:root {
    --bg-color: #050505;
    --text-color: #f0f0f0;
    --accent-color: #00f0ff;
    --accent-glow: rgba(0, 240, 255, 0.3);
    --surface-color: #111;
    --border-color: #333;
    
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    
    --transition-fast: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 5%;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(3rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 1px solid var(--accent-color);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent-color);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border-color: var(--border-color);
}

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

/* Header & Nav (Sticky) */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 0;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    padding: 1rem 0;
    background: rgba(5, 5, 5, 0.85);
    border-bottom-color: var(--border-color);
}

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

.logo img {
    height: 30px;
}

.main-nav {
    display: flex;
    gap: 2rem;
}

.main-nav a {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.7;
    transition: opacity 0.3s;
    position: relative;
}

.main-nav a:hover, .main-nav a.active {
    opacity: 1;
    color: var(--accent-color);
}

/* Page Transition Mask */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-color);
    z-index: 9999;
    transform-origin: bottom;
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.page-transition.is-loaded {
    transform: scaleY(0);
}

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }

/* Animations & States */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.scroll-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Split Text Animation */
.word {
    display: inline-block;
    overflow: hidden;
    vertical-align: bottom;
}
.word span {
    display: inline-block;
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.word.is-visible span {
    transform: translateY(0);
}

/* Page Structures */
main {
    padding-top: clamp(100px, 15vh, 150px); padding-bottom: clamp(60px, 10vh, 100px);
}

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 70vh;
}
.hero-ctas {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
}
.parallax-img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.2);
    border: 1px solid var(--border-color);
}

/* Matrix */
.capabilities { margin-top: clamp(60px, 10vw, 100px); }
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}
.matrix-card {
    background: var(--surface-color);
    padding: 3rem 2rem;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
    transform-style: preserve-3d;
}
.matrix-card:hover {
    border-color: var(--accent-color);
}
.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 2rem;
}

/* SVG Stroke Animation */
.draw-svg path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    transition: stroke-dashoffset 2s ease-in-out;
}
.draw-svg.is-visible path {
    stroke-dashoffset: 0;
}

/* Work Grid */
.featured-work { margin-top: clamp(60px, 10vw, 100px); }
.work-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}
.work-item {
    display: block;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}
.work-item img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.5s, transform 0.5s;
}
.work-item:hover img {
    filter: grayscale(0%);
    transform: scale(1.05);
}
.work-meta {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    background: linear-gradient(transparent, #000);
}

/* Methodology */
.methodology {
    margin-top: clamp(60px, 10vw, 100px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.methodology img {
    filter: grayscale(80%) sepia(20%) hue-rotate(180deg);
}

/* Testimonials */
.testimonials {
    margin-top: clamp(60px, 10vw, 100px);
    text-align: center;
    padding: 5rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.testimonials blockquote {
    font-size: 2rem;
    font-weight: 300;
    max-width: 800px;
    margin: 0 auto 2rem;
}
.testimonials cite {
    color: var(--accent-color);
    font-style: normal;
    letter-spacing: 0.1em;
}

/* Services Page */
.page-header { margin-bottom: 5rem; text-align: center; }
.layer { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; margin-bottom: 8rem; }
.layer.reverse { direction: rtl; }
.layer.reverse .layer-content { direction: ltr; }
.service-list { list-style: none; margin-top: 2rem; }
.service-list li { margin-bottom: 1rem; padding-left: 1.5rem; position: relative; }
.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    background: var(--accent-color);
}
.layer-visual img { filter: grayscale(100%); border: 1px solid var(--border-color); }
.flow-container { display: flex; align-items: center; justify-content: space-between; margin-top: 4rem; overflow-x: auto; padding-bottom: 2rem; }
.flow-node { padding: 1rem 2rem; border: 1px solid var(--accent-color); color: var(--accent-color); }
.flow-line { flex-grow: 1; height: 1px; background: var(--border-color); margin: 0 1rem; position: relative; }
.flow-line::after { content: ''; position: absolute; right: 0; top: -3px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-color); }

/* Case Studies Page */
.cases-list { display: flex; flex-direction: column; gap: 4rem; }
.case-card { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--border-color); background: var(--surface-color); }
.case-card img { height: 100%; object-fit: cover; filter: grayscale(100%); }
.case-content { padding: 4rem; }
.case-details { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.5rem; }
.detail-block strong { color: var(--accent-color); display: block; margin-bottom: 0.5rem; }

