/* =============================================================================
   KOLLEKTIV 2026 — Global Stylesheet
   Sections:
     1. Tokens (CSS custom properties)
     2. Reset & Base
     3. Accessibility
     4. UI Chrome (cursor, grain, scroll progress, back-to-top, loader)
     5. Navigation
     6. Typography utilities
     7. Animations & scroll-reveal
     8. Homepage — Hero
     9. Homepage — Philosophy
    10. Homepage — Work Grid
    11. Homepage — Clients Marquee
    12. Homepage — Capabilities
    13. Homepage — Contact
    14. Case Study — Hero
    15. Case Study — Metadata Strip
    16. Case Study — Content Sections
    17. Case Study — Gallery
    18. Case Study — Testimonial
    19. Case Study — Results
    20. Case Study — CTA
    21. Case Study — Prev/Next Nav
    22. Footer
    23. Responsive
   ============================================================================= */

/* ─── 1. Tokens ──────────────────────────────────────────────────────────── */

:root {
    --bg-color:        #F4F2ED;
    --text-color:      #1a1a1a;
    --text-muted:      #6b6b6b;
    --border-color:    rgba(0, 0, 0, 0.12);
    --success-color:   #2d7a4f;
    --error-color:     #c53030;

    --font-serif:      'Cormorant Garamond', serif;
    --font-sans:       'Inter', sans-serif;

    --container-pad:   6vw;
    --spacing:         8px;
}

/* ─── 2. Reset & Base ────────────────────────────────────────────────────── */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none;
}

html { scroll-behavior: smooth; }

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

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

a { color: inherit; }

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.05;
}

/* ─── 3. Accessibility ───────────────────────────────────────────────────── */

.skip-link {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.skip-link:focus {
    position: fixed;
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    padding: 8px 16px;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--text-color);
    color: var(--bg-color);
    z-index: 100000;
}

/* ─── 4. UI Chrome ───────────────────────────────────────────────────────── */

/* Custom cursor */
.cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 1px solid var(--text-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease, background-color 0.3s ease;
}
.cursor.hovered {
    width: 50px;
    height: 50px;
    background-color: var(--text-color);
    border-color: transparent;
}
.cursor-dot {
    position: fixed;
    width: 4px;
    height: 4px;
    background-color: var(--text-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10001;
    transform: translate(-50%, -50%);
}

/* Cursor above lightbox overlay */
.lightbox-open .cursor {
    border-color: #fff;
    z-index: 100002;
}
.lightbox-open .cursor.hovered {
    background-color: #fff;
    border-color: transparent;
}
.lightbox-open .cursor-dot {
    background-color: #fff;
    z-index: 100003;
}

/* Grain overlay */
.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* Scroll progress bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--text-color);
    z-index: 10002;
    transition: width 0.1s ease;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 9998;
    cursor: none;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    border-color: var(--text-color);
    transform: translateY(-5px);
}

/* Loader */
.loader {
    position: fixed;
    inset: 0;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}
.loader.hidden { opacity: 0; visibility: hidden; }
.loader-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}
.loader-bar {
    width: 200px;
    height: 1px;
    background: var(--border-color);
    margin-top: 1.5rem;
    position: relative;
    overflow: hidden;
}
.loader-bar::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 0; height: 100%;
    background: var(--text-color);
    animation: loadBar 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ─── 5. Navigation ──────────────────────────────────────────────────────── */

nav {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    padding: calc(var(--spacing) * 3) var(--container-pad);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: background 0.4s ease, backdrop-filter 0.4s ease;
}
nav.scrolled {
    background: rgba(244, 242, 237, 0.95);
    backdrop-filter: blur(10px);
}

.logo {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    text-decoration: none;
    position: relative;
}
.logo::after {
    content: '';
    position: absolute;
    bottom: -5px; left: 0;
    width: 0; height: 1px;
    background: currentColor;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.logo:hover::after { width: 100%; }

.nav-links { display: flex; gap: 3rem; }
.nav-links a {
    text-decoration: none;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}
.nav-links a:hover { opacity: 1; }

/* ─── 6. Typography utilities ────────────────────────────────────────────── */

.text-serif   { font-family: var(--font-serif); }
.text-sans    { font-family: var(--font-sans); }
.italic       { font-style: italic; }
.uppercase    {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--text-muted);
}

/* ─── 7. Animations & Scroll-reveal ─────────────────────────────────────── */

@keyframes revealWord {
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    to { opacity: 1; }
}
@keyframes loadBar {
    to { width: 100%; }
}
@keyframes marquee {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
                transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ─── 8. Hero ────────────────────────────────────────────────────────────── */

