/* dilemma.dev — strict monochrome, portfolio-grid, sharp-angles */

:root {
    --void: #0D0D0D;
    --ash: #1A1A1A;
    --smoke: #3A3A3A;
    --slate: #5A5A5A;
    --fog: #B0B0B0;
    --bone: #FAFAFA;

    --font-sans: 'Outfit', 'Inter', system-ui, sans-serif;
    --font-mono: 'Space Mono', 'Space', ui-monospace, monospace;

    --gutter: 2px;
    --chamfer: 12px;
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-hover: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html, body {
    background: var(--void);
    color: var(--fog);
    font-family: var(--font-sans);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body {
    min-height: 100vh;
}

/* ----------- Aperture Header ----------- */

.aperture-header {
    position: relative;
    width: 100%;
    height: 100vh;
    background: var(--void);
    overflow: hidden;
}

.aperture-content {
    position: absolute;
    left: 33%;
    top: 28%;
    max-width: 480px;
    transform: translateY(-10%);
}

.wordmark {
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 1.0;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--bone);
    opacity: 0;
    animation: fadeIn 800ms ease-out forwards;
    animation-delay: 100ms;
}

.tagline {
    margin-top: 1.4rem;
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--slate);
    max-width: 28em;
    opacity: 0;
    animation: fadeIn 800ms ease-out forwards;
    animation-delay: 500ms;
}

.header-rule {
    position: absolute;
    left: 0;
    top: 67vh;
    width: 100%;
    height: 24px;
    pointer-events: none;
}

.rule-line {
    position: absolute;
    left: 0;
    top: 0;
    height: 1px;
    width: 0%;
    background: var(--smoke);
    animation: drawRule 600ms ease-out forwards;
    animation-delay: 400ms;
}

.rule-terminus {
    position: absolute;
    right: 0;
    top: 0;
    width: 24px;
    height: 24px;
    opacity: 0;
    animation: fadeIn 600ms ease-out forwards;
    animation-delay: 1000ms;
}

.rule-terminus::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 1px;
    background: var(--smoke);
    transform-origin: 0 0;
    transform: rotate(45deg);
}

.aperture-meta {
    position: absolute;
    left: 0;
    bottom: 32px;
    width: 100%;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 0.75rem;
    line-height: 1.4;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--slate);
    opacity: 0;
    animation: fadeIn 800ms ease-out forwards;
    animation-delay: 1200ms;
}

.meta-label {
    display: inline-block;
}

/* ----------- Grid Field ----------- */

.grid-field {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gutter);
    background: var(--smoke);
    padding: 0;
    transition: gap 400ms var(--ease-hover);
}

.grid-field.has-expanded .grid-cell:not(.is-expanded):not(:hover) {
    opacity: 0.55;
}

.grid-cell {
    position: relative;
    aspect-ratio: 1 / 1;
    background: var(--void);
    overflow: hidden;
    cursor: pointer;
    clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, 0 100%);
    opacity: 0;
    transform: scale(0.92);
    transition:
        opacity 250ms var(--ease-hover),
        transform 180ms var(--ease-hover),
        grid-column 420ms var(--ease-spring),
        grid-row 420ms var(--ease-spring);
}

.grid-cell.is-visible {
    opacity: 1;
    transform: scale(1);
}

.grid-field:hover .grid-cell.is-visible:not(:hover) {
    opacity: 0.4;
}

.grid-cell.is-visible:hover {
    transform: scale(1.03);
    z-index: 4;
}

.grid-cell.is-expanded {
    grid-column: span 2;
    grid-row: span 2;
    transform: scale(1);
    z-index: 6;
    cursor: default;
}

.grid-cell.is-expanded:hover {
    transform: scale(1);
}

.cell-thumb {
    position: absolute;
    inset: 0;
    transition: opacity 220ms var(--ease-hover);
}

.thumb-svg {
    display: block;
    width: 100%;
    height: 100%;
}

.cell-chevron {
    position: absolute;
    right: 12px;
    bottom: 12px;
    width: 14px;
    height: 14px;
    opacity: 0;
    transition: opacity 150ms ease-out;
}

.cell-chevron::before,
.cell-chevron::after {
    content: "";
    position: absolute;
    background: var(--bone);
}

