/* ============================================================
   recycle.studio v2  |  Swiss / High-contrast / Layered-depth
   Palette: #000 / #FFF / #E63946 / #E0E0E0 / #808080 / #F5F5F5
   Faces:   Barlow Condensed / Inter / IBM Plex Mono
   ============================================================ */

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

:root {
    --black: #000000;
    --white: #FFFFFF;
    --red: #E63946;
    --grid-gray: #E0E0E0;
    --mid-gray: #808080;
    --off-white: #F5F5F5;
    --max: 1200px;
    --gutter: 16px;
    --hover-scale: 1.02;
    --t: 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    font-size: clamp(15px, 1.4vw, 17px);
    line-height: 1.7;
    color: var(--black);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ----------------------------------------------------------
   Section 01  |  Grid Manifesto Hero
   ---------------------------------------------------------- */
#grid-manifesto {
    position: relative;
    min-height: 100vh;
    background: var(--white);
    color: var(--black);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 32px clamp(20px, 4vw, 48px);
}

.grid-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(to right, var(--grid-gray) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-gray) 1px, transparent 1px);
    background-size: calc(100% / 12) 100%, 100% 80px;
    z-index: 1;
    opacity: 0.7;
}

.floating-icons {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    perspective: 1200px;
}

.icon-3d {
    position: absolute;
    transform-style: preserve-3d;
    will-change: transform;
}

.icon-cube {
    width: 140px;
    height: 140px;
    top: 18%;
    right: 8%;
    animation: cube-spin 18s linear infinite;
}

.icon-arrows {
    width: 180px;
    height: 180px;
    bottom: 12%;
    left: 6%;
    animation: arrows-orbit 22s linear infinite;
}

.icon-planes {
    width: 160px;
    height: 160px;
    top: 40%;
    left: 22%;
    animation: planes-shift 16s linear infinite;
}

.icon-octa {
    width: 110px;
    height: 110px;
    bottom: 22%;
    right: 18%;
    animation: octa-tumble 20s linear infinite;
}

/* Cube */
.cube-face {
    position: absolute;
    width: 140px;
    height: 140px;
    border: 1.5px solid var(--black);
    background: rgba(255, 255, 255, 0.75);
}
.cube-face--front  { transform: translateZ(70px); }
.cube-face--back   { transform: translateZ(-70px) rotateY(180deg); }
.cube-face--right  { transform: rotateY(90deg) translateZ(70px); }
.cube-face--left   { transform: rotateY(-90deg) translateZ(70px); }
.cube-face--top    { transform: rotateX(90deg) translateZ(70px); }
.cube-face--bottom { transform: rotateX(-90deg) translateZ(70px); }

/* Arrows */
.arrow-segment {
    position: absolute;
    width: 60px;
    height: 14px;
    background: var(--black);
    top: 50%;
    left: 50%;
    transform-origin: 0 50%;
}
.arrow-segment::after {
    content: "";
    position: absolute;
    right: -14px;
    top: -7px;
    width: 0;
    height: 0;
    border-top: 14px solid transparent;
    border-bottom: 14px solid transparent;
    border-left: 14px solid var(--black);
}
.arrow-segment--1 { transform: translate(0, -7px) rotate(0deg); }
.arrow-segment--2 { transform: translate(0, -7px) rotate(120deg); }
.arrow-segment--3 { transform: translate(0, -7px) rotate(240deg); }

/* Planes */
.plane-layer {
    position: absolute;
    inset: 0;
    border: 1.5px solid var(--black);
    background: rgba(255, 255, 255, 0.6);
}
.plane-layer--1 { transform: rotateZ(0deg) translateZ(-30px); }
.plane-layer--2 { transform: rotateZ(45deg) translateZ(0px); }
.plane-layer--3 { transform: rotateZ(90deg) translateZ(30px); border-color: var(--red); }

/* Octahedron */
.octa-face {
    position: absolute;
    width: 0;
    height: 0;
    left: 50%;
    top: 50%;
    border-left: 55px solid transparent;
    border-right: 55px solid transparent;
    border-bottom: 95px solid var(--black);
    transform-origin: 50% 100%;
    margin-left: -55px;
    margin-top: -95px;
    opacity: 0.85;
}
.octa-face--a { transform: rotateY(0deg); }
.octa-face--b { transform: rotateY(90deg); }
.octa-face--c { transform: rotateY(180deg); border-bottom-color: var(--white); }
.octa-face--d { transform: rotateY(270deg); border-bottom-color: var(--black); }