.hero {
    min-height: 100vh;
    padding: 180px var(--container-pad) 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-title {
    font-size: clamp(4rem, 10vw, 9rem);
    line-height: 0.95;
    margin-bottom: 2rem;
    max-width: 1400px;
}
.hero-title .line {
    display: block;
    overflow: hidden;
}
.hero-title .word {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    animation: revealWord 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-title .word:nth-child(1) { animation-delay: 0.1s; }
.hero-title .word:nth-child(2) { animation-delay: 0.2s; }
.hero-title .word:nth-child(3) { animation-delay: 0.3s; }

.hero-statement {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.8s;
}

.hero-meta {
    display: flex;
    align-items: center;
    opacity: 0;
    animation: fadeIn 1s ease forwards 1s;
}
.hero-location {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    padding: 0 1.5rem;
    position: relative;
}
.hero-location:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0; top: 50%;
    transform: translateY(-50%);
    width: 1px; height: 30px;
    background: var(--border-color);
}

.scroll-indicator {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    opacity: 0;
    animation: fadeIn 1s ease forwards 1.5s;
}

/* ─── 9. Philosophy ──────────────────────────────────────────────────────── */

.philosophy {
    padding: 150px var(--container-pad);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}
.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}
.philosophy-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    position: sticky;
    top: 100px;
    height: fit-content;
    padding-top: 10px;
}
.philosophy-text {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    line-height: 1.4;
}
.philosophy-text p {
    margin-bottom: 3rem;
    opacity: 0.35;
    transform: scale(0.98);
    letter-spacing: -0.01em;
    max-width: 900px;
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.philosophy-text p.active {
    opacity: 1;
    transform: scale(1);
    letter-spacing: 0;
}
.philosophy-text .highlight { font-style: italic; }

/* ─── 10. Work Grid ──────────────────────────────────────────────────────── */

.work-section {
    padding: 150px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
}
.work-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}
.work-title { font-size: 3rem; }

.work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.work-card-link { text-decoration: none; display: block; }

.work-card-image {
    width: 100%;
    aspect-ratio: 4/5;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background-color: #e8e6e1;
    position: relative;
}
.work-card-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.3) 100%);
    opacity: 0;
    transition: opacity 0.5s ease;
}
.work-card:hover .work-card-image::after { opacity: 1; }
.work-card-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.work-card:hover .work-card-image img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.work-card-info {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}
.work-card:hover .work-card-info { border-bottom-color: var(--text-color); }

.work-card-title {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    color: var(--text-color);
    white-space: nowrap;
    transition: transform 0.3s ease;
}
.work-card:hover .work-card-title { transform: translateX(5px); }

.work-card-location {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    opacity: 0.7;
    white-space: nowrap;
    flex-shrink: 0;
    transition: opacity 0.3s ease;
}
.work-card:hover .work-card-location { opacity: 1; }

/* ─── 11. Clients Marquee ────────────────────────────────────────────────── */

.clients-section {
    padding: 100px 0;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}
.clients-label {
    text-align: center;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 3rem;
}
.marquee-container { width: 100%; overflow: hidden; }
.marquee-track {
    display: flex;
    align-items: center;
    gap: 8vw;
    animation: marquee 50s linear infinite;
    padding: 0 var(--container-pad);
}
.marquee-track:hover { animation-play-state: paused; }

.client-logo {
    flex-shrink: 0;
    height: 60px;
    opacity: 0.35;
    filter: grayscale(100%);
    transition: opacity 0.3s ease, filter 0.3s ease;
}
.client-logo:hover { opacity: 0.8; filter: grayscale(0%); }
.client-logo svg,
.client-logo img { height: 100%; width: auto; object-fit: contain; }

/* ─── 12. Capabilities ───────────────────────────────────────────────────── */

.capabilities {
    padding: 150px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
}
.capabilities-header {
    margin-bottom: 6rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}
.capabilities-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-style: italic;
}
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4rem;
}
.capability-title {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}
.capability-list { list-style: none; }
.capability-list li {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.9;
    opacity: 0.7;
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}
.capability-list li:hover {
    opacity: 1;
    transform: translateX(10px);
    color: var(--text-color);
}

/* ─── 13. Contact ────────────────────────────────────────────────────────── */

.contact-section {
    padding: 150px var(--container-pad) 100px;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 6rem;
    max-width: 1400px;
    margin: 0 auto;
}
.contact-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 2rem;
    display: block;
}
.contact-headline {
    font-size: clamp(3rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 3rem;
}
.contact-email {
    font-size: 1.1rem;
    text-decoration: none;
    display: block;
    margin-bottom: 1rem;
    transition: opacity 0.3s ease;
}
.contact-email:hover { opacity: 0.6; }
.contact-social { display: flex; gap: 1.5rem; }
.contact-social a {
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}
.contact-social a:hover { opacity: 1; text-decoration: underline; }

