/* ========================================
   ANTON SUHANOV
   Restraint. Typography. Space.
   ======================================== */

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

:root {
    --paper: #F4F1EC;
    --ink: #161513;
    --ink-soft: rgba(22, 21, 19, 0.55);
    --ink-faint: rgba(22, 21, 19, 0.25);
    --ink-hairline: rgba(22, 21, 19, 0.14);
    --accent: #7A2E1E;
    --serif: 'Fraunces', 'Times New Roman', serif;
    --sans: 'Inter', system-ui, sans-serif;
}

html {
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--serif);
    font-weight: 300;
    overflow-x: hidden;
    line-height: 1.5;
}

::selection {
    background: var(--ink);
    color: var(--paper);
}

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

em {
    font-style: italic;
    font-weight: 200;
}

/* Lenis base */
html.lenis,
html.lenis body {
    height: auto;
}
.lenis.lenis-smooth {
    scroll-behavior: auto !important;
}
.lenis.lenis-smooth [data-lenis-prevent] {
    overscroll-behavior: contain;
}
.lenis.lenis-stopped {
    overflow: clip;
}

/* ============ LOADER — Editorial Masthead ============ */

.loader {
    position: fixed;
    inset: 0;
    background: var(--paper);
    z-index: 100;
    display: grid;
    grid-template-rows: auto 1fr auto;
    padding: 2rem;
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 1.2s;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-top,
.loader-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.loader-meta {
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.loader-count {
    font-variant-numeric: tabular-nums;
    color: var(--ink);
}

.loader-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 0.3em;
}

.loader-word {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(3rem, 10vw, 7rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
    color: var(--ink);
    display: block;
    opacity: 0;
    transform: translateY(16px);
    animation: loaderWordIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.loader-word[data-i="0"] { animation-delay: 0.2s; }
.loader-word[data-i="1"] { animation-delay: 0.5s; }

@keyframes loaderWordIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.loader-rule {
    flex: 1;
    height: 1px;
    background: var(--ink-hairline);
    margin: 0 1.5rem;
    position: relative;
    overflow: hidden;
}

.loader-rule span {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0%;
    background: var(--ink);
    transition: width 0.2s linear;
}

/* ============ FRAME ============ */

.frame {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 50;
}

.frame-corner {
    position: absolute;
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    color: var(--ink-soft);
    text-transform: uppercase;
    padding: 1.75rem 2rem;
}

.frame-corner-tl { top: 0; left: 0; }
.frame-corner-tr { top: 0; right: 0; }
.frame-corner-bl { bottom: 0; left: 0; }
.frame-corner-br { bottom: 0; right: 0; pointer-events: auto; cursor: pointer; }

.frame-corner-br span {
    transition: color 0.4s ease;
}

.frame-corner-br:hover span {
    color: var(--accent);
}

/* ============ INDEX (slide-out) ============ */

.index {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(420px, 90vw);
    background: var(--paper);
    border-left: 1px solid var(--ink-hairline);
    z-index: 60;
    transform: translateX(100%);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 6rem 3rem 3rem;
}

.index.open {
    transform: translateX(0);
}

.index ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.index a {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 1.5rem;
    color: var(--ink);
    display: flex;
    gap: 1.25rem;
    align-items: baseline;
    transition: color 0.3s ease;
}

.index a::before {
    content: attr(data-num);
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    color: var(--ink-faint);
}

.index a:hover {
    color: var(--accent);
}

/* ============ OPUS (Hero) ============ */

.opus {
    min-height: 100vh;
    padding: 6rem 2rem 4rem;
    display: grid;
    grid-template-rows: auto 1fr auto;
    align-content: stretch;
    position: relative;
}

.opus-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-self: start;
    justify-self: end;
    text-align: right;
}

.meta-line {
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.opus-title {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(5rem, 22vw, 22rem);
    line-height: 0.9;
    letter-spacing: -0.04em;
    color: var(--ink);
    align-self: center;
    margin: 0;
}

.opus-line {
    display: block;
}

.opus-line-1 {
    text-align: left;
    margin-left: -0.04em;
}

.opus-line-2 {
    text-align: right;
    margin-top: -0.15em;
    font-style: italic;
    font-weight: 200;
}

