:root {
    --paper: #f5f5f1;
    --paper-deep: #ecece5;
    --ink: #23211f;
    --muted: #68645f;
    --line: rgba(35, 33, 31, 0.12);
    --line-strong: rgba(35, 33, 31, 0.22);
    --brown: #765440;
    --sage: #596d57;
    --soft-sage: #e6ece2;
    --white: #ffffff;
    --radius: 8px;
    --motion: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Aptos", "Avenir Next", "Segoe UI Variable", "Segoe UI", sans-serif;
    letter-spacing: 0;
    color: var(--ink);
    background:
        linear-gradient(90deg, rgba(35, 33, 31, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(35, 33, 31, 0.026) 1px, transparent 1px),
        var(--paper);
    background-size: 48px 48px;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: radial-gradient(circle at center, rgba(35, 33, 31, 0.08) 0.7px, transparent 0.7px);
    background-size: 14px 14px;
    opacity: 0.18;
}

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

a {
    color: inherit;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--sage);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    left: 1rem;
    top: 1rem;
    z-index: 5;
    transform: translateY(-160%);
    padding: 0.7rem 0.9rem;
    border-radius: 6px;
    background: var(--ink);
    color: var(--white);
    text-decoration: none;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-shell {
    width: min(1160px, calc(100% - 40px));
    margin-inline: auto;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-block: 1.25rem;
}

.brand-link,
.topbar-links a,
.inline-links a,
.footer a {
    text-decoration: none;
}

.brand-link {
    font-weight: 800;
}

.topbar-links {
    display: flex;
    gap: 0.35rem;
    align-items: center;
}

.topbar-links a,
.inline-links a {
    min-height: 2.4rem;
    display: inline-flex;
    align-items: center;
    padding: 0 0.75rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.42);
    color: var(--muted);
    font-size: 0.9rem;
    transition: transform 220ms var(--motion), border-color 220ms var(--motion), color 220ms var(--motion), background 220ms var(--motion);
}

.topbar-links a:hover,
.inline-links a:hover {
    transform: translateY(-1px);
    color: var(--ink);
    border-color: var(--line-strong);
    background: var(--white);
}

.hero-section {
    min-height: calc(100dvh - 86px);
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.78fr);
    gap: clamp(2rem, 6vw, 6rem);
    align-items: center;
    padding-block: clamp(2rem, 6vw, 5.5rem);
}

.hero-copy {
    max-width: 700px;
}

.eyebrow {
    margin: 0 0 1rem;
    color: var(--sage);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 1.25rem;
    max-width: 10ch;
    font-size: clamp(3.4rem, 7vw, 7.2rem);
    line-height: 0.96;
    letter-spacing: 0;
}

h2 {
    margin-bottom: 1rem;
    font-size: clamp(2.15rem, 4vw, 4.6rem);
    line-height: 1;
    letter-spacing: 0;
}

.hero-lead,
.section-copy p,
.install-copy p,
.atlas-copy p {
    color: var(--muted);
    font-size: clamp(1rem, 1.45vw, 1.18rem);
    line-height: 1.7;
}

.hero-lead {
    max-width: 42rem;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.4rem;
}

.button {
    min-height: 3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0 1rem;
    border: 1px solid transparent;
    border-radius: 6px;
    font-weight: 800;
    white-space: nowrap;
    text-decoration: none;
    transition: transform 240ms var(--motion), background 240ms var(--motion), border-color 240ms var(--motion);
}

.button:active {
    transform: scale(0.98);
}

.button-primary {
    background: var(--ink);
    color: var(--white);
}

.button-primary:hover {
    background: #34312d;
}

.button-secondary {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.5);
}

.button-secondary:hover {
    border-color: var(--line-strong);
    background: var(--white);
}

.button-mark {
    display: inline-grid;
    place-items: center;
    width: 1.7rem;
    height: 1.7rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.12);
    transition: transform 240ms var(--motion);
}

.button-primary:hover .button-mark {
    transform: translate(2px, -1px);
}

.hero-facts,
.spec-list {
    display: grid;
    gap: 0;
    margin: 0;
    border-top: 1px solid var(--line);
}

.hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.hero-facts div,
.spec-list div {
    padding: 1rem 1rem 1rem 0;
    border-bottom: 1px solid var(--line);
}

dt {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 700;
}

dd {
    margin: 0.25rem 0 0;
    font-weight: 800;
}

.hero-visual {
    display: grid;
    gap: 1rem;
    justify-items: center;
}

.pet-frame {
    width: min(100%, 440px);
    min-height: 500px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.38)),
        var(--soft-sage);
    box-shadow: 0 28px 80px rgba(35, 33, 31, 0.08);
    overflow: hidden;
}

