/* --- CSS Reset & Variables --- */
:root {
    /* Mondrian Palette */
    --mondrian-red: #da251d;
    --mondrian-blue: #004b87;
    --mondrian-yellow: #fad105;
    --mondrian-black: #080808;
    --mondrian-white: #fcfcfc;
    
    /* Structure */
    --border-width: 4px;
    --border-style: solid;
    --border-color: var(--mondrian-black);
    --border: var(--border-width) var(--border-style) var(--border-color);
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--mondrian-white);
    color: var(--mondrian-black);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
    border: var(--border);
    margin: 20px;
}

/* --- Typography --- */
h1, h2, h3, h4, .brand {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

h1 { font-size: clamp(3rem, 6vw, 5rem); margin-bottom: 1.5rem; }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); margin-bottom: 1.5rem; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; }
p { font-size: 1.125rem; color: #333; margin-bottom: 1.5rem; }

.text-blue { color: var(--mondrian-blue); }
.text-red { color: var(--mondrian-red); }
.text-yellow { color: var(--mondrian-yellow); }
.text-light { color: var(--mondrian-white); }
.text-light p { color: #ccc; }
.text-light-gray { color: #777; }
.fw-bold { font-weight: 700; }

/* --- Layout & Borders --- */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6rem 2rem;
}
.max-w { max-width: 800px; margin-inline: auto; }
.text-center { text-align: center; }

.section-border-bottom { border-bottom: var(--border); }
.border-right { border-right: var(--border); }
.border-left { border-left: var(--border); }
.border-top { border-top: var(--border); }
.border-all { border: var(--border); }
.border-light { border: var(--border-width) var(--border-style) rgba(255,255,255,0.2); }

.bg-dark { background-color: var(--mondrian-black); }
.bg-red { background-color: var(--mondrian-red); }
.bg-blue { background-color: var(--mondrian-blue); }
.bg-yellow { background-color: var(--mondrian-yellow); }
.bg-black { background-color: var(--mondrian-black); }
.bg-white { background-color: var(--mondrian-white); }

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 700;
    text-decoration: none;
    border: var(--border);
    transition: all 0.3s ease;
    cursor: pointer;
}
.btn-primary {
    background-color: var(--mondrian-black);
    color: var(--mondrian-white);
}
.btn-primary:hover {
    background-color: var(--mondrian-white);
    color: var(--mondrian-black);
}
.btn-secondary {
    background-color: var(--mondrian-white);
    color: var(--mondrian-black);
}
.btn-secondary:hover {
    background-color: var(--mondrian-blue);
    color: var(--mondrian-white);
}
.btn-large {
    font-size: 1.25rem;
    padding: 1rem 2rem;
}

/* --- Mondrian Grid System --- */
.mondrian-container {
    display: grid;
    gap: var(--border-width);
    background-color: var(--mondrian-black);
    border: var(--border);
}
.cell {
    background-color: var(--mondrian-white);
    padding: 2.5rem;
    transition: transform 0.3s ease;
}
.cell:hover {
    transform: translate(-4px, -4px);
    box-shadow: 4px 4px 0 var(--mondrian-black);
}
.cell-white { background-color: var(--mondrian-white); }
.cell-border { border: var(--border); }

/* --- Navigation --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--border);
    position: sticky;
    top: 20px;
    background-color: var(--mondrian-white);
    z-index: 100;
}
.nav-brand {
    padding: 1.5rem 2rem;
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1.5rem;
    text-transform: uppercase;
}
.nav-brand a { text-decoration: none; color: var(--mondrian-black); }
.nav-links {
    display: flex;
    list-style: none;
    flex-grow: 1;
    justify-content: center;
}
.nav-links li > a {
    display: block;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--mondrian-black);
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
}
.nav-links li > a:hover {
    background-color: var(--mondrian-yellow);
}
.nav-cta {
    padding: 1rem 2rem;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 1rem;
    flex-direction: column;
    gap: 5px;
}
.hamburger span {
    display: block;
    width: 28px;
    height: 4px;
    background-color: var(--mondrian-black);
    transition: transform 0.3s ease;
}
.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(6px, -6px); }

