:root {
    --sea-green: #1F6F73;
    --pelagic-teal: #1F6F73;
    --deep-teal: #15575b;
    --foam: #f4f1e8;
    --paper: #f4f1e8;
    --soft-paper: rgba(244, 241, 232, 0.84);
    --line: rgba(244, 241, 232, 0.32);
    --image-shadow: rgba(0, 0, 0, 0.28);
    --chapter-fade-duration: 1024ms;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--paper);
}

/* Home page */

.home-page {
    background-color: var(--sea-green);
    color: var(--foam);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: clamp(1rem, 3vw, 2rem);
    font-family: "Cinzel", serif;
}

.container {
    width: min(94vw, 980px);
    text-align: center;
}

.splash-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.brand-title {
    margin: 0 auto;
    line-height: 1;
}

.brand-arc {
    display: block;
    width: min(68vw, 720px);
    height: auto;
    margin: 0 auto clamp(-3.15rem, -4vw, -1.25rem);
    overflow: visible;
}

.brand-arc svg {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
}

.brand-arc text {
    font-family: "Cinzel", serif;
    font-size: 82px;
    font-weight: 400;
    letter-spacing: 0.075em;
    text-transform: uppercase;
    fill: var(--foam);
}

.brand-sigil {
    display: block;
    width: clamp(9rem, 18vw, 12rem);
    height: auto;
    margin: clamp(-4.75rem, -7vw, -1.5rem) auto clamp(0.85rem, 2vw, 1.5rem);
}

.society-name {
    position: relative;
    z-index: 2;
    margin: 0;
    font-size: clamp(1.3rem, 3vw, 2.35rem);
    font-weight: 400;
    line-height: 1.18;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.ruins-figure {
    margin: clamp(0.75rem, 2vw, 1.5rem) auto clamp(1.5rem, 3vw, 2.75rem);
    text-align: center;
}

.ruins-image {
    display: block;
    width: min(86vw, 560px);
    height: auto;
    margin: 0 auto;
    box-shadow: 0 0.4rem 1.4rem var(--image-shadow);
}

.ruins-figure figcaption {
    margin-top: clamp(0.35rem, 1vw, 0.65rem);
    font-size: clamp(0.58rem, 1.2vw, 0.7rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.7;
}

.chapter-name {
    margin: 0;
    width: 100%;
    text-align: center;
    font-size: clamp(1.65rem, 4.5vw, 3.45rem);
    font-weight: 500;
    line-height: 1.08;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 1;
    transition: opacity var(--chapter-fade-duration) ease-in-out;
    white-space: nowrap;
}

.chapter-name.fade-out {
    opacity: 0;
}

.established {
    margin-top: 0.15rem;
    font-size: clamp(1rem, 2.5vw, 2rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.motto {
    margin-top: clamp(1rem, 2vw, 1.45rem);
    font-size: clamp(0.82rem, 1.45vw, 1.05rem);
    font-style: italic;
    font-weight: 400;
    line-height: 1.55;
    letter-spacing: 0.13em;
}

.motto p {
    margin: 0;
}

.site-nav {
    margin-top: clamp(1.65rem, 3.6vw, 3rem);
    font-size: clamp(0.82rem, 1.45vw, 1rem);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.site-nav a {
    color: var(--foam);
    text-decoration: underline;
    text-decoration-thickness: 0.06em;
    text-underline-offset: 0.35em;
    opacity: 0.86;
    transition: opacity 200ms ease-in-out;
}

.site-nav a:hover,
.site-nav a:focus {
    opacity: 1;
}

/* About page */

.about-page {
    background:
        radial-gradient(circle at top, rgba(244, 241, 232, 0.08), transparent 34rem),
        linear-gradient(180deg, var(--pelagic-teal), var(--deep-teal));
    color: var(--paper);
}

.page {
    width: min(88vw, 880px);
    margin: 0 auto;
    padding: 4rem 0 5rem;
}