.cell-chevron::before {
    right: 0;
    top: 50%;
    width: 14px;
    height: 1px;
    transform-origin: 100% 50%;
    transform: rotate(-45deg);
}

.cell-chevron::after {
    right: 0;
    top: 50%;
    width: 14px;
    height: 1px;
    transform-origin: 100% 50%;
    transform: rotate(45deg);
}

.grid-cell[data-invert="true"] .cell-chevron::before,
.grid-cell[data-invert="true"] .cell-chevron::after {
    background: var(--void);
}

.grid-cell:hover .cell-chevron {
    opacity: 1;
}

.cell-meta {
    position: absolute;
    left: 14px;
    bottom: 12px;
    display: flex;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bone);
    mix-blend-mode: difference;
    pointer-events: none;
    transition: opacity 220ms var(--ease-hover);
}

.cell-index {
    color: var(--bone);
}

.cell-category {
    color: var(--bone);
    opacity: 0.8;
}

.cell-expanded {
    position: absolute;
    inset: 0;
    background: var(--ash);
    padding: clamp(20px, 3vw, 36px);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 14px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms ease-out;
    clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, 0 100%);
}

.grid-cell.is-expanded .cell-thumb {
    opacity: 0.18;
}

.grid-cell.is-expanded .cell-meta {
    opacity: 0;
}

.grid-cell.is-expanded .cell-expanded {
    opacity: 1;
    pointer-events: auto;
}

.cell-title {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: clamp(1rem, 2vw, 1.5rem);
    line-height: 1.2;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--bone);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 320ms ease-out, transform 320ms ease-out;
}

.cell-description {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: clamp(0.85rem, 1.05vw, 0.95rem);
    line-height: 1.65;
    letter-spacing: 0.01em;
    color: var(--fog);
    max-width: 38em;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 320ms ease-out 150ms, transform 320ms ease-out 150ms;
}

.cell-link {
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bone);
    text-decoration: none;
    border-bottom: 1px solid var(--smoke);
    padding-bottom: 4px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 320ms ease-out 300ms, transform 320ms ease-out 300ms, border-color 200ms ease-out, color 200ms ease-out;
}

.cell-link:hover {
    border-color: var(--bone);
    color: var(--bone);
}

.grid-cell.is-expanded .cell-title,
.grid-cell.is-expanded .cell-description,
.grid-cell.is-expanded .cell-link {
    opacity: 1;
    transform: translateY(0);
}

/* ----------- Footer ----------- */

.footer-terminus {
    position: relative;
    background: var(--void);
    padding: clamp(80px, 12vh, 160px) clamp(24px, 6vw, 96px);
    overflow: hidden;
    border-top: 1px solid var(--smoke);
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.footer-diagonal {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.9;
}

.footer-content {
    position: relative;
    width: 320px;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    gap: 18px;
    z-index: 1;
}

.footer-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--slate);
}

.footer-line {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--fog);
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--smoke);
    padding-top: 16px;
}

.footer-list li {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 0.85rem;
}

.footer-key {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--slate);
}

.footer-value {
    font-family: var(--font-sans);
    color: var(--bone);
    font-weight: 400;
    text-align: right;
}

.footer-stamp {
    margin-top: 10px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate);
}

/* ----------- Animations ----------- */

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes drawRule {
    from { width: 0%; }
    to { width: calc(100% - 24px); }
}

/* ----------- Responsive ----------- */

@media (max-width: 1199px) {
    .grid-field {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-cell {
        aspect-ratio: 4 / 3;
    }
    .grid-cell.is-expanded {
        grid-column: span 2;
        grid-row: span 1;
    }
    .aperture-content {
        left: 8%;
        top: 30%;
    }
}

@media (max-width: 480px) {
    .grid-field {
        grid-template-columns: 1fr;
    }
    .grid-cell {
        aspect-ratio: 4 / 3;
    }
    .grid-cell.is-expanded {
        grid-column: span 1;
        grid-row: span 1;
    }
    .aperture-content {
        left: 8%;
        top: 28%;
    }
    .aperture-meta {
        padding: 0 20px;
        font-size: 0.7rem;
    }
    .cell-meta {
        font-size: 0.65rem;
    }
}