.opus-foot {
    display: flex;
    justify-content: space-between;
    align-items: end;
    align-self: end;
    flex-wrap: wrap;
    gap: 1rem;
}

.opus-scroll {
    font-style: italic;
    font-family: var(--serif);
    font-size: 0.85rem;
    text-transform: none;
    letter-spacing: 0.05em;
    color: var(--ink);
    opacity: 0.7;
}

/* ============ CHAPTERS ============ */

.chapter {
    padding: 12rem 2rem;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 6rem;
    max-width: 1400px;
    margin: 0 auto;
    border-top: 1px solid var(--ink-hairline);
}

.chapter-alt {
    grid-template-columns: 2fr 1fr;
}

.chapter-alt .chapter-side {
    order: 2;
    text-align: right;
}

.chapter-alt .chapter-body {
    order: 1;
}

.chapter-side {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: sticky;
    top: 6rem;
    height: fit-content;
}

.chapter-num {
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--ink-soft);
}

.chapter-label {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 200;
    font-size: 2rem;
    color: var(--ink);
    letter-spacing: -0.02em;
}

.chapter-body {
    max-width: 60ch;
}

.chapter-lede {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
    line-height: 1.3;
    letter-spacing: -0.015em;
    color: var(--ink);
    margin-bottom: 3rem;
}

.chapter-body p {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--ink-soft);
    margin-bottom: 1.5rem;
    max-width: 55ch;
}

/* ============ REGISTER (Œuvre list) ============ */

.register {
    list-style: none;
    margin: 2rem 0 0;
}

.register-item {
    display: grid;
    grid-template-columns: 4rem 1fr 1.2fr;
    gap: 2rem;
    align-items: baseline;
    padding: 2rem 0;
    border-top: 1px solid var(--ink-hairline);
    transition: padding 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.register-item:last-child {
    border-bottom: 1px solid var(--ink-hairline);
}

.register-item:hover {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.register-num {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 200;
    font-size: 1rem;
    color: var(--ink-faint);
}

.register-name {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(2rem, 4vw, 3.5rem);
    letter-spacing: -0.02em;
    color: var(--ink);
    line-height: 1;
    transition: color 0.4s ease, font-style 0.4s ease;
}

.register-item:hover .register-name {
    color: var(--accent);
    font-style: italic;
}

.register-desc {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--ink-soft);
    line-height: 1.5;
}

/* ============ STATEMENT ============ */

.statement {
    padding: 16rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
    border-top: 1px solid var(--ink-hairline);
}

.statement p {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(1.75rem, 4vw, 3.5rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 3rem;
}

.statement-attr {
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--ink-soft);
    text-transform: uppercase;
}

/* ============ FOOTER — Colophon ============ */

.footer {
    padding: 8rem 2rem 3rem;
    border-top: 1px solid var(--ink-hairline);
    display: flex;
    flex-direction: column;
    gap: 6rem;
    position: relative;
}

/* Top — numbered header */
.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--ink-hairline);
}

.footer-num {
    font-family: var(--sans);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.footer-label {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    color: var(--ink);
    letter-spacing: -0.01em;
    flex: 1;
}

.footer-kicker {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 300;
    font-size: 1rem;
    color: var(--ink-soft);
}

/* Invitation — signature typographic moment */
.footer-invite {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 4rem 0;
    text-align: left;
}

.footer-invite-line {
    font-family: var(--serif);
    font-weight: 200;
    font-size: clamp(3rem, 7vw, 6rem);
    line-height: 1;
    letter-spacing: -0.03em;
    color: var(--ink);
    margin-bottom: 0.2em;
}

.footer-invite-accent {
    padding-left: 2em;
    color: var(--ink);
}

.footer-invite-accent em {
    color: var(--accent);
}

.footer-email {
    display: inline-flex;
    align-items: baseline;
    gap: 1.5rem;
    margin-top: 3rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--ink);
    transition: border-color 0.5s ease, padding-right 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-email-label {
    font-family: var(--sans);
    font-size: 0.7rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.footer-email-value {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(1.25rem, 2.5vw, 2rem);
    letter-spacing: -0.01em;
    color: var(--ink);
    transition: color 0.5s ease;
}

.footer-email:hover {
    border-color: var(--accent);
    padding-right: 1.5rem;
}

