:root {
    --color-paper: #f4f0e7;
    --color-ink: #171815;
    --color-accent: #c7ff4a;
    
    --font-ui: 'Instrument Sans', sans-serif;
    --font-heading-em: 'Newsreader', serif;

    --h1-size: clamp(46px, 5.5vw, 84px);
    --h2-size: clamp(38px, 4.5vw, 72px);
    --border-divider: 1px solid var(--color-ink);
    --radius-max: 6px;
}

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

body {
    background-color: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-ui);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* === TYPOGRAPHY === */
h1 {
    font-size: var(--h1-size);
    font-weight: 520;
    line-height: 0.91;
    letter-spacing: 0;
    margin-bottom: 32px;
}

h2 {
    font-size: var(--h2-size);
    font-weight: 520;
    line-height: 0.91;
    letter-spacing: 0;
    margin-bottom: 24px;
}

em {
    font-family: var(--font-heading-em);
    font-style: italic;
    font-weight: 400;
}

p {
    font-size: clamp(16px, 1.2vw, 18px);
    line-height: 1.4;
    max-width: 440px;
    margin-bottom: 40px;
}

/* === BUTTONS & ACCESSIBILITY === */
.btn {
    display: inline-block;
    padding: 16px 32px;
    background-color: var(--color-ink);
    color: var(--color-paper);
    border: none;
    border-radius: var(--radius-max);
    font-family: var(--font-ui);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s, color 0.2s;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

.btn.accent {
    background-color: var(--color-accent);
    color: var(--color-ink);
}

/* === NAVIGATION === */
.main-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 32px 40px;
    z-index: 100;
}

.brand {
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.05em;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-paper);
    font-size: 14px;
    margin-left: 24px;
}

/* === HERO SECTION === */
.hero-section {
    position: relative;
    width: 100%;
    height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 40px;
}

.hero-content {
    width: min(610px, 46vw);
    position: relative;
    z-index: 10;
}

.hero-footer {
    position: absolute;
    bottom: 40px;
    left: 40px;
    display: flex;
    flex-direction: column;
    font-size: 12px;
    opacity: 0.7;
    gap: 4px;
}

/* =========================================================
   6. EDITORIAL SECTIONS (01 & 02)
   ========================================================= */
.editorial-section {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 40px;
    color: var(--color-paper);
}

.editorial-section .content-left,
.editorial-section .content-right {
    flex: 1;
}

.editorial-section.reverse {
    flex-direction: row-reverse;
}

.editorial-section h2 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--color-paper);
}

.editorial-section p {
    font-size: 1.25rem;
    line-height: 1.6;
    max-width: 500px;
    color: rgba(244, 240, 231, 0.85);
}

/* =========================================================
   7. CLOSURE SECTION
   ========================================================= */
.closure-section {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 40px;
    color: var(--color-paper);
}

.closure-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.closure-content h2 {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.03em;
}

.closure-content p {
    font-size: 1.5rem;
    color: rgba(244, 240, 231, 0.85);
}

/* =========================================================
   8. FOOTER
   ========================================================= */
.site-footer {
    background-color: var(--color-ink);
    color: var(--color-paper);
    padding: 80px 40px 40px;
    position: relative;
    z-index: 10;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(244, 240, 231, 0.1);
}

.footer-brand h2 {
    font-size: 2rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(244, 240, 231, 0.6);
    font-size: 1rem;
    max-width: 300px;
    line-height: 1.5;
}

.footer-links {
    display: flex;
    gap: 80px;
    flex-wrap: wrap;
}

.link-column {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.link-column h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(244, 240, 231, 0.4);
    margin-bottom: 8px;
}

.link-column a {
    color: rgba(244, 240, 231, 0.8);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.link-column a:hover {
    color: var(--color-paper);
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(244, 240, 231, 0.5);
    font-size: 0.875rem;
}

.social-links a {
    color: rgba(244, 240, 231, 0.5);
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    color: var(--color-paper);
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        gap: 40px;
    }
    .footer-links {
        gap: 40px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

/* === SCROLL SEQUENCE === */
.scroll-sequence-wrapper {
    position: relative;
    width: 100%;
    background-color: var(--color-ink);
}

.sequence-container {
    position: sticky;
    top: 0;
    width: 100%;
    min-height: 100svh;
    z-index: 1;
    overflow: hidden;
}

#sequence-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.sequence-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(90deg, rgba(244, 240, 231, 0.85), rgba(244, 240, 231, 0.45) 45%, transparent 75%);
    z-index: 1;
    will-change: opacity;
}

.sequence-content {
    position: relative;
    z-index: 2;
    width: 100%;
    pointer-events: none;
    margin-top: -100svh;
}

.seq-section {
    height: 150vh;
    display: flex;
    align-items: center;
    padding: 0 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.seq-text {
    color: var(--color-paper);
    max-width: 500px;
}

/* === ANIMATIONS === */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.75s ease-out, transform 0.75s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Prevent animations if requested by OS */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* === MOBILE BREAKPOINT === */
@media (max-width: 760px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        width: auto;
        position: absolute;
        left: 22px;
        right: 22px;
        bottom: 86px;
    }
    
    .hero-footer {
        display: none;
    }
    
    h1 {
        font-size: clamp(40px, 12vw, 56px);
    }
    
    .editorial-geometry {
        grid-template-columns: 1fr;
    }
    
    .editorial-section {
        padding: 80px 22px;
    }
}

/* =========================================================
   9. COMPONENTS & BUTTONS
   ========================================================= */
.btn-primary {
    display: inline-block;
    padding: 20px 48px;
    background-color: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-ui);
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    background-color: #ffffff;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}