@keyframes cube-spin {
    from { transform: rotateX(15deg) rotateY(0deg); }
    to   { transform: rotateX(15deg) rotateY(360deg); }
}
@keyframes arrows-orbit {
    from { transform: rotateZ(0deg); }
    to   { transform: rotateZ(360deg); }
}
@keyframes planes-shift {
    0%   { transform: rotateX(0deg) rotateY(0deg); }
    50%  { transform: rotateX(180deg) rotateY(180deg); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}
@keyframes octa-tumble {
    from { transform: rotateX(20deg) rotateY(0deg); }
    to   { transform: rotateX(20deg) rotateY(360deg); }
}

/* Header strip */
.manifesto-header {
    position: relative;
    z-index: 5;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--black);
}

.header-row {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-items: baseline;
}

.header-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--black);
}

.header-row .header-label:nth-child(1) { grid-column: 1 / span 4; }
.header-row .header-label:nth-child(2) { grid-column: 5 / span 4; text-align: center; }
.header-row .header-label:nth-child(3) { grid-column: 9 / span 4; text-align: right; }

/* Manifesto grid + wordmark */
.manifesto-grid {
    flex: 1;
    position: relative;
    z-index: 5;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-content: center;
    padding: 48px 0;
    max-width: var(--max);
    width: 100%;
    margin: 0 auto;
}

.manifesto-meta {
    grid-column: 1 / span 2;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    color: var(--mid-gray);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-left: 2px solid var(--black);
    padding-left: 12px;
}

.wordmark {
    grid-column: 3 / span 10;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: clamp(64px, 14vw, 220px);
    line-height: 0.88;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--black);
    transition: transform var(--t);
    cursor: default;
    display: flex;
    flex-direction: column;
}

.wordmark:hover {
    transform: scale(var(--hover-scale));
}

.wordmark__line {
    display: block;
}

.wordmark__line--accent {
    color: var(--white);
    -webkit-text-stroke: 2px var(--black);
    text-stroke: 2px var(--black);
    margin-left: clamp(40px, 8vw, 140px);
}

.manifesto-statement {
    grid-column: 8 / span 5;
    margin-top: 32px;
    padding-left: 24px;
    border-left: 1px solid var(--black);
}

.statement-text {
    font-size: clamp(15px, 1.4vw, 17px);
    line-height: 1.7;
    margin-bottom: 12px;
}

.statement-cite {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    color: var(--mid-gray);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.manifesto-footer {
    position: relative;
    z-index: 5;
    padding-top: 16px;
    border-top: 1px solid var(--black);
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-items: center;
}

.footer-cell {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.manifesto-footer .footer-cell:nth-child(1) { grid-column: 1 / span 3; }
.manifesto-footer .footer-cell:nth-child(2) { grid-column: 5 / span 4; text-align: center; }
.manifesto-footer .footer-cell:nth-child(3) { grid-column: 10 / span 3; text-align: right; }

/* ----------------------------------------------------------
   Section Headers (shared)
   ---------------------------------------------------------- */
.section-header {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-items: baseline;
    padding: 80px clamp(20px, 4vw, 48px) 32px;
    border-bottom: 1px solid currentColor;
    max-width: 100%;
}

.section-header--light { color: var(--black); background: var(--off-white); }
.section-header--dark { color: var(--white); background: var(--black); }
.section-header--ref { color: var(--black); background: var(--white); border-top: 4px solid var(--black); }

.section-number {
    grid-column: 1 / span 1;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.06em;
}

.section-title {
    grid-column: 2 / span 7;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-size: clamp(40px, 6vw, 96px);
    line-height: 1;
}

.section-cite {
    grid-column: 9 / span 4;
    text-align: right;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ----------------------------------------------------------
   Section 02  |  Project Grid (alternating dark/light cards)
   ---------------------------------------------------------- */
#projects {
    background: var(--off-white);
    padding-bottom: 80px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    max-width: var(--max);
    margin: 48px auto 0;
    padding: 0 clamp(20px, 4vw, 48px);
}

.project-card {
    position: relative;
    padding: 32px;
    border: 1px solid var(--black);
    transition: transform var(--t);
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 360px;
    cursor: pointer;
}

.project-card:hover {
    transform: scale(var(--hover-scale));
    z-index: 4;
}

.project-card--dark {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.project-card--light {
    background: var(--white);
    color: var(--black);
}

.project-card--span-4  { grid-column: span 4; }
.project-card--span-6  { grid-column: span 6; }
.project-card--span-12 { grid-column: span 12; min-height: 280px; }

.card-icon {
    width: 64px;
    height: 64px;
    perspective: 600px;
    position: relative;
}

.card-icon--large {
    width: 96px;
    height: 96px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-top: 1px solid currentColor;
    padding-top: 12px;
}

