:root {
    --base-value: clamp(16px, 1.5vw, 18px);
    --content-max-width: 900px;

    --color-primary: #ddccbb;
    --color-secondary: #E82356;
    --color-tertiary: #ccaa66;
    --color-white: #ffffff;
    --color-gray-100: #e7e7e7;
    --color-gray-200: #999;
    --color-gray-300: #515253;
    --color-gray-400: #28292a;
    --color-black: #080b0c;
    --color-black-trans: rgb(from var(--color-black) r g b / 0.5);
    --color-black-gradient: linear-gradient(180deg, var(--color-black-trans) 50%, var(--color-black));

    --font-sans: "Public Sans", system-ui, Arial, sans-serif;
    --font-serif: "EB Garamond", Garamond, serif;
    --font-size-10: 0.625rem;
    --font-size-12: 0.75rem;
    --font-size-16: 1rem;
    --font-size-24: 1.5rem;
    --font-size-32: clamp(1.5rem, 3vw, 1.875rem);
    --font-size-72: 4.5rem;

    --line-height-base: 1;
    --line-height-single: var(--line-height-base);
    --line-height-150: calc(var(--line-height-base) * 1.5);
    --line-height-double: calc(var(--line-height-base) * 2);
    --letter-spacing-tighter: -0.1rem;
    --letter-spacing-tight: -0.01rem;
    --letter-spacing-normal: 0;
    --letter-spacing-loose: 0.075rem;
    --letter-spacing-looser: 0.15rem;
}
/* 
 * 
 * Phosphor icons. 
 *
 */
.ph-light {
    font-size: 2rem;
    width: min-content;
}
.ph-bold {
    font-size: 1rem;
    width: min-content;
}
html {
    background-color: var(--color-gray-100);
    color: var(--color-black);
}
p {
    font-family: var(--font-serif);
    font-size: var(--font-size-16);
    line-height: var(--line-height-150);
    font-style: normal;
    font-weight: 400;
}
p a {
    color: var(--color-black);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px !important;
    text-decoration-color: var(--color-secondary);
    transition: all 0.3s ease;
}
p a:hover {
    color: var(--color-secondary);
    text-decoration-color: transparent;
}
p.lore {
    font-family: var(--font-sans);
    font-style: italic;
    letter-spacing: var(--letter-spacing-tight);
}
p + p {
    padding-top: var(--spacing-100);
}
h2 {
    font-family: var(--font-serif);
    font-size: var(--font-size-72);
    line-height: var(--line-height-single);
    font-style: italic;
    letter-spacing: var(--letter-spacing-tighter);
    font-weight: 400;
}
.background {
    background-color: var(--color-gray-100);
}
.wallpaper { /* Theme-specific utility class "wallpaper" will contain any image or video to the container it's inside. */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
    object-fit: cover;
}
/* 
 *
 *
 * Base page content is broken into "prose" and "sidebar" containers, which have unique stylings and interactions with the skeleton.css grid.
 *
 *
 */
.prose {
    grid-column-start: 1;
}
.sidebar {
    font-family: var(--font-sans);
    font-size: var(--font-size-12);
    padding-bottom: var(--spacing-200);
}
.sidebar p {
    font-family: inherit;
    font-size: inherit;
    flex: initial;
}
.sidebar > .row {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-50);
    padding: var(--spacing-50) 0;
    border-bottom: 1px solid var(--color-gray-200);
}
@media (min-width: 48rem) {
    .prose {
        grid-row-start: 1;
    }
    .sidebar {
        grid-column-start: 9;
    }
}
/* 
 *
 *
 * Button styles.
 *
 *
 */
.button-tertiary {
    font-family: var(--font-serif);
    font-size: var(--font-size-12);
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-loose);
    transition: all 0.3s ease;
}
.button-tertiary {
    padding: var(--spacing-50);
    color: var(--color-white);
    text-decoration: underline !important;
    text-underline-offset: var(--spacing-50);
    text-decoration-thickness: 1px !important;
    text-decoration-color: var(--color-tertiary) !important;
    transition: all 0.3s ease;
}
.button-tertiary:hover, .button-tertiary:active, .nav-selected /* This class selector is applied to an active page in the navigation */ {
    color: var(--color-tertiary);
    text-decoration-color: transparent !important;
}
/* 
 * 
 * Hero and opening graphics and styling. 
 *
 */
p.subtitle {
    font-family: var(--font-sans);
    font-size: var(--font-size-10);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: var(--letter-spacing-loose);
}
@media (min-width: 48rem) {
    p.subtitle {
        font-size: var(--font-size-12);
    }
}
.header {
    background: var(--color-black-gradient);
    display: flex;
    flex-direction: column;
    position: relative;
    text-align: center;
    justify-content: center;
    align-items: center;
    min-height: 600px;
    height: 80vh;
    width: 100%;
    color: var(--color-white);
}
.opener {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-500) 0;
}

.opener p {
    font-size: var(--font-size-32);
    line-height: var(--line-height-150);
    font-weight: 400;
}
/* 
 * 
 * Chapter markers.
 *
 */
.chapter {
    display: flex;
    flex-direction: column;
    position: relative;
    text-align: center;
    justify-content: center;
    align-items: center;
    min-height: 600px;
    height: 90vh;
    width: 100%;
}
.chapter .wallpaper {
    animation: parallax linear;
    animation-timeline: view(-2rem); 
}
@keyframes parallax {
  from {
    top: -10rem;
  }
  to {
    top: 10rem;
  }
}
.ch-plate {
    display: flex;
    width: 22rem;
    height: 30rem;
    padding: var(--spacing-100);
    background-color: var(--color-white);
    margin: 0 auto;
    align-items: center;
    justify-content: center;
    box-shadow: rgb(from var(--color-black) r g b / 0.2) 0 0 1rem 1rem;
}
.ch-outline {
    display: flex;
    padding: var(--spacing-100);
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    flex: 1 0 0;
    align-self: stretch;
    border: thick double var(--color-gray-100);
}
.ch-outline > .description {
    font-family: var(--font-sans);
    font-size: var(--font-size-12);
    text-transform: uppercase;
    width: 15ch;
}
.ch-title {
    display: flex;
    padding-bottom: var(--spacing-300);
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-200);
    align-self: stretch;
}
.ch-title > .eyebrow {
    font-size: var(--font-size-24);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-looser);
    line-height: var(--line-height-single);
}
.ch-title > hr {
    width: 3rem;
}
/* 
 *
 * Footer.
 *
 */
footer {
    background: var(--color-white);
}
footer p {
    font-family: var(--font-sans);
    font-size: var(--font-size-12);
}