/* Constants: a sandbox of ideas inside three fixed walls, then a sideways gallery of the constants. Tokens only. */

/* 1. Sandbox */
.c2-sand { position: relative; height: 100vh; height: 100svh; background: var(--color-bg); overflow: hidden; }
.c2-sand__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; cursor: grab; }
.c2-sand__canvas:active { cursor: grabbing; }
.c2-sand__text { position: relative; z-index: 1; pointer-events: none; padding: 8rem 4.5rem 0; display: grid; gap: var(--space-4); }
.c2-sand__title { font: var(--t-statement-xl); letter-spacing: var(--ls-statement-xl); }
.c2-def { display: grid; gap: var(--space-2); max-width: 30rem; font: var(--t-copy-16); color: var(--color-text); }
.c2-def dt { display: flex; align-items: baseline; gap: var(--space-3); padding-bottom: var(--space-2); border-bottom: 1px solid var(--border-1); }
.c2-def__word { font: var(--t-heading-20); letter-spacing: var(--ls-heading-20); }
.c2-def__pos { font: var(--t-copy-14); font-style: italic; color: var(--color-text-secondary); }
.c2-def dd { margin: 0; }
.c2-def b { font: var(--t-eyebrow); letter-spacing: var(--ls-eyebrow); margin-right: var(--space-1); color: var(--color-accent); }
.c2-sand__hint { font: var(--t-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--color-text-secondary); }
@media (max-width: 47.99em) { .c2-sand__text { padding: 6.5rem 3rem 0; } }

/* 2. Statement and the drifting list */
.c2-intro { background: var(--color-bg); padding: 8rem 0; overflow: hidden; }
.c2-intro__grid { display: grid; gap: var(--space-16); align-items: center; }
.c2-intro__copy { display: grid; gap: var(--space-8); }
.c2-intro__big { font: var(--t-heading-64); letter-spacing: var(--ls-heading-64); max-width: 22ch; }
.c2-intro__small { font: var(--t-copy-20); color: var(--color-text-body); max-width: 38rem; }
.c2-wrong { height: 26rem; overflow: hidden; position: relative; -webkit-mask-image: linear-gradient(transparent, var(--surface-inverse) 25%, var(--surface-inverse) 75%, transparent); mask-image: linear-gradient(transparent, var(--surface-inverse) 25%, var(--surface-inverse) 75%, transparent); }
.c2-wrong__list { list-style: none; display: grid; gap: var(--space-2); animation: c2-drift 40s linear infinite; }
.c2-wrong__list li { font: var(--t-heading-48); letter-spacing: var(--ls-heading-48); color: var(--color-text-secondary); text-decoration: line-through; text-decoration-thickness: .08em; text-decoration-color: var(--color-accent); }
@keyframes c2-drift { to { transform: translateY(-50%); } }
@media (min-width: 64em) { .c2-intro__grid { grid-template-columns: 1.3fr 1fr; gap: var(--space-24); } .c2-wrong { height: 32rem; } }

/* 3. The track: sideways on large screens, stacked below */
.c2-pin { position: relative; }
.c2-rail { display: grid; }
.c2-panel { min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: var(--space-20) 0; }
.c2-panel--light { background: var(--color-bg); color: var(--color-text); }
.c2-panel--dark { background: var(--surface-inverse); color: var(--color-text-inverse); }
.c2-panel--card { background: var(--surface-1); color: var(--color-text); }
.c2-panel__grid { display: grid; gap: var(--space-12); align-items: center; width: 100%; }
.c2-copy { display: grid; gap: var(--space-4); align-content: center; }
.c2-copy__kicker { font: var(--t-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; opacity: .65; }
.c2-copy__title { font: var(--t-statement-xl); letter-spacing: var(--ls-statement-xl); }
.c2-copy__line { font: var(--t-heading-32); letter-spacing: var(--ls-heading-32); max-width: 24ch; }
.c2-copy__body { font: var(--t-copy-16); opacity: .8; max-width: 32rem; }
@media (min-width: 64em) {
    .c2-track { height: 400vh; position: relative; }
    .c2-pin { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
    .c2-rail { display: flex; width: 300vw; height: 100%; will-change: transform; }
    .c2-panel { width: 100vw; min-height: 0; height: 100%; flex: none; padding: 0; }
    .c2-panel__grid { grid-template-columns: 1fr 1fr; gap: var(--space-24); }
}

/* Privacy: a padlock that snaps shut */
.c2-lock { display: grid; justify-items: center; gap: var(--space-6); }
.c2-lock svg { width: min(18rem, 60vw); height: auto; }
.c2-lock__shackle { transform-origin: 36px 108px; transform: translateY(-34px) rotate(-26deg); transition: transform var(--duration-slow) cubic-bezier(.34, 1.56, .64, 1); }
.c2-lock.is-closed .c2-lock__shackle { transform: none; }
.c2-lock__key { fill: var(--color-bg); stroke: none; transition: opacity var(--duration-base) ease .5s; opacity: .15; }
.c2-lock__key--stem { fill: none; stroke: var(--color-bg); stroke-width: 7; }
.c2-lock.is-closed .c2-lock__key { opacity: 1; }
.c2-lock__tags { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; }
.c2-lock__tags span { font: var(--t-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; padding: var(--space-2) var(--space-3); border: 1px solid var(--border-1-hover); border-radius: var(--radius-pill); opacity: 0; transform: translateY(8px); transition: opacity var(--duration-base) ease, transform var(--duration-slow) var(--ease-expo); }
.c2-lock.is-closed .c2-lock__tags span { opacity: 1; transform: none; }
.c2-lock.is-closed .c2-lock__tags span:nth-child(2) { transition-delay: .15s; }
.c2-lock.is-closed .c2-lock__tags span:nth-child(3) { transition-delay: .3s; }

/* Security: radar */
.c2-radar { position: relative; display: grid; place-items: center; }
.c2-radar__canvas { width: min(26rem, 80vw); aspect-ratio: 1; display: block; }
.c2-radar__tag { position: absolute; bottom: 0; right: 0; font: var(--t-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; opacity: .8; }
.c2-radar__tag b { color: var(--color-text-inverse); }

/* Scale: a counter and a field of people */
.c2-count { display: grid; gap: var(--space-6); }
.c2-count__row { display: flex; align-items: baseline; gap: var(--space-4); flex-wrap: wrap; }
.c2-count__n { font: var(--t-statement-lg); letter-spacing: var(--ls-statement-lg); font-variant-numeric: tabular-nums; }
.c2-count__l { font: var(--t-copy-20); opacity: .7; }
.c2-count__grid { display: grid; grid-template-columns: repeat(24, 1fr); gap: clamp(.2rem, .5vw, .4rem); }
.c2-count__grid i { aspect-ratio: 1; border-radius: 50%; background: var(--border-1); transition: background var(--duration-fast) ease, transform var(--duration-fast) ease; }
.c2-count__grid i.on { background: var(--surface-inverse); }
.c2-count__fast { display: inline-flex; align-items: center; gap: var(--space-2); font: var(--t-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; padding: var(--space-2) var(--space-3); border-radius: var(--radius-pill); background: var(--surface-inverse); color: var(--color-text-inverse); justify-self: start; }
.c2-count__fast i { width: .55rem; height: .55rem; border-radius: 50%; background: var(--color-accent); animation: c2-pulse 1.6s ease-in-out infinite; }
@keyframes c2-pulse { 50% { opacity: .35; } }

@media (prefers-reduced-motion: reduce) { .c2-wrong__list, .c2-count__fast i { animation: none; } }