.card-tag {
    color: var(--red);
}

.project-card--dark .card-tag { color: var(--red); }

.card-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: clamp(22px, 2.4vw, 34px);
    line-height: 1.05;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    flex: 0 0 auto;
}

.card-title--xl {
    font-size: clamp(30px, 4vw, 56px);
}

.card-desc {
    font-size: 14px;
    line-height: 1.6;
    flex: 1 1 auto;
}

.card-desc--wide {
    max-width: 70ch;
    font-size: 16px;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-top: 1px solid currentColor;
    padding-top: 12px;
    color: var(--mid-gray);
}

.project-card--dark .card-footer { color: var(--grid-gray); }

/* Mini 3D icons inside cards */
.mini-cube {
    width: 48px;
    height: 48px;
    position: relative;
    transform-style: preserve-3d;
    animation: mini-cube-spin 12s linear infinite;
    margin: 8px;
}
.mini-cube__face {
    position: absolute;
    width: 48px;
    height: 48px;
    border: 1.5px solid currentColor;
}
.mini-cube__face--f { transform: translateZ(24px); }
.mini-cube__face--t { transform: rotateX(90deg) translateZ(24px); }
.mini-cube__face--r { transform: rotateY(90deg) translateZ(24px); }
.mini-cube--alt { animation-direction: reverse; }

@keyframes mini-cube-spin {
    from { transform: rotateX(15deg) rotateY(0deg); }
    to   { transform: rotateX(15deg) rotateY(360deg); }
}

.mini-arrows {
    width: 64px;
    height: 64px;
    position: relative;
    animation: mini-arrows-spin 14s linear infinite;
}
.mini-arrows--large { width: 96px; height: 96px; }
.mini-arrow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 26px;
    height: 6px;
    background: currentColor;
    transform-origin: 0 50%;
}
.mini-arrows--large .mini-arrow { width: 38px; height: 8px; }
.mini-arrow::after {
    content: "";
    position: absolute;
    right: -8px;
    top: -5px;
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 8px solid currentColor;
}
.mini-arrow--1 { transform: translate(0, -3px) rotate(0deg); }
.mini-arrow--2 { transform: translate(0, -3px) rotate(120deg); }
.mini-arrow--3 { transform: translate(0, -3px) rotate(240deg); }

@keyframes mini-arrows-spin {
    from { transform: rotateZ(0deg); }
    to   { transform: rotateZ(360deg); }
}

.mini-planes {
    width: 56px;
    height: 56px;
    position: relative;
    animation: mini-planes-tilt 11s linear infinite;
}
.mini-plane {
    position: absolute;
    inset: 0;
    border: 1.5px solid currentColor;
    background: transparent;
}
.mini-plane--1 { transform: rotate(0deg); }
.mini-plane--2 { transform: rotate(45deg); border-color: var(--red); }

@keyframes mini-planes-tilt {
    0%   { transform: rotate(0deg) skew(0deg); }
    50%  { transform: rotate(180deg) skew(8deg); }
    100% { transform: rotate(360deg) skew(0deg); }
}

.mini-octa {
    width: 56px;
    height: 56px;
    position: relative;
    animation: mini-octa-spin 13s linear infinite;
    transform-style: preserve-3d;
    perspective: 200px;
}
.mini-octa__face {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 0;
    height: 0;
    border-left: 24px solid transparent;
    border-right: 24px solid transparent;
    border-bottom: 44px solid currentColor;
    margin-left: -24px;
    margin-top: -44px;
    transform-origin: 50% 100%;
    opacity: 0.85;
}
.mini-octa__face--1 { transform: rotateY(0deg); }
.mini-octa__face--2 { transform: rotateY(90deg); }
.mini-octa__face--3 { transform: rotateY(180deg); }

@keyframes mini-octa-spin {
    from { transform: rotateY(0deg); }
    to   { transform: rotateY(360deg); }
}

/* ----------------------------------------------------------
   Section 03  |  Reference (academic / book-scholarly)
   ---------------------------------------------------------- */
#reference {
    background: var(--white);
    color: var(--black);
    padding-bottom: 96px;
}

.reference-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter) 32px;
    max-width: var(--max);
    margin: 48px auto 0;
    padding: 0 clamp(20px, 4vw, 48px);
}

.ref-block {
    grid-column: span 6;
    border-top: 1px solid var(--black);
    padding-top: 16px;
}

.ref-block:nth-child(odd) {
    padding-right: 16px;
}

.ref-heading {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: clamp(20px, 2vw, 28px);
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: 12px;
}

.ref-body {
    font-size: 15px;
    line-height: 1.75;
    color: var(--black);
}