.site-header {
    margin-bottom: 3rem;
    text-align: center;
}

.eyebrow {
    margin: 0 0 0.75rem;
    font-family: "Cinzel", serif;
    font-size: 0.82rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--soft-paper);
}

.about-page h1,
.about-page h2 {
    font-family: "Cinzel", serif;
    font-weight: 500;
    text-transform: uppercase;
}

.about-page h1 {
    margin: 0;
    font-size: clamp(2rem, 6vw, 4rem);
    letter-spacing: 0.08em;
}

.about-page h2 {
    margin: 3rem 0 1rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--line);
    font-size: clamp(1.25rem, 3vw, 1.8rem);
    letter-spacing: 0.08em;
}

.about-page p {
    font-family: "Libre Baskerville", Georgia, serif;
    font-size: clamp(1rem, 2vw, 1.12rem);
    line-height: 1.78;
    color: var(--soft-paper);
}

.about-page strong {
    color: var(--paper);
}

.intro {
    font-size: clamp(1.08rem, 2.2vw, 1.25rem);
    color: var(--paper);
}

.back-link {
    display: block;
    text-align: center;
    margin-top: 3rem;
    font-family: "Cinzel", serif;
    font-size: 0.85rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--paper);
    text-decoration: none;
    opacity: 0.82;
    transition: opacity 200ms ease-in-out;
}

.back-link:hover,
.back-link:focus {
    opacity: 1;
    text-decoration: underline;
    text-underline-offset: 0.35em;
}

/* Responsive */

@media (max-width: 768px) {
    .home-page {
        align-items: flex-start;
        padding-top: clamp(1.25rem, 7vw, 3rem);
    }

    .brand-arc {
        width: min(96vw, 620px);
        margin-bottom: clamp(-1rem, -3vw, -0.35rem);
    }

    .brand-arc text {
        font-size: 78px;
        letter-spacing: 0.065em;
    }

    .brand-sigil {
        width: clamp(8.25rem, 42vw, 11rem);
        margin: clamp(-4rem, -9vw, -2.25rem) auto clamp(1rem, 3vw, 1.65rem);
    }

    .society-name {
        font-size: clamp(1.15rem, 4.8vw, 1.65rem);
        letter-spacing: 0.07em;
    }

    .ruins-figure {
        margin: clamp(1rem, 4vw, 1.75rem) auto clamp(1.65rem, 5vw, 2.5rem);
    }

    .ruins-image {
        width: min(86vw, 560px);
    }

    .chapter-name {
        font-size: clamp(1.05rem, 5.2vw, 1.95rem);
        letter-spacing: 0.08em;
    }

    .established {
        font-size: clamp(0.8rem, 3.5vw, 1.25rem);
        letter-spacing: 0.09em;
    }

    .motto {
        font-size: clamp(0.75rem, 3vw, 0.95rem);
        letter-spacing: 0.08em;
    }

    .site-nav {
        margin-top: 1.75rem;
        letter-spacing: 0.12em;
    }

    .page {
        width: min(90vw, 640px);
        padding: 3rem 0 4rem;
    }

    .site-header {
        margin-bottom: 2.25rem;
    }

    .about-page h1 {
        letter-spacing: 0.05em;
    }

    .about-page h2 {
        margin-top: 2.5rem;
    }
}

@media (max-width: 480px) {
    .brand-arc {
        margin-bottom: clamp(-0.85rem, -2.5vw, -0.25rem);
    }

    .brand-arc text {
        font-size: 74px;
        letter-spacing: 0.045em;
    }

    .brand-sigil {
        width: clamp(8rem, 45vw, 10.5rem);
        margin-top: clamp(-3.75rem, -9vw, -2rem);
    }

    .ruins-figure figcaption {
        font-size: clamp(0.55rem, 2vw, 0.65rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-nav a,
    .back-link {
        transition: none;
    }
}