/*
 * Keystone Light — framework
 *
 * Written fresh rather than harvested: the sites built with Keystone carry
 * their design in per-page CSS or in site-specific template parts, so there
 * was no shared framework to lift. This is a floor, not a design system — the
 * shell around a page, plus tokens a site can override in one place.
 *
 * Everything is namespaced .ks-* except the reset and the token block, so it
 * cannot collide with the markup a Keystone page brings with it.
 */

/* ---------------------------------------------------------------- tokens */

:root {
    --ks-text:        #1f2933;
    --ks-text-muted:  #52606d;
    --ks-bg:          #ffffff;
    --ks-bg-alt:      #f5f7fa;
    --ks-border:      #dbe1e8;
    --ks-accent:      #1d6fd6;
    --ks-accent-text: #ffffff;

    --ks-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --ks-font-heading: var(--ks-font);
    --ks-line: 1.65;

    --ks-step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
    --ks-step-0:  clamp(1rem, 0.96rem + 0.2vw, 1.09rem);
    --ks-step-1:  clamp(1.2rem, 1.12rem + 0.4vw, 1.45rem);
    --ks-step-2:  clamp(1.44rem, 1.3rem + 0.7vw, 1.94rem);
    --ks-step-3:  clamp(1.73rem, 1.5rem + 1.15vw, 2.59rem);
    --ks-step-4:  clamp(2.07rem, 1.72rem + 1.77vw, 3.45rem);

    --ks-space-1: .25rem;
    --ks-space-2: .5rem;
    --ks-space-3: 1rem;
    --ks-space-4: 1.5rem;
    --ks-space-5: 2.5rem;
    --ks-space-6: 4rem;

    --ks-width: 1200px;
    --ks-width-prose: 68ch;
    --ks-radius: 6px;
}

/* ---------------------------------------------------------------- reset */

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

body {
    margin: 0;
    font-family: var(--ks-font);
    font-size: var(--ks-step-0);
    line-height: var(--ks-line);
    color: var(--ks-text);
    background: var(--ks-bg);
    -webkit-font-smoothing: antialiased;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }

h1, h2, h3, h4 {
    font-family: var(--ks-font-heading);
    line-height: 1.2;
    margin: 0 0 var(--ks-space-3);
    text-wrap: balance;
}
h1 { font-size: var(--ks-step-4); }
h2 { font-size: var(--ks-step-3); }
h3 { font-size: var(--ks-step-2); }
h4 { font-size: var(--ks-step-1); }

a { color: var(--ks-accent); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--ks-accent);
    outline-offset: 2px;
}

/* ---------------------------------------------------------------- shell */

.ks-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--ks-bg);
    color: var(--ks-text);
    padding: var(--ks-space-3);
    z-index: 100;
}
.ks-skip:focus { left: 0; }

.ks-container {
    width: 100%;
    max-width: var(--ks-width);
    margin-inline: auto;
    padding-inline: var(--ks-space-4);
}

.ks-section { padding-block: var(--ks-space-6); }
.ks-center  { text-align: center; }
.ks-prose   { max-width: var(--ks-width-prose); }

.ks-header {
    border-bottom: 1px solid var(--ks-border);
    background: var(--ks-bg);
}
.ks-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--ks-space-4);
    min-height: 72px;
    flex-wrap: wrap;
}
.ks-brand-name {
    font-weight: 700;
    font-size: var(--ks-step-1);
    text-decoration: none;
    color: var(--ks-text);
}
.ks-nav .ks-menu {
    display: flex;
    gap: var(--ks-space-4);
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}
.ks-nav a { text-decoration: none; }
.ks-nav a:hover { text-decoration: underline; }

.ks-main { display: block; }

.ks-footer {
    border-top: 1px solid var(--ks-border);
    background: var(--ks-bg-alt);
    padding-block: var(--ks-space-5);
    margin-top: var(--ks-space-6);
}
.ks-footer-text { margin: 0; color: var(--ks-text-muted); font-size: var(--ks-step--1); }

/* ---------------------------------------------------------------- pieces */

.ks-title { margin-bottom: var(--ks-space-4); }

.ks-button {
    display: inline-block;
    padding: .7em 1.4em;
    border-radius: var(--ks-radius);
    background: var(--ks-accent);
    color: var(--ks-accent-text);
    text-decoration: none;
    font-weight: 600;
    border: 0;
    cursor: pointer;
}
.ks-button:hover { filter: brightness(.94); }

.ks-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--ks-space-5);
}
.ks-card { min-width: 0; }
.ks-card-media img { border-radius: var(--ks-radius); }
.ks-card-title { font-size: var(--ks-step-1); margin: var(--ks-space-3) 0 var(--ks-space-1); }
.ks-card-title a { text-decoration: none; color: var(--ks-text); }
.ks-card-title a:hover { color: var(--ks-accent); }
.ks-card-meta { margin: 0 0 var(--ks-space-2); color: var(--ks-text-muted); font-size: var(--ks-step--1); }
.ks-card-excerpt p { margin: 0; }

.ks-pagination { margin-top: var(--ks-space-5); }
.ks-pagination .page-numbers {
    display: inline-block;
    padding: .4em .8em;
    border: 1px solid var(--ks-border);
    border-radius: var(--ks-radius);
    text-decoration: none;
    margin-right: var(--ks-space-1);
}
.ks-pagination .current { background: var(--ks-accent); color: var(--ks-accent-text); border-color: var(--ks-accent); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}