/* Colors, type and shapes from the app's Callie theme (app/src/main/java/.../theme/Color.kt),
   so the site looks like the app. */

@font-face {
    font-family: "Nunito";
    src: url("fonts/Nunito-Variable.ttf") format("truetype");
    font-weight: 200 1000;
    font-display: swap;
}

@font-face {
    font-family: "Fraunces";
    src: url("fonts/Fraunces-Variable.ttf") format("truetype");
    font-weight: 100 900;
    font-display: swap;
}

:root {
    color-scheme: dark;
    --background: #1c1220;
    --surface: #261a2a;
    --surface-alt: #33243a;
    --hairline: #2c2031;
    --border: #3d2c42;
    --text: #f6eef5;
    --text-muted: #c9b7c6;
    --text-faint: #9a8797;
    --accent: #f08fb8;
    --accent-text: #2e0f20;
    --edge: #140c17;
    --accent-edge: #a64b7a;
    --shadow: rgba(0, 0, 0, 0.5);
    --radius: 11px;
    --radius-large: 16px;
}

:root[data-theme="light"] {
    color-scheme: light;
    --background: #fbf5f8;
    --surface: #fffafc;
    --surface-alt: #f3e7ee;
    --hairline: #efe2e9;
    --border: #e0ccd7;
    --text: #2b1a26;
    --text-muted: #6b5562;
    --text-faint: #8f7a87;
    --accent: #e45f97;
    --accent-text: #2e0f20;
    --edge: #dcc8d3;
    --accent-edge: #a83a6d;
    --shadow: rgba(92, 42, 71, 0.18);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: "Nunito", system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: 60rem;
    margin: 0 auto;
    padding: 2rem 1rem 5rem;
}

.prose {
    max-width: 42rem;
}

header.site {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3.5rem;
}

header.site a.name {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: "Fraunces", Georgia, serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

header.site a.name img {
    width: 36px;
    height: 36px;
}

header.site .tagline {
    color: var(--text-faint);
    font-size: 0.95rem;
    font-weight: 600;
}

header.site .spacer { flex: 1; }

/* A sticker: a raised face over a darker edge, as the app's buttons are. */
.sticker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 40px;
    padding: 0 1.1rem;
    border: 0;
    border-radius: var(--radius);
    background: var(--surface-alt);
    box-shadow: 0 3px 0 var(--edge);
    color: var(--text);
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.sticker:hover { transform: translateY(-1px); box-shadow: 0 4px 0 var(--edge); }
.sticker:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--edge); }

.sticker.accent {
    background: var(--accent);
    box-shadow: 0 3px 0 var(--accent-edge);
    color: var(--accent-text);
}

.sticker.accent:hover { box-shadow: 0 4px 0 var(--accent-edge); }
.sticker.accent:active { box-shadow: 0 1px 0 var(--accent-edge); }

.sticker:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

button.theme {
    width: 40px;
    padding: 0;
}

button.theme svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* The moon offers dark from light; the sun offers light from dark. */
:root[data-theme="light"] .sun,
:root:not([data-theme="light"]) .moon { display: none; }

h1, h2 {
    font-family: "Fraunces", Georgia, serif;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    margin: 0 0 1rem;
}

h1 em {
    font-style: normal;
    color: var(--accent);
}

h2 {
    font-size: 1.6rem;
    margin: 3.5rem 0 1rem;
}

p.lead {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin: 0 0 2rem;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.slides {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    gap: 1.5rem;
    /* Room inside the scrolling track for the screenshots' shadows. */
    padding: 0 1rem 2.5rem;
    margin: 0 -1rem -1.5rem;
    scroll-padding-inline: 1rem;
}

.slides::-webkit-scrollbar { display: none; }

.slides:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
    border-radius: var(--radius-large);
}

/* Phone screenshots are tall, so a few sit side by side rather than one filling the width. */
.slide {
    flex: 0 0 min(17rem, 78%);
    margin: 0;
    scroll-snap-align: start;
}

.shot {
    border-radius: 1.6rem;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 14px 36px var(--shadow);
}

.shot img {
    display: block;
    width: 100%;
    height: auto;
}

.slide figcaption {
    margin-top: 1.1rem;
    text-align: center;
    color: var(--text-muted);
}

/* The arrows and dots need the script, so they show once it has run. */
.controls {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.carousel.ready .controls { display: flex; }

.controls .sticker {
    padding: 0 0.6rem;
}

.controls svg {
    width: 1.1rem;
    height: 1.1rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.dots {
    display: flex;
    gap: 0.5rem;
}

.dots button {
    width: 0.65rem;
    height: 0.65rem;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: var(--border);
    cursor: pointer;
}

.dots button[aria-current="true"] { background: var(--accent); }

.dots button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: no-preference) {
    .slides { scroll-behavior: smooth; }
}

:root[data-theme="light"] .shot .dark,
:root:not([data-theme="light"]) .shot .light { display: none; }

.features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
    gap: 1rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.features li {
    background: var(--surface);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-large);
    padding: 1.1rem 1.25rem;
}

.features strong {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 800;
}

.features span { color: var(--text-muted); }

a { color: var(--accent); }

code, pre {
    font-family: ui-monospace, "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
}

pre {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    overflow-x: auto;
}

.prose ul { padding-left: 1.25rem; }
.prose li { margin: 0.35rem 0; }

hr {
    border: 0;
    border-top: 1px solid var(--hairline);
    margin: 3.5rem 0 1.5rem;
}

footer.site {
    color: var(--text-faint);
    font-size: 0.9rem;
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

footer.site a { color: var(--text-muted); }

.meta {
    color: var(--text-faint);
    font-size: 0.9rem;
    margin-top: -0.5rem;
}

@media (max-width: 40rem) {
    header.site .tagline { display: none; }
    header.site { margin-bottom: 2.5rem; }
}