/* Nav Dropdowns (Improvement) */
.dropdown {
    position: relative;
}
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: -4px; /* Align with border */
    background-color: var(--mondrian-white);
    border: var(--border);
    list-style: none;
    min-width: 200px;
}
.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
    display: block;
}
.dropdown-menu li {
    border-bottom: var(--border);
}
.dropdown-menu li:last-child {
    border-bottom: none;
}
.dropdown-menu a {
    padding: 1rem 1.5rem;
}
.dropdown-menu a:hover {
    background-color: var(--mondrian-blue);
    color: var(--mondrian-white);
}

/* --- Hero Section --- */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 80vh;
}
.hero-content {
    padding: 6rem 4rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    border-right: var(--border);
}
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border: var(--border);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    align-self: flex-start;
    margin-bottom: 2rem;
    background-color: var(--mondrian-yellow);
}
.hero-anchors {
    margin-top: auto;
    display: flex;
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: var(--border-width) solid #000;
}
.hero-anchors a {
    color: var(--mondrian-black);
    font-weight: 600;
    text-transform: uppercase;
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 0.875rem;
}
.hero-anchors a:hover { color: var(--mondrian-blue); }

.hero-visual {
    background-color: var(--mondrian-black);
}
.visual-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 2fr 1fr;
    gap: var(--border-width);
    height: 100%;
}
.v-cell { background-color: var(--mondrian-white); }
.v-red { background-color: var(--mondrian-red); grid-column: 1; grid-row: 1; }
.v-blue { background-color: var(--mondrian-blue); grid-column: 2; grid-row: 2/4; }
.v-yellow { background-color: var(--mondrian-yellow); grid-column: 1; grid-row: 3; }

/* --- Values / Why Us --- */
.values { padding: 6rem 2rem; background-color: #f4f4f4; }
.values .mondrian-container {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1400px;
    margin: 0 auto;
}
.value-card {
    padding: 0;
    display: flex;
    flex-direction: column;
}
.card-top-bar {
    height: 16px;
    width: 100%;
    border-bottom: var(--border);
}
.bar-red { background-color: var(--mondrian-red); }
.bar-yellow { background-color: var(--mondrian-yellow); }
.bar-blue { background-color: var(--mondrian-blue); }
.card-content { padding: 2rem; }
.icon { margin-bottom: 1.5rem; }

/* --- Services Section --- */
.services { background-color: var(--mondrian-white); }
.services-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 1400px;
    margin: 2rem auto 0;
}
.service-card { padding: 0; display: flex; flex-direction: column; }
.service-num {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 3rem;
    color: rgba(0,0,0,0.08);
    display: block;
    margin-bottom: 0.5rem;
    line-height: 1;
}

/* --- Articles --- */
.articles-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
    gap: 2rem;
}
.header-text p { margin-bottom: 0; }

/* Newsletter Form (Improvement) */
.newsletter-box {
    background-color: var(--mondrian-black);
    padding: 1.5rem;
    flex-shrink: 0;
    width: 400px;
}
.newsletter-box h4 {
    color: var(--mondrian-white);
    margin-bottom: 1rem;
    font-size: 1rem;
}
.newsletter-form {
    display: flex;
}
.newsletter-form input {
    flex-grow: 1;
    padding: 0.75rem;
    border: var(--border);
    border-right: none;
    font-family: var(--font-body);
    outline: none;
}
.newsletter-form button {
    border-left: var(--border);
}

