem;
    margin-bottom: 4rem;
    position: relative;
}

.t-step {
    width: 4rem;
    height: 4rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    flex-shrink: 0;
    z-index: 2;
}

.t-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    margin-top: 0.5rem;
}

.t-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Massive Contact Footer */
.section-contact-massive {
    padding: 12rem 0;
    background: var(--text-primary);
    color: var(--bg-primary);
}

.section-contact-massive .eyebrow-modern {
    color: rgba(255,255,255,0.4);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 8rem;
}

.contact-main h2 {
    color: var(--bg-primary);
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 2rem;
}

.contact-main p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.7);
    max-width: 500px;
    margin-bottom: 3rem;
}

.contact-main .btn-solid {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.contact-main .btn-solid:hover {
    background: var(--border-color);
}

.detail-item {
    margin-bottom: 4rem;
}

.email-link {
    font-family: var(--font-serif);
    font-size: 2rem;
    display: block;
    margin-bottom: 1rem;
    transition: opacity 0.3s;
}

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

.btn-copy {
    color: rgba(255,255,255,0.6);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px dashed rgba(255,255,255,0.3);
    padding-bottom: 2px;
}

.btn-copy:hover {
    color: #fff;
}

.copy-status {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: #4ade80;
}

.footer-link {
    display: block;
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0.75rem;
    transition: transform 0.2s;
}

.footer-link:hover {
    transform: translateX(5px);
    color: #fff;
}

.footer-minimal {
    background: var(--text-primary);
    padding: 2rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
}

.footer-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
}

.footer-mark {
    width: 34px;
    height: 34px;
    border-radius: 6px;
}

/* Animations */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid-editorial {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .sidebar-status {
        margin-top: 1rem;
        display: flex;
        gap: 2rem;
    }
    .hero-main h1 {
        margin-bottom: 3rem;
    }
    .hero-narrative {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .services-masonry {
        grid-template-columns: 1fr;
    }
    .large-card, .small-card {
        grid-column: span 1;
    }
    .offset-card {
        margin-top: 0;
    }
    .reference-container, .contact-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    .reference-sticky {
        position: static;
    }
    .section-header-split {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    .nav-links-modern {
        display: none; /* Hide for mobile menu overlay */
    }
    .nav-overlay.active {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
    }
    .nav-overlay a {
        font-family: var(--font-serif);
        font-size: 2rem;
    }
    .diagram-nodes {
        grid-template-columns: 1fr;
    }
    .hero-editorial {
        padding-top: 20vh;
    }
    .footer-flex {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .footer-flex p {
        margin: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
    .reveal-on-scroll {
        opacity: 1;
        transform: none;
    }
}