.footer-email:hover .footer-email-value {
    color: var(--accent);
    font-style: italic;
}

.footer-email:hover .footer-email-label {
    color: var(--accent);
}

/* Masthead — four cells */
.footer-masthead {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--ink-hairline);
    border-bottom: 1px solid var(--ink-hairline);
}

.mast-cell {
    padding: 2.5rem 1.5rem 2.5rem 0;
    border-right: 1px solid var(--ink-hairline);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-left: 1.5rem;
}

.mast-cell:first-child {
    padding-left: 0;
}

.mast-cell:last-child {
    border-right: none;
    padding-right: 0;
}

.mast-label {
    font-family: var(--sans);
    font-size: 0.6rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.mast-value {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 1.25rem;
    line-height: 1.35;
    color: var(--ink);
    letter-spacing: -0.005em;
    flex: 1;
}

.mast-coord {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--ink-soft);
    line-height: 1.5;
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--ink-hairline);
}

/* Signature mark — the closing gesture */
.footer-signature {
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    margin: 2rem 0 0;
}

.footer-signature svg {
    width: 100%;
    max-width: 1200px;
    height: auto;
}

.sig-text {
    font-family: var(--serif);
    font-weight: 200;
    font-size: 200px;
    font-style: italic;
    letter-spacing: -0.03em;
    fill: var(--ink);
    fill-opacity: 0;
    stroke: var(--ink);
    stroke-width: 0.6;
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 3s cubic-bezier(0.16, 1, 0.3, 1),
                fill-opacity 1.5s ease 2s;
}

.footer-signature.drawn .sig-text {
    stroke-dashoffset: 0;
    fill-opacity: 1;
}

/* Colophon — final line */
.footer-colophon {
    padding-top: 2rem;
    border-top: 1px solid var(--ink-hairline);
}

.colophon-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.colophon-item {
    font-family: var(--sans);
    font-size: 0.6rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

.colophon-item:nth-child(2) {
    font-family: var(--serif);
    font-style: italic;
    text-transform: none;
    letter-spacing: 0.02em;
    font-size: 0.8rem;
    color: var(--ink-soft);
}

/* ============ MOBILE ============ */

@media (max-width: 768px) {
    .frame-corner {
        padding: 1rem 1.25rem;
        font-size: 0.55rem;
        letter-spacing: 0.2em;
    }
    
    .opus {
        padding: 5rem 1.25rem 3rem;
    }
    
    .opus-title {
        font-size: clamp(4rem, 22vw, 8rem);
    }
    
    .chapter {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 6rem 1.25rem;
    }
    
    .chapter-alt .chapter-side {
        order: 0;
        text-align: left;
    }
    
    .chapter-alt .chapter-body {
        order: 0;
    }
    
    .chapter-side {
        position: static;
        flex-direction: row;
        gap: 1rem;
        align-items: baseline;
    }
    
    .chapter-label {
        font-size: 1.25rem;
    }
    
    .register-item {
        grid-template-columns: 2rem 1fr;
        gap: 1rem;
        padding: 1.5rem 0;
    }
    
    .register-item:hover {
        padding-left: 0;
        padding-right: 0;
    }
    
    .register-desc {
        grid-column: 2;
    }
    
    .statement {
        padding: 8rem 1.25rem;
    }
    
    .footer {
        padding: 5rem 1.25rem 2rem;
        gap: 4rem;
    }
    
    .footer-invite {
        padding: 2rem 0;
    }
    
    .footer-invite-accent {
        padding-left: 0;
    }
    
    .footer-email {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .footer-masthead {
        grid-template-columns: 1fr 1fr;
    }
    
    .mast-cell {
        padding: 1.5rem 1rem 1.5rem 1rem;
    }
    
    .mast-cell:first-child,
    .mast-cell:nth-child(3) {
        padding-left: 0;
    }
    
    .mast-cell:nth-child(2n) {
        border-right: none;
        padding-right: 0;
    }
    
    .mast-cell:nth-child(1),
    .mast-cell:nth-child(2) {
        border-bottom: 1px solid var(--ink-hairline);
    }
    
    .sig-text {
        font-size: 140px;
    }
    
    .colophon-row {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .index {
        padding: 5rem 2rem 2rem;
    }
    
    .loader {
        padding: 1.25rem;
    }
}