.articles-grid { grid-template-columns: repeat(3, 1fr); }
.article-card { padding: 0; display: flex; flex-direction: column; }
.article-image-container {
    border-bottom: var(--border);
    aspect-ratio: 16/9;
    overflow: hidden;
}
.article-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.2);
    transition: filter 0.3s ease;
}
.article-card:hover .article-image {
    filter: grayscale(0%);
}
.article-content { padding: 2rem; flex-grow: 1; background-color: var(--mondrian-white); }
.category {
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: var(--mondrian-red);
    display: block;
    margin-bottom: 1rem;
}
.article-content h3 { color: var(--mondrian-black); }

/* --- Team --- */
.team-grid {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 4rem;
}
.team-member { padding: 0; }
.member-photo {
    border-bottom: var(--border);
    aspect-ratio: 1;
    overflow: hidden;
}
.bw-filter {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: transform 0.5s ease;
}
.team-member:hover .bw-filter {
    transform: scale(1.05);
}
.member-info { padding: 1.5rem; background-color: var(--mondrian-white); }
.member-info p { margin-bottom: 0; font-size: 1rem; color: #666; }

/* --- Process --- */
.process-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}
.process-step { display: flex; flex-direction: column; }
.step-num {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 3rem;
    padding: 1rem;
    border: var(--border);
    border-color: var(--mondrian-white);
    text-align: center;
    border-bottom: none;
}
.step-content {
    padding: 2rem;
    flex-grow: 1;
}
.step-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
}
.duration-label {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
}
.step-content h3 { margin-bottom: 0; }

/* --- Success Stories --- */
.stories-grid {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 4rem;
}
.story-card { padding: 0; text-align: left; }
.story-image-wrap {
    border-bottom: var(--border);
    aspect-ratio: 4/3;
    overflow: hidden;
}
.story-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.3s;
}
.story-card:hover .story-image { filter: grayscale(0%); }
.read-more {
    display: inline-block;
    margin-top: 1rem;
    font-weight: 700;
    color: var(--mondrian-black);
    text-decoration: none;
    text-transform: uppercase;
    transition: color 0.2s ease;
}
.read-more:hover {
    color: var(--mondrian-red);
}

/* Client Logos (Improvement) */
.mt-large { margin-top: 4rem; }
.mb-small { margin-bottom: 1rem; }
.pt-medium { padding-top: 2rem; }
.logo-grid {
    display: flex;
    justify-content: center;
    gap: 4rem;
    align-items: center;
    flex-wrap: wrap;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #999;
}

/* --- CTA --- */
.cta { padding: 6rem 2rem; }
.mondrian-cta-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: auto auto;
    background-color: var(--mondrian-black);
    gap: var(--border-width);
}
.cta-content {
    grid-column: 1;
    grid-row: 1/3;
    padding: 6rem 4rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.cta-content h2 { font-size: 4rem; }
.cta-accent { min-height: 100px; }
.cta-accent.bg-red { grid-column: 2; grid-row: 1; border-bottom: var(--border); border-color: var(--mondrian-black); }
.cta-accent.bg-yellow { grid-column: 2; grid-row: 2; }
.cta-accent.bg-blue { grid-column: 1/3; height: 32px; }

/* --- Footer --- */
.footer {
    padding: 0 2rem 2rem 2rem;
}
.footer-decoration {
    display: flex;
    height: 24px;
    border: var(--border);
    margin-bottom: 4rem;
}
.fd-cell { flex-grow: 1; border-right: var(--border); }
.fd-cell:last-child { border-right: none; }
.fd-cell:nth-child(1) { flex-grow: 2; }
.fd-cell:nth-child(4) { flex-grow: 3; }

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}
.footer-col ul { list-style: none; }
.footer-col a { color: #666; text-decoration: none; }
.footer-col a:hover { color: var(--mondrian-black); text-decoration: underline; }
.ai-badge { text-align: center; display: inline-block; }
.p-small { padding: 1rem; }
.pl-medium { padding-left: 2rem; }
.footer-col li { margin-bottom: 0.5rem; }