.ref-body em {
    font-style: italic;
    color: var(--black);
}

.ref-link {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    color: var(--red);
    text-decoration: none;
    border-bottom: 1px solid var(--red);
    transition: transform var(--t);
    display: inline-block;
}

.ref-link:hover {
    transform: scale(var(--hover-scale));
}

.swatch {
    display: inline-block;
    width: 12px;
    height: 12px;
    margin: 0 2px;
    vertical-align: middle;
    border: 1px solid var(--black);
}
.swatch--black { background: var(--black); }
.swatch--white { background: var(--white); }
.swatch--red   { background: var(--red); border-color: var(--red); }
.swatch--grid  { background: var(--grid-gray); }
.swatch--mid   { background: var(--mid-gray); border-color: var(--mid-gray); }

.bibliography {
    max-width: var(--max);
    margin: 64px auto 0;
    padding: 32px clamp(20px, 4vw, 48px) 0;
    border-top: 4px solid var(--black);
}

.biblio-heading {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: clamp(24px, 2.6vw, 36px);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: 24px;
}

.biblio-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.biblio-item {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 16px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    line-height: 1.7;
}

.biblio-num {
    color: var(--red);
}

.biblio-text em {
    font-style: italic;
}

/* ----------------------------------------------------------
   Section 04  |  Index Table
   ---------------------------------------------------------- */
#index-strip {
    background: var(--black);
    color: var(--white);
    padding-bottom: 96px;
}

.index-table {
    width: 100%;
    max-width: var(--max);
    margin: 48px auto 0;
    border-collapse: collapse;
    padding: 0 clamp(20px, 4vw, 48px);
    font-family: 'Inter', sans-serif;
}

.index-table thead th {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-align: left;
    padding: 16px clamp(20px, 4vw, 48px) 16px 0;
    border-bottom: 2px solid var(--white);
    color: var(--grid-gray);
}

.index-table thead th:first-child {
    padding-left: clamp(20px, 4vw, 48px);
}

.index-table tbody td {
    padding: 18px clamp(20px, 4vw, 48px) 18px 0;
    border-bottom: 1px solid var(--mid-gray);
    font-size: 14px;
    line-height: 1.5;
}

.index-table tbody td:first-child {
    padding-left: clamp(20px, 4vw, 48px);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    color: var(--red);
    width: 60px;
}

.idx-row {
    transition: transform var(--t);
    transform-origin: left center;
}

.idx-row:hover {
    transform: scale(var(--hover-scale));
    background: rgba(230, 57, 70, 0.05);
}

/* ----------------------------------------------------------
   Colophon Footer
   ---------------------------------------------------------- */
#colophon {
    background: var(--white);
    color: var(--black);
    padding: 64px clamp(20px, 4vw, 48px);
    border-top: 4px solid var(--black);
}

.colophon-grid {
    max-width: var(--max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--gutter);
}

.colophon-cell {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px solid var(--black);
    padding-top: 12px;
}

.colophon-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--mid-gray);
}

.colophon-value {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: clamp(14px, 1.4vw, 18px);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.colophon-rule {
    max-width: var(--max);
    margin: 48px auto 24px;
    height: 1px;
    background: var(--black);
}

.colophon-end {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--black);
}

.end-mark {
    color: var(--red);
    font-size: 14px;
    line-height: 1;
}

/* ----------------------------------------------------------
   Reveal animation
   ---------------------------------------------------------- */
.is-revealing {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ----------------------------------------------------------
   Responsive
   ---------------------------------------------------------- */
@media (max-width: 900px) {
    .header-row .header-label,
    .manifesto-footer .footer-cell {
        grid-column: 1 / -1 !important;
        text-align: left !important;
    }

    .manifesto-meta {
        grid-column: 1 / -1;
        flex-direction: row;
        flex-wrap: wrap;
        border-left: none;
        border-top: 1px solid var(--black);
        padding-left: 0;
        padding-top: 8px;
        gap: 16px;
    }

    .wordmark { grid-column: 1 / -1; }
    .wordmark__line--accent { margin-left: 24px; }
    .manifesto-statement { grid-column: 1 / -1; padding-left: 16px; }

    .project-card--span-4,
    .project-card--span-6 { grid-column: span 12; }
    .ref-block { grid-column: span 12; padding-right: 0 !important; }

    .colophon-grid { grid-template-columns: repeat(2, 1fr); }

    .icon-cube, .icon-arrows, .icon-planes, .icon-octa {
        opacity: 0.5;
        transform: scale(0.7);
    }

    .index-table thead th:nth-child(3),
    .index-table tbody td:nth-child(3),
    .index-table thead th:nth-child(4),
    .index-table tbody td:nth-child(4) {
        display: none;
    }
}