/* Contact form */
.form-group { margin-bottom: 2rem; position: relative; }
.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem 0;
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-color);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    outline: none;
    transition: border-color 0.3s ease;
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); opacity: 0.5; }
.form-input:focus,
.form-textarea:focus { border-bottom-color: var(--text-color); }
.form-input.error,
.form-textarea.error { border-bottom-color: var(--error-color); }
.form-input.success,
.form-textarea.success { border-bottom-color: var(--success-color); }
.form-textarea { resize: vertical; min-height: 120px; }

.form-error {
    position: absolute;
    bottom: -1.5rem; left: 0;
    font-size: 0.75rem;
    color: var(--error-color);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.form-error.visible { opacity: 1; transform: translateY(0); }

.form-submit {
    margin-top: 2rem;
    padding: 1rem 2.5rem;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--text-color);
    color: var(--bg-color);
    border: none;
    cursor: none;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, background 0.3s ease;
}
.form-submit::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}
.form-submit:hover::before { left: 100%; }
.form-submit:hover { transform: translateX(5px); }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.form-submit.success { background: var(--success-color); }
.form-submit.error   { background: var(--error-color); }

.form-status {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.form-status.visible  { opacity: 1; transform: translateY(0); }
.form-status.success  { color: var(--success-color); }
.form-status.error    { color: var(--error-color); }

/* ─── 14. Case Study — Hero ──────────────────────────────────────────────── */

.project-hero {
    padding: 200px var(--container-pad) 60px;
}
.project-hero-content {
    max-width: 1400px;
    margin: 0 auto;
}
.project-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 3rem;
    transition: color 0.3s ease;
}
.project-back-link:hover { color: var(--text-color); }

.project-title {
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1;
    margin-bottom: 1rem;
}
.project-subtitle {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-style: italic;
    color: var(--text-muted);
    line-height: 1.3;
}
.project-hero-image {
    width: 100%;
    height: 70vh;
    min-height: 500px;
    overflow: hidden;
    margin-top: 3rem;
}
.project-hero-image img { width: 100%; height: 100%; object-fit: cover; }

/* ─── 15. Case Study — Metadata Strip ───────────────────────────────────── */

.project-details {
    padding: 60px var(--container-pad);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.project-details-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}
.detail-item { display: flex; flex-direction: column; gap: 0.75rem; }
.detail-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    font-weight: 500;
}
.detail-value {
    font-family: var(--font-serif);
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.4;
}

/* ─── 16. Case Study — Content Sections ─────────────────────────────────── */

.content-section {
    padding: 100px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
}
.content-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}
.section-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}
.section-content {
    font-family: var(--font-serif);
    font-size: clamp(1.3rem, 2vw, 1.8rem);
    line-height: 1.6;
}
.section-content p { margin-bottom: 2rem; opacity: 0.9; }
.section-content p.highlight {
    font-style: italic;
    opacity: 1;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    border-left: 2px solid var(--text-color);
    padding-left: 2rem;
}

/* ─── 17. Case Study — Gallery ───────────────────────────────────────────── */

.gallery-section {
    padding: 100px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
}
.gallery-header {
    max-width: 1400px;
    margin: 0 auto 4rem;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}
.gallery-title { font-size: 2.5rem; }
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}
.gallery-item { position: relative; overflow: hidden; cursor: none; }
.gallery-item.full-width { grid-column: span 2; }
.gallery-item img {
    width: 100%; height: auto;
    display: block;
    filter: grayscale(20%);
    transition: filter 0.5s ease, transform 0.5s ease;
}
.gallery-item:hover img { filter: grayscale(0%); transform: scale(1.02); }
.gallery-caption {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ─── 18. Case Study — Testimonial ──────────────────────────────────────── */

.testimonial-section {
    padding: 120px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.02);
    text-align: center;
}
.testimonial-content { max-width: 900px; margin: 0 auto; }
.testimonial-quote {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-style: italic;
    line-height: 1.5;
    margin-bottom: 2rem;
}
.testimonial-author {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.testimonial-author strong {
    color: var(--text-color);
    display: block;
    margin-bottom: 0.25rem;
}

/* ─── 19. Case Study — Results ───────────────────────────────────────────── */

.results-section {
    padding: 100px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
}
.results-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}
.results-content {
    font-family: var(--font-serif);
    font-size: clamp(1.3rem, 2vw, 1.8rem);
    line-height: 1.6;
}
.results-content p { margin-bottom: 2rem; opacity: 0.9; }
.results-content p.highlight {
    font-style: italic;
    opacity: 1;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    border-left: 2px solid var(--text-color);
    padding-left: 2rem;
}