/* --- Scroll Offset for Sticky Nav --- */
section[id] {
    scroll-margin-top: 80px;
}

/* --- Fade-In Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Subpage Styles --- */

/* Clickable cards */
a.article-card, a.team-member { text-decoration: none; color: inherit; display: block; }
a.article-card:hover, a.team-member:hover { transform: translateY(-2px); transition: transform 0.2s ease; }

/* Article Page */
.article-page { padding-top: 1rem; max-width: 1400px; margin: 0 auto; }
.article-hero { display: grid; grid-template-columns: 1fr 1fr; border: var(--border); min-height: 400px; }
.article-hero-content { padding: 3rem; display: flex; flex-direction: column; justify-content: center; border-right: var(--border); }
.article-hero-content h1 { font-size: clamp(2rem, 4vw, 3.5rem); margin: 1rem 0; }
.article-hero-image { overflow: hidden; min-height: 300px; }
.article-hero-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.article-meta { display: flex; gap: 0.5rem; color: #666; font-size: 0.9rem; }
.meta-sep { color: #ccc; }
.article-body { padding: 3rem 1.5rem; }
.article-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 4rem; max-width: 1100px; margin: 0 auto; }
.article-text h2 { margin-top: 2.5rem; margin-bottom: 1rem; }
.article-text h3 { margin-top: 2rem; margin-bottom: 0.75rem; }
.article-text p { margin-bottom: 1rem; line-height: 1.8; }
.article-text ul { padding-left: 1.5rem; margin-bottom: 1.5rem; }
.article-text li { margin-bottom: 0.5rem; line-height: 1.7; }
.article-text .lead { font-size: 1.2rem; line-height: 1.8; color: #333; }
.article-callout { margin: 2rem 0; }
.article-cta { margin: 3rem 0; padding: 2rem; text-align: center; }
.article-cta h3 { margin-bottom: 0.5rem; }
.article-cta p { margin-bottom: 1rem; }
.article-sidebar { position: sticky; top: 100px; align-self: start; }
.sidebar-section { padding: 1.5rem; margin-bottom: 1.5rem; }
.sidebar-section h4 { margin-bottom: 1rem; }
.sidebar-section ul { list-style: none; }
.sidebar-section li { margin-bottom: 0.75rem; }
.sidebar-section a { color: var(--mondrian-blue); text-decoration: none; }
.sidebar-section a:hover { text-decoration: underline; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag { background: #f0f0f0; border: 2px solid var(--mondrian-black); padding: 0.25rem 0.75rem; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; }

/* Story Page */
.story-page { padding-top: 1rem; max-width: 1400px; margin: 0 auto; }
.story-hero { display: grid; grid-template-columns: 1fr 1fr; border: var(--border); min-height: 400px; }
.story-hero-content { padding: 3rem; display: flex; flex-direction: column; justify-content: center; border-right: var(--border); }
.story-hero-content h1 { font-size: clamp(2rem, 4vw, 3rem); margin: 1rem 0; }
.story-client { font-size: 1.2rem; color: #666; font-weight: 600; }
.story-hero-image { overflow: hidden; min-height: 300px; }
.story-hero-image img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); display: block; }
.story-body { padding: 3rem 1.5rem; }
.story-metrics { grid-template-columns: repeat(3, 1fr); margin-bottom: 3rem; }
.metric-card { padding: 2rem; text-align: center; }
.metric-value { font-family: var(--font-heading); font-weight: 900; font-size: 3rem; display: block; line-height: 1; }
.metric-label { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; color: #666; margin-top: 0.5rem; display: block; }
.story-content { max-width: 800px; margin: 0 auto; }
.story-section { margin-bottom: 2.5rem; }
.story-section h2 { margin-bottom: 1rem; }
.story-section p { margin-bottom: 1rem; line-height: 1.8; }
.story-section ul { padding-left: 1.5rem; margin-bottom: 1rem; }
.story-section li { margin-bottom: 0.5rem; line-height: 1.7; }
.story-quote { margin: 2rem 0; }
.story-quote blockquote { padding: 2rem; }
.story-quote p { font-size: 1.2rem; font-style: italic; line-height: 1.8; margin-bottom: 1rem; }
.story-quote cite { font-style: normal; font-weight: 600; color: #666; }
.story-nav { display: flex; justify-content: space-between; margin-top: 3rem; padding-top: 2rem; border-top: var(--border); max-width: 800px; margin-left: auto; margin-right: auto; }

