/*
 * The coin sorter (includes/pieces/sorter.php): a brass hopper, a red enamel cabinet, glass tubes and
 * brass cups, the PIA piled on a plinth; gold, nickel and copper coins. One scale: --S, the tallest tube.
 */

.sorter { --H: 210px; --C: 80px; --S: calc(var(--H) - 26px); --tw: 60px; --plate: #fbf6e8; --plate-ink: #15171a;
	--cyl: linear-gradient(90deg, rgba(0, 0, 0, .34), rgba(255, 255, 255, .3) 30%, rgba(255, 255, 255, 0) 56%, rgba(0, 0, 0, .4)); }
.sorter__ch[data-ch="1"], .sorter__seg[data-seg="1"] { --m: #e2b247; --m-lt: #fbe7a6; --m-dk: #8a6116; }
.sorter__ch[data-ch="2"], .sorter__seg[data-seg="2"], .sorter__pile[data-top="2"] { --m: #c9ced6; --m-lt: #f4f6f8; --m-dk: #6b727c; }
.sorter__ch[data-ch="3"], .sorter__seg[data-seg="3"], .sorter__pile[data-top="3"] { --m: #d58a56; --m-lt: #f6c8a4; --m-dk: #7c3f1c; }
.sorter__pile { --m: #e2b247; --m-lt: #fbe7a6; --m-dk: #8a6116; }

/* The feed: the hopper (drag it) and what it poured. */
.sorter__feed { grid-column: 1 / -1; grid-row: 1; display: flex; align-items: flex-end; gap: 16px; position: relative; z-index: 2; margin-bottom: -4px; padding-left: 4px; }
.sorter__hopper { flex: 0 0 auto; width: 92px; cursor: ew-resize; touch-action: none; transform-origin: 50% 90%; transition: transform .25s; user-select: none; }
.sorter__hopper.is-pouring { transform: rotate(-9deg); transition: none; }
.sorter__hopper-svg { display: block; width: 100%; height: auto; overflow: visible; filter: drop-shadow(0 4px 3px rgba(0, 0, 0, .35)); }
.sorter__in { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; margin: 0 0 34px; padding: 8px 14px 9px; border-radius: 8px; background: var(--plate); color: var(--plate-ink); box-shadow: inset 0 0 0 2px #7a5513, var(--p-enamel), 0 2px 0 rgba(0, 0, 0, .3); }
.sorter__k { flex: 1 0 100%; font: 700 .95rem/1.1 var(--board-font); letter-spacing: .12em; text-transform: uppercase; color: #3c4148; }
.sorter__in b { font: 700 2.2rem/1 var(--board-font); font-variant-numeric: tabular-nums; }
.sorter__u { font-size: 1rem; color: #3c4148; }

/* Three channels and the PIA; each channel's cells take their own rows. */
.sorter__machine { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.2fr); grid-template-rows: auto var(--H) auto auto var(--C) auto; column-gap: 12px; }
.sorter__ch { display: contents; }
.sorter__ch[data-ch="1"] > * { grid-column: 1; }
.sorter__ch[data-ch="2"] > * { grid-column: 2; }
.sorter__ch[data-ch="3"] > * { grid-column: 3; }
.sorter__ch[data-ch="4"] > * { grid-column: 4; }
.sorter__cab { grid-column: 1 / 4; grid-row: 2 / 6; margin: 0 -6px; border-radius: 12px; background: radial-gradient(circle at 12px 12px, #e6c06a 3px, transparent 3.5px), radial-gradient(circle at calc(100% - 12px) 12px, #e6c06a 3px, transparent 3.5px), radial-gradient(circle at 12px calc(100% - 12px), #e6c06a 3px, transparent 3.5px), radial-gradient(circle at calc(100% - 12px) calc(100% - 12px), #e6c06a 3px, transparent 3.5px), linear-gradient(#a5241d, #7c1611 70%, #6a120e);
	box-shadow: inset 0 2px 0 rgba(255, 255, 255, .28), inset 0 -4px 0 rgba(0, 0, 0, .28), inset 0 0 0 1px #4a0b08, 0 18px 26px -16px rgba(0, 0, 0, .65); }
.sorter__rail { grid-column: 1 / 4; grid-row: 2; align-self: start; position: relative; z-index: 1; height: 14px; margin: 0 4px; border-radius: 4px; background: var(--p-brass); box-shadow: 0 2px 3px rgba(0, 0, 0, .45); }
.sorter__bay { grid-row: 2; position: relative; z-index: 1; margin: 18px 14px 0; border-radius: 10px 10px 4px 4px; background: linear-gradient(90deg, rgba(0, 0, 0, .34), rgba(0, 0, 0, .12), rgba(0, 0, 0, .34)); box-shadow: inset 0 3px 8px rgba(0, 0, 0, .5); perspective: 320px; }
.sorter__spout { position: absolute; left: 50%; top: -6px; bottom: calc(6px + var(--cap) * var(--S)); width: 14px; transform: translateX(-50%); background: linear-gradient(90deg, #8c6219, #f4dea0 40%, #cf9f40 60%, #6e4b12); border-radius: 0 0 3px 3px; }
.sorter__tube { position: absolute; left: 50%; bottom: 6px; width: var(--tw); height: calc(var(--cap) * var(--S)); transform: translateX(-50%); border-radius: 0 0 6px 6px; background: rgba(28, 8, 6, .45); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .35); }
.sorter__tube::before { content: ""; position: absolute; inset: 0; z-index: 2; border-radius: inherit; pointer-events: none; background: linear-gradient(90deg, rgba(255, 255, 255, .3), rgba(255, 255, 255, .06) 28%, transparent 55%, rgba(255, 255, 255, .16) 80%, transparent); }
.sorter__tube::after, .sorter__cup::after, .sorter__plinth::before { content: ""; position: absolute; left: -5px; right: -5px; top: -5px; height: 10px; z-index: 3; border-radius: 50%; background: var(--p-brass); box-shadow: 0 1px 2px rgba(0, 0, 0, .5); }

