/* ————————————————————————————————
   Design tokens
   ———————————————————————————————— */

:root {
    --color-black: #4f4f4f;
    --color-gray: #6b6b6b;
    --color-blue: #2b5cd9;
    --color-placeholder: #2b5cd9;
    --color-white: #ffffff;

    --color-navy: #1e49aa;
    --color-green: #009d61;
    --color-bright-blue: #356dff;
    --color-dark: #000000;

    --font-serif: "Noto Serif JP", Georgia, "Times New Roman", serif;

    --space-s: 1rem;
    --space-m: 2rem;
    --space-l: 4rem;
    --space-xl: 6rem;

    --page-padding: 1.25rem;
    --border-radius: 16px;

    /* — Type roles (weight + letter-spacing fixed; size + line-height scale per breakpoint) — */
    --font-size-display: 1.75rem; /* 28px */
    --line-height-display: 2.75rem; /* 44px */
    --font-weight-display: 500;
    --letter-spacing-display: -1px;

    --font-size-heading: 1.5rem; /* 24px */
    --line-height-heading: 2rem; /* 32px */
    --font-weight-heading: 500;
    --letter-spacing-heading: -1px;

    --font-size-body-lg: 1.25rem; /* 20px */
    --line-height-body-lg: 2rem; /* 32px */
    --font-weight-body-lg: 400;
    --letter-spacing-body-lg: -1.2px;

    --font-size-body: 1rem; /* 16px */
    --line-height-body: 1.5rem; /* 24px */
    --font-weight-body: 500;
    --letter-spacing-body: 0px;

    --font-size-caption: 0.875rem; /* 14px */
    --line-height-caption: 1.625rem; /* 26px */
    --font-weight-caption: 400;
    --letter-spacing-caption: 0px;
}

/* ————————————————————————————————
   Reset
   ———————————————————————————————— */

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

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-serif);
    color: var(--color-black);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    max-width: 1400px;
    margin: 0 auto;
}

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

/* ————————————————————————————————
   Nav
   ———————————————————————————————— */

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-s) var(--page-padding);
}

.nav-logo {
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-display);
    color: var(--color-black);
}

.nav-link {
    font-size: var(--font-size-caption);
    color: var(--color-blue);
}

/* ————————————————————————————————
   Home — hero
   ———————————————————————————————— */

.hero {
    display: flex;
    align-items: center;
    padding: 0 var(--page-padding) 15vh;
    min-height: calc(100vh - 10rem);
}

.hero h1 br {
    display: none;
}

.hero h1 {
    font-size: var(--font-size-display);
    font-weight: var(--font-weight-display);
    line-height: var(--line-height-display);
    letter-spacing: var(--letter-spacing-display);
    font-variation-settings: "wght" 600;
}

/* ————————————————————————————————
   Home — project list
   ———————————————————————————————— */

.projects {
    padding: 0 var(--page-padding);
}

.project {
    display: block;
    margin-bottom: var(--space-xl);
}

.project-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: var(--color-placeholder);
    border-radius: var(--border-radius);
}

.project-title {
    font-size: var(--font-size-heading);
    font-weight: var(--font-weight-heading);
    line-height: var(--line-height-heading);
    letter-spacing: var(--letter-spacing-heading);
    color: var(--color-black);
    margin-top: var(--space-m);
}

.project-description {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-body);
    line-height: var(--line-height-body);
    letter-spacing: var(--letter-spacing-body);
    color: var(--color-black);
    margin-top: 0.75rem;
}

/* ————————————————————————————————
   Project page — header
   ———————————————————————————————— */

.project-header {
    padding: var(--space-xl) var(--page-padding) var(--space-l);
}

.project-header-title {
    font-size: var(--font-size-display);
    font-weight: var(--font-weight-display);
    line-height: var(--line-height-display);
    letter-spacing: var(--letter-spacing-display);
    font-variation-settings: "wght" 600;
    margin-bottom: var(--space-m);
}

.project-meta {
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-caption);
    line-height: var(--line-height-caption);
    letter-spacing: var(--letter-spacing-caption);
    color: var(--color-gray);
}

/* ————————————————————————————————
   Project page — image areas
   ———————————————————————————————— */

/* Shared base for all image areas */
.project-image-full,
.project-image-bleed,
.project-image-pair {
    margin: var(--space-s) var(--page-padding);
    width: calc(100% - var(--page-padding) * 2);
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* Pattern 1 — Padded: 16:9 container, content centered at ~80% */
.project-image-full {
    aspect-ratio: 16 / 9;
    background: var(--color-placeholder);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image-full video,
.project-image-full img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
    border-radius: 8px;
}

/* Pattern 2 — Bleed: content fills container, no internal padding */
.project-image-bleed {
    background: var(--color-placeholder);
    display: flex;
}

.project-image-bleed video,
.project-image-bleed img {
    width: 100%;
    display: block;
    object-fit: cover;
    border-radius: 8px;
}

/* Pattern 3 — Pair: two square areas side by side, stacked on mobile */
.project-image-pair {
    display: flex;
    flex-direction: column;
    gap: var(--page-padding);
}

.project-image-pair-item {
    aspect-ratio: 1 / 1;
    background: var(--color-placeholder);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image-pair-item video,
.project-image-pair-item img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
    border-radius: 8px;
}

/* ————————————————————————————————
   Project page — content blocks
   ———————————————————————————————— */

.project-content {
    padding: 0;
}

.content-block {
    padding: var(--space-xl) var(--page-padding);
}

.content-label {
    display: block;
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-body);
    line-height: var(--line-height-body);
    color: var(--color-gray);
}

.content-statement {
    font-size: var(--font-size-body-lg);
    font-weight: var(--font-weight-body-lg);
    line-height: var(--line-height-body-lg);
    letter-spacing: var(--letter-spacing-body-lg);
    color: var(--color-black);
}

.content-paragraph {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-body);
    line-height: var(--line-height-body);
    letter-spacing: var(--letter-spacing-body);
    color: var(--color-gray);
}

/* — Content block spacing: sibling combinator rules — */
.content-label + .content-statement {
    margin-top: var(--space-s);
}

.content-statement + .content-statement {
    margin-top: var(--space-m);
}

.content-statement + .content-paragraph {
    margin-top: var(--space-m);
}

.content-paragraph + .content-paragraph {
    margin-top: var(--space-s);
}

.project-thanks {
    font-size: var(--font-size-body-lg);
    font-weight: var(--font-weight-body-lg);
    line-height: var(--line-height-body-lg);
    color: var(--color-gray);
    padding: var(--space-l) var(--page-padding) var(--space-m);
}

/* ————————————————————————————————
   About page
   ———————————————————————————————— */

.about {
    padding: var(--space-xl) var(--page-padding) var(--space-l);
}

.about-headline {
    font-size: var(--font-size-display);
    font-weight: var(--font-weight-display);
    line-height: var(--line-height-display);
    letter-spacing: var(--letter-spacing-display);
    font-variation-settings: "wght" 600;
    margin-bottom: var(--space-l);
}

.about-body {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-body);
    line-height: var(--line-height-body);
    letter-spacing: var(--letter-spacing-body);
    color: var(--color-gray);
    margin-bottom: var(--space-m);
}

.about-image {
    width: 100%;
    aspect-ratio: 3 / 4;
    background: var(--color-placeholder);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-l);
}

/* ————————————————————————————————
   Footer
   ———————————————————————————————— */

.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-l) var(--page-padding) var(--space-m);
    font-size: var(--font-size-caption);
    line-height: var(--line-height-caption);
    color: var(--color-gray);
}

.footer-links {
    display: flex;
    gap: var(--space-s);
}

.footer-links a {
    color: var(--color-gray);
}

/* ————————————————————————————————
   Motion — page load
   ———————————————————————————————— */

@-webkit-keyframes fadeSlideUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(20px);
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(20px);
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

body {
    -webkit-animation: fadeSlideUp 0.6s ease-out both;
    animation: fadeSlideUp 0.6s ease-out both;
}

/* ————————————————————————————————
   Motion — scroll reveal
   ———————————————————————————————— */

.js .reveal {
    opacity: 0;
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
    -webkit-transition:
        opacity 0.6s ease-out,
        -webkit-transform 0.6s ease-out;
    transition:
        opacity 0.6s ease-out,
        transform 0.6s ease-out;
}

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

/* ————————————————————————————————
   Motion — home project hover
   ———————————————————————————————— */

.project {
    position: relative;
    overflow: hidden;
    padding: var(--page-padding);
    border-radius: var(--border-radius);
}

.project::before {
    content: "";
    position: absolute;
    width: 200%;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    background: var(--project-color, var(--color-placeholder));
    left: var(--x, 50%);
    top: var(--y, 50%);
    -webkit-transform: translate(-50%, -50%) scale(0);
    transform: translate(-50%, -50%) scale(0);
    -webkit-transition: -webkit-transform 0.45s ease-in;
    transition: transform 0.45s ease-in;
}

.project:hover::before {
    -webkit-transform: translate(-50%, -50%) scale(1);
    transform: translate(-50%, -50%) scale(1);
    -webkit-transition: -webkit-transform 0.7s ease-out 0.08s;
    transition: transform 0.7s ease-out 0.08s;
}

.project-image,
.project-info {
    position: relative;
}

.project-title,
.project-description {
    -webkit-transition: color 0.3s ease;
    transition: color 0.3s ease;
}

.project:hover .project-title,
.project:hover .project-description {
    color: var(--color-white);
}

/* ————————————————————————————————
   Responsive — tablet (768px)
   ———————————————————————————————— */

@media (min-width: 768px) {
    :root {
        --page-padding: 2.5rem;
    }
}

/* ————————————————————————————————
   Responsive — desktop (1024px)
   ———————————————————————————————— */

@media (min-width: 1024px) {
    :root {
        --page-padding: 0.5rem;
        --space-xl: 8rem;

        /* — Type scale: desktop — */
        --font-size-display: 3.5rem; /* 48px */
        --line-height-display: 4.5rem; /* 72px */

        --font-size-heading: 1.75rem; /* 28px */
        --line-height-heading: 2.75rem; /* 44px */

        --font-size-body-lg: 2.25rem; /* 36px */
        --line-height-body-lg: 3.25rem; /* 52px */

        --font-size-body: 1.5rem; /* 24px */
        --line-height-body: 2.25rem; /* 36px */

        --font-size-caption: 1.125rem; /* 18px */
        --line-height-caption: 1.625rem; /* 26px */
    }

    .project {
        display: flex;
        flex-direction: row;
        gap: var(--space-l);
        align-items: flex-start;
    }

    .hero h1 {
        max-width: 80%;
    }

    .hero h1 br {
        display: block;
        align-items: center;
    }

    .project-info {
        flex: 1;
        order: 1;
        min-width: 0;
    }

    .project-image {
        flex: 2;
        order: 2;
        width: auto;
        min-width: 0;
    }

    .project-title {
        margin-top: 0;
    }

    /* About page */
    .about {
        display: flex;
        flex-direction: row;
        gap: var(--space-l);
        align-items: flex-start;
    }

    .about-image {
        flex: 1;
        width: auto;
        margin-bottom: 0;
    }

    .about-text {
        flex: 1;
    }

    .about-headline {
        margin-bottom: var(--space-m);
    }

    /* Project page */
    .project-header {
        padding-top: 30vh;
        padding-bottom: var(--space-l);
    }

    .content-block,
    .project-thanks {
        max-width: 820px;
        margin: 0 auto;
    }

    .project-image-full,
    .project-image-bleed,
    .project-image-pair {
        margin-top: var(--space-l);
        margin-bottom: var(--space-l);
        width: 100%;
        border-radius: var(--border-radius);
    }

    .project-image-pair {
        flex-direction: row;
    }

    .project-image-pair-item {
        flex: 1;
        min-width: 0;
    }
}

/* ————————————————————————————————
   Responsive — large desktop (1900px)
   ———————————————————————————————— */

@media (min-width: 1900px) {
    :root {
        --page-padding: 5rem;
        --space-xl: 10rem;

        /* — Type scale: large desktop — */
        --font-size-display: 4.5rem; /* 64px */
        --line-height-display: 6rem; /* 96px */

        --font-size-heading: 2.25rem; /* 36px */
        --line-height-heading: 3.5rem; /* 56px */

        --font-size-body-lg: 3rem; /* 48px */
        --line-height-body-lg: 4.5rem; /* 72px */

        --font-size-body: 2rem; /* 32px */
        --line-height-body: 3rem; /* 48px */

        --font-size-caption: 1.5rem; /* 24px */
        --line-height-caption: 2.25rem; /* 36px */
    }

    body {
        max-width: 2400px;
    }
}