/* ─── 20. Case Study — CTA ───────────────────────────────────────────────── */

.cta-section {
    padding: 150px var(--container-pad);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}
.cta-headline {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}
.cta-subhead {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}
.cta-button {
    display: inline-block;
    padding: 1.25rem 3rem;
    background: var(--text-color);
    color: var(--bg-color);
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: transform 0.3s ease, background 0.3s ease;
}
.cta-button:hover { transform: translateY(-3px); background: #000; }

/* ─── 21. Case Study — Prev/Next Nav ────────────────────────────────────── */

.project-nav {
    padding: 120px var(--container-pad);
    border-bottom: 1px solid var(--border-color);
}
.project-nav-grid {
    display: flex;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}
.project-nav-item {
    text-decoration: none;
    flex: 1;
    transition: opacity 0.3s ease;
}
.project-nav-item:hover { opacity: 0.6; }
.project-nav-item.next { text-align: right; }
.project-nav-label {
    display: block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.project-nav-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
}
.project-nav-location {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

/* ─── 22. WeChat QR Overlay ──────────────────────────────────────────────── */

/* The trigger is a <button> — reset it to look like a link */
.wechat-trigger {
    background: none;
    border: none;
    padding: 0;
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    opacity: 0.7;
    cursor: none;
    transition: opacity 0.3s ease;
}
.wechat-trigger:hover { opacity: 1; text-decoration: underline; }

.wechat-overlay {
    position: fixed;
    inset: 0;
    z-index: 110000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.wechat-overlay[hidden] { display: none; }

.wechat-overlay__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}
.wechat-overlay__box {
    position: relative;
    background: var(--bg-color);
    padding: 3rem;
    text-align: center;
    max-width: 320px;
    width: 90%;
    z-index: 1;
}
.wechat-overlay__close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--text-color);
    cursor: none;
    opacity: 0.5;
    transition: opacity 0.2s ease;
}
.wechat-overlay__close:hover { opacity: 1; }
.wechat-overlay__label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}
.wechat-overlay__qr {
    width: 100%;
    height: auto;
    display: block;
}

/* ─── 23. Footer ─────────────────────────────────────────────────────────── */

.footer-bottom {
    padding: 3rem var(--container-pad);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    gap: 2rem;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}
.footer-social a,
.footer-social .wechat-trigger {
    font-size: 0.85rem;
    text-decoration: none;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}
.footer-social a:hover,
.footer-social .wechat-trigger:hover { opacity: 1; }
.footer-location {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}
.copyright {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.4;
}

/* ─── 23. Responsive ─────────────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1200px) {
    .philosophy-grid   { grid-template-columns: 1fr; gap: 3rem; }
    .philosophy-label  { position: static; }
    .work-grid         { grid-template-columns: repeat(2, 1fr); }
    .capabilities-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid      { grid-template-columns: 1fr; gap: 4rem; }
    .project-details-grid { grid-template-columns: repeat(2, 1fr); }
    .content-grid,
    .results-grid      { grid-template-columns: 1fr; gap: 2rem; }
    .gallery-grid      { grid-template-columns: 1fr; }
    .gallery-item.full-width { grid-column: span 1; }
}

/* Mobile */
@media (max-width: 768px) {
    * { cursor: auto; }
    .cursor, .cursor-dot { display: none; }
    .grain-overlay { opacity: 0.015; }
    .nav-links { display: none; }
    .back-to-top { bottom: 20px; right: 20px; width: 45px; height: 45px; }

    .work-grid     { grid-template-columns: 1fr; }
    .work-card-info { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .work-card-title { font-size: 1.5rem; white-space: normal; }
    .work-card-location { white-space: normal; }

    .capabilities-grid { grid-template-columns: 1fr; gap: 3rem; }

    .footer-bottom { flex-direction: column; gap: 1.5rem; text-align: center; }

    .marquee-track { gap: 4vw; animation-duration: 35s; }
    .client-logo   { height: 40px; }

    .philosophy-text p { transform: none; }
    .philosophy-text p.active { transform: none; }

    .project-hero  { padding: 140px var(--container-pad) 40px; }
    .project-hero-image { height: 50vh; min-height: 300px; }
    .project-details-grid { grid-template-columns: 1fr; }
    .project-nav-grid { flex-direction: column; gap: 3rem; }
    .project-nav-item.next { text-align: left; }

    .work-header { flex-direction: column; gap: 1rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .cursor, .cursor-dot, .grain-overlay { display: none; }
}