/* A pile of coins seen from a little above. */
.sorter__stack, .sorter__seg { background: var(--cyl), repeating-linear-gradient(to top, var(--m-dk) 0 1px, var(--m) 1px 3px); }
.sorter__stack { position: absolute; left: 3px; right: 3px; bottom: 0; height: calc(var(--v) * var(--S)); border-radius: 0 0 50% 50% / 0 0 5px 5px; }
.sorter__stack::before, .sorter__pile::after { content: ""; position: absolute; left: 0; right: 0; top: -5px; height: 10px; border-radius: 50%; background: radial-gradient(ellipse at 38% 40%, var(--m-lt), var(--m) 72%); box-shadow: inset 0 0 0 1px var(--m-dk); }
.sorter__stack.is-empty::before, .sorter__pile[data-top="0"]::after { display: none; }
.sorter__got, .sorter__rate { position: relative; z-index: 1; justify-self: center; align-self: start; margin: 8px 4px 0; padding: 4px 8px; border-radius: 6px; background: var(--plate); color: var(--plate-ink); font-size: .95rem; line-height: 1.25; text-align: center; box-shadow: var(--p-enamel), 0 1px 0 rgba(0, 0, 0, .4); }
.sorter__got { grid-row: 3; }
.sorter__got b { font: 700 1.15rem/1 var(--board-font); font-variant-numeric: tabular-nums; }
.sorter__bl { display: block; margin-bottom: 2px; font: 700 .98rem/1.15 var(--board-font); letter-spacing: .03em; }
.sorter__paid .sorter__bl { margin: 6px 0 0; font-size: 1.05rem; color: var(--ink); }
.sorter__rate { grid-row: 4; box-shadow: inset 0 0 0 2px var(--m-dk), var(--p-enamel), 0 1px 0 rgba(0, 0, 0, .4); }
.sorter__rate b { display: block; font: 700 1.5rem/1 var(--board-font); }
.sorter__cup { grid-row: 5; position: relative; z-index: 1; margin: 0 10px 10px; }
.sorter__cup .sorter__stack { left: 50%; right: auto; z-index: 4; width: var(--tw); bottom: 7px; transform: translateX(-50%); }
.sorter__cup::after { left: 50%; right: auto; top: auto; bottom: 0; width: calc(var(--tw) + 26px); height: 14px; transform: translateX(-50%); }
.sorter__paid { grid-row: 6; position: relative; margin: 10px 0 0; text-align: center; color: var(--ink); }
.sorter__ch:not([data-ch="4"]) .sorter__paid::after { content: "+"; position: absolute; right: -6px; top: 0; transform: translateX(50%); font: 700 1.35rem/1 var(--board-font); color: var(--ink-2); }
.sorter__ch[data-ch="3"] .sorter__paid::after { content: "="; }
.sorter__paid b { font: 700 1.35rem/1 var(--board-font); font-variant-numeric: tabular-nums; }
.sorter b { white-space: nowrap; }

/* The PIA, piled on a plