/* ─────────────────────────────────────────────────
   PROJECT PAGES
───────────────────────────────────────────────── */

.project-main {
    padding-top: 5.5rem;
}

.project-hero {
    min-height: 78dvh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 2rem;
    padding: 3rem 1.25rem 2.5rem;
    background: var(--color-hero-bg);
}

.project-kicker {
    font-family: var(--font-mono);
    font-size: clamp(0.625rem, 0.75vw, 0.75rem);
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.project-title {
    max-width: 11ch;
    font-family: var(--font-sans);
    font-size: clamp(3rem, 13vw, 8.5rem);
    font-weight: 800;
    line-height: 0.95;
    color: var(--color-fg);
}

.project-summary {
    max-width: 43rem;
    font-size: clamp(1.125rem, 3.7vw, 1.75rem);
    line-height: 1.25;
    color: var(--color-fg);
}

.project-meta {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.project-meta-item {
    display: grid;
    gap: 0.35rem;
}

.project-meta-item dt {
    font-family: var(--font-mono);
    font-size: clamp(0.625rem, 0.75vw, 0.75rem);
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.project-meta-item dd {
    font-family: var(--font-ui);
    font-size: clamp(0.9375rem, 1.2vw, 1.125rem);
    color: var(--color-fg);
}

.project-page-nav {
    display: flex;
    gap: 0.45rem;
    overflow-x: auto;
    padding: 1rem 1.25rem 1.1rem;
    border-bottom: 1px solid var(--color-border);
    scrollbar-width: none;
}

.project-page-nav::-webkit-scrollbar {
    display: none;
}

.project-page-nav a {
    flex: 0 0 auto;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-fg);
    text-decoration: none;
    white-space: nowrap;
    transition: background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);
}

.project-page-nav a:hover {
    background: var(--color-hero-bg);
    border-color: rgba(0, 0, 0, 0.28);
}

.project-content {
    padding: 3.25rem 1.25rem 4rem;
}

.project-section {
    display: grid;
    gap: 1.25rem;
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
}

.project-section:first-child {
    padding-top: 0;
    border-top: 0;
}

.project-section {
    scroll-margin-top: 7.5rem;
}

.project-section h2 {
    max-width: 14ch;
    font-family: var(--font-sans);
    font-size: clamp(2rem, 7vw, 4.5rem);
    font-weight: 800;
    line-height: 1;
    color: var(--color-fg);
}

.project-section p,
.project-section li {
    max-width: 42rem;
    font-size: clamp(1rem, 2.2vw, 1.375rem);
    line-height: 1.4;
    color: var(--color-fg);
}

.project-section p + p {
    margin-top: 0.9rem;
}

.project-section-lead {
    max-width: 44rem;
}

.project-section ul {
    display: grid;
    gap: 0.6rem;
}

.project-nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 2rem 1.25rem 4rem;
    border-top: 1px solid var(--color-border);
}

.project-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-sans);
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    font-weight: 700;
    color: var(--color-fg);
    text-decoration: none;
    transition: opacity var(--duration-fast) var(--ease-out);
}

.project-nav a:hover {
    opacity: 0.55;
}

.project-nav-label {
    display: block;
    margin-bottom: 0.2rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-muted);
}

@media (min-width: 48rem) {
    .project-main {
        padding-top: 6.5rem;
    }

    .project-hero {
        min-height: 82dvh;
        padding: 4rem 2rem;
    }

    .project-meta {
        grid-template-columns: repeat(4, 1fr);
        padding: 2.5rem 2rem;
    }

    .project-page-nav {
        position: sticky;
        top: 5.65rem;
        z-index: 30;
        padding: 1.1rem 2rem;
        background: rgba(255, 255, 255, 0.94);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }

    .project-page-nav a {
        font-size: 0.6875rem;
        padding: 0.7rem 0.9rem;
    }

    .project-content {
        padding: 5rem 2rem;
    }

    .project-section {
        grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1fr);
        gap: 3rem;
        padding: 4rem 0;
    }

    .project-section h2 {
        position: sticky;
        top: 7rem;
        align-self: start;
    }

    .project-nav {
        grid-template-columns: repeat(3, 1fr);
        padding: 2.5rem 2rem 5rem;
    }
}

@media (min-width: 64rem) {
    .project-main {
        padding-top: 7rem;
    }

    .project-hero {
        padding: 5rem 3rem;
    }

    .project-meta {
        padding: 3rem;
    }

    .project-page-nav {
        top: 6.2rem;
        padding-inline: 3rem;
    }

    .project-content {
        padding: 6rem 3rem;
    }

    .project-nav {
        padding: 3rem 3rem 6rem;
    }
}