.pet-canvas {
    width: min(320px, 72vw);
    aspect-ratio: 192 / 208;
    display: grid;
    place-items: center;
}

.malou-sprite {
    --row: 0;
    --steps: 6;
    --distance: -1152px;
    --duration: 880ms;
    width: 192px;
    height: 208px;
    background-image: url("/malou-codex-pet/assets/spritesheet.webp");
    background-repeat: no-repeat;
    background-size: 1536px 1872px;
    background-position-y: calc(var(--row) * -208px);
    animation: malou-sprite var(--duration) steps(var(--steps)) infinite;
    transform: scale(1.58);
    transform-origin: center;
}

@keyframes malou-sprite {
    from {
        background-position-x: 0;
    }
    to {
        background-position-x: var(--distance);
    }
}

.state-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.45rem;
}

.state-button {
    min-height: 2.35rem;
    padding: 0 0.75rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.5);
    color: var(--muted);
    font: inherit;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 220ms var(--motion), background 220ms var(--motion), color 220ms var(--motion), border-color 220ms var(--motion);
}

.state-button:hover,
.state-button.is-active {
    color: var(--ink);
    border-color: var(--line-strong);
    background: var(--white);
}

.state-button:active {
    transform: scale(0.98);
}

.motion-note {
    display: none;
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.section-grid,
.install-section,
.atlas-section {
    padding-block: clamp(4rem, 9vw, 8rem);
    border-top: 1px solid var(--line);
}

.section-grid {
    display: grid;
    grid-template-columns: minmax(240px, 0.38fr) minmax(0, 1fr);
    gap: clamp(2rem, 6vw, 5rem);
}

.section-copy {
    position: sticky;
    top: 2rem;
    align-self: start;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
}

.preview-tile {
    margin: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.5);
    overflow: hidden;
}

.preview-tile video {
    width: 100%;
    aspect-ratio: 1;
    object-fit: contain;
    padding: 1rem;
    background: var(--paper-deep);
}

.preview-tile figcaption {
    padding: 0.85rem 0.95rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-weight: 800;
}

.install-section,
.atlas-section {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
    gap: clamp(2rem, 6vw, 5rem);
    align-items: center;
}

.inline-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.6rem;
}

.command-panel {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #1f1d1a;
    color: #f7f5ef;
    box-shadow: 0 28px 80px rgba(35, 33, 31, 0.12);
    overflow: hidden;
}

.command-bar {
    display: flex;
    gap: 0.42rem;
    padding: 0.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.command-bar span {
    width: 0.62rem;
    height: 0.62rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.24);
}

pre {
    margin: 0;
    padding: clamp(1rem, 3vw, 1.6rem);
    overflow-x: auto;
}

code {
    font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
    font-size: 0.92rem;
    line-height: 1.7;
}

.spec-list {
    margin-top: 1.8rem;
}

.spec-list code {
    overflow-wrap: anywhere;
    color: var(--brown);
    font-weight: 700;
}

.contact-sheet-link {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.46);
    transition: transform 240ms var(--motion), border-color 240ms var(--motion);
}

.contact-sheet-link:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
}

.footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-block: 2rem 3rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.92rem;
}

.footer a:hover {
    color: var(--ink);
}

.reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 700ms var(--motion), transform 700ms var(--motion);
}

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

@media (max-width: 920px) {
    .hero-section,
    .section-grid,
    .install-section,
    .atlas-section {
        grid-template-columns: 1fr;
    }

    .hero-section {
        min-height: auto;
    }

    .section-copy {
        position: static;
    }

    .preview-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .site-shell {
        width: min(100% - 28px, 1160px);
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
        padding-block: 0.9rem;
    }

    .topbar-links {
        width: 100%;
    }

    .topbar-links a,
    .button,
    .inline-links a {
        flex: 1;
    }

    h1 {
        margin-bottom: 0.9rem;
        font-size: 2.85rem;
    }

    .hero-section {
        gap: 1.15rem;
        padding-block: 1rem 3rem;
    }

    .hero-lead {
        margin-bottom: 1.15rem;
        line-height: 1.55;
    }

    .hero-actions {
        margin-bottom: 1rem;
    }

    .hero-facts {
        display: none;
    }

    .pet-frame {
        min-height: 300px;
    }

    .malou-sprite {
        transform: scale(1.08);
    }

    .state-controls {
        gap: 0.35rem;
    }

    .state-button {
        min-height: 2.15rem;
        padding: 0 0.58rem;
        font-size: 0.84rem;
    }

    .preview-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    .malou-sprite {
        animation: none !important;
    }

    .motion-note {
        display: block;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}