/* Insights Page */
.filter-bar { display: flex; gap: 1rem; margin-bottom: 3rem; justify-content: center; }
.filter-btn { background: transparent; color: var(--text-color); border: 1px solid var(--border-color); padding: 0.5rem 1.5rem; cursor: pointer; transition: all 0.3s; }
.filter-btn.active, .filter-btn:hover { border-color: var(--accent-color); color: var(--accent-color); }
.insights-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.insight-card { border: 1px solid var(--border-color); background: var(--surface-color); transition: border-color 0.3s; }
.insight-card:hover { border-color: var(--accent-color); }
.insight-img img { height: 250px; width: 100%; object-fit: cover; filter: grayscale(100%); }
.insight-content { padding: 2rem; }
.category-tag { font-size: 0.8rem; color: var(--accent-color); text-transform: uppercase; letter-spacing: 0.1em; }
.read-more { display: inline-flex; align-items: center; margin-top: 1.5rem; color: var(--text-color); transition: color 0.3s; }
.read-more .arrow { margin-left: 0.5rem; transition: transform 0.3s; }
.insight-card:hover .read-more { color: var(--accent-color); }
.insight-card:hover .arrow { transform: translateX(5px); }

/* About Page */
.about-hero { text-align: center; margin-bottom: 8rem; }
.hero-image { margin-top: 4rem; }
.hero-image img { width: 100%; height: 500px; object-fit: cover; filter: grayscale(100%); border: 1px solid var(--border-color); }
.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 4rem; }
.principle { border: 1px solid var(--border-color); padding: 3rem 2rem; background: var(--surface-color); }
.principle-number { font-size: 3rem; color: var(--accent-color); opacity: 0.5; margin-bottom: 1rem; font-weight: 300; }
.working-model { margin-top: 8rem; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.large-svg { width: 100%; max-width: 400px; margin: 0 auto; }

/* Contact Page */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.huge-email { display: inline-block; font-size: clamp(1.35rem, 2.3vw, 2.1rem); color: var(--accent-color); margin-top: 1rem; word-break: keep-all; white-space: nowrap; }
.futuristic-form { background: var(--surface-color); padding: 3rem; border: 1px solid var(--border-color); }
.form-group { margin-bottom: 2rem; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--text-color); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }
.form-group input, .form-group textarea { width: 100%; background: transparent; border: none; border-bottom: 1px solid var(--border-color); color: var(--text-color); padding: 0.5rem 0; font-family: inherit; font-size: 1rem; transition: border-color 0.3s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-bottom-color: var(--accent-color); }
.submit-btn { width: 100%; border: none; }

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    margin-top: clamp(60px, 10vw, 100px);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
}
.footer-brand img {
    height: 30px;
    margin-bottom: 1rem;
    filter: grayscale(100%);
    opacity: 0.5;
}
.footer-brand p {
    color: #888;
}
.footer-contact p {
    color: #888;
    margin-bottom: 0.5rem;
}
.email-link {
    color: var(--accent-color);
    font-size: 1.2rem;
}
.footer-bottom {
    text-align: center;
    color: #555;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
    .hero, .methodology, .layer, .case-card, .working-model, .contact-layout { grid-template-columns: 1fr; gap: 2rem; }
    .layer-visual, .hero-visual, .method-visual, .case-image { order: -1; }
    .matrix-grid, .principles-grid {
        grid-template-columns: 1fr;
    }
    .layer.reverse .layer-visual {
        grid-row: 1;
    }
}
@media (max-width: 600px) {
    .work-grid, .insights-grid {
        grid-template-columns: 1fr;
    }
    .main-nav { display: flex; overflow-x: auto; max-width: 100%; white-space: nowrap; padding-bottom: 10px; gap: 1rem; scrollbar-width: none; } .main-nav::-webkit-scrollbar { display: none; }
    .header-inner { justify-content: center; }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
    .scroll-reveal { opacity: 1; transform: none; }
    .word span { transform: none; }
    .page-transition { display: none; }
    .draw-svg path { stroke-dashoffset: 0; }
}

/* --- layout fix pack (2026-03-17) --- */
.split-text { display:block; }
.tilt-card { will-change: transform; }
.services-page, .cases-page, .insights-page, .about-page, .contact-page { display:block; }
.services-layers, .insights-container, .process-flow, .philosophy { margin-top: clamp(40px, 6vw, 80px); }
.hero-text, .hero-content, .method-content, .model-content, .model-visual, .direct-contact, .contact-info { width: 100%; }
.contact-form-container { margin-top: 2rem; }


/* contact default layout stability */
main.contact-page {
  padding-top: clamp(140px, 20vh, 190px);
  min-height: auto;
}
.contact-page .contact-layout { align-items: start; }
.contact-page .futuristic-form { box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
@media (max-width: 1200px){
  .huge-email { white-space: normal; overflow-wrap: anywhere; }
}
@media (max-width: 900px){
  main.contact-page { padding-top: 130px; }
  .contact-page .contact-layout { gap: 1.5rem; }
}