/* Team Page */
.team-page { padding-top: 1rem; max-width: 1400px; margin: 0 auto; }
.team-hero { display: grid; grid-template-columns: 1fr 1fr; border: var(--border); min-height: 400px; }
.team-photo { overflow: hidden; min-height: 300px; }
.team-photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); display: block; min-height: 400px; }
.team-intro { padding: 3rem; display: flex; flex-direction: column; justify-content: center; }
.team-intro h1 { font-size: clamp(2rem, 4vw, 3.5rem); margin: 0.5rem 0 1rem; }
.team-intro .lead { font-size: 1.1rem; line-height: 1.7; margin-bottom: 1.5rem; }
.team-links { display: flex; gap: 1rem; }
.team-body { padding: 3rem 1.5rem; }
.team-details { max-width: 800px; margin: 0 auto; }
.detail-section { margin-bottom: 2.5rem; }
.detail-section h2 { margin-bottom: 1rem; }
.detail-section p { line-height: 1.8; margin-bottom: 1rem; }
.detail-section ul { padding-left: 1.5rem; }
.detail-section li { margin-bottom: 0.5rem; line-height: 1.7; }
.team-nav { display: flex; justify-content: space-between; padding: 2rem 1.5rem; border-top: var(--border); margin-bottom: 2rem; max-width: 800px; margin-left: auto; margin-right: auto; }

/* Btn secondary for subpages */
.btn-secondary { background: var(--mondrian-white); color: var(--mondrian-black); border: var(--border); padding: 0.75rem 1.5rem; font-weight: 700; text-transform: uppercase; text-decoration: none; display: inline-block; cursor: pointer; }
.btn-secondary:hover { background: #f0f0f0; }

/* Text color helpers */
.text-red { color: var(--mondrian-red); }
.text-blue { color: var(--mondrian-blue); }
.text-yellow { color: #b8a000; }

/* --- Responsive Layout Adjustments --- */
@media (max-width: 1024px) {
    .hero-grid, .mondrian-cta-grid { grid-template-columns: 1fr; }
    .hero-content { border-right: none; border-bottom: var(--border); }
    .values .mondrian-container, .articles-grid, .team-grid, .stories-grid, .process-timeline, .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-content { grid-template-columns: 1fr 1fr; }
    .footer-col.border-left { border-left: none; padding-left: 0; }
    .articles-header { flex-direction: column; align-items: flex-start; }
    .newsletter-box { width: 100%; }
    .article-hero, .story-hero, .team-hero { grid-template-columns: 1fr; }
    .article-hero-content, .story-hero-content { border-right: none; border-bottom: var(--border); }
    .article-layout { grid-template-columns: 1fr; }
    .story-metrics { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .values .mondrian-container, .articles-grid, .team-grid, .stories-grid, .process-timeline, .services-grid {
        grid-template-columns: 1fr;
    }
    .hamburger { display: flex; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--mondrian-white); border-bottom: var(--border); }
    .nav-links.open { display: flex; }
    .nav-links li > a { border-bottom: var(--border); }
    .logo-grid { gap: 2rem; }
    body { margin: 10px; }
    .cta-content h2 { font-size: clamp(2rem, 5vw, 4rem); }
    .story-metrics { grid-template-columns: 1fr; }
    .story-nav, .team-nav { flex-direction: column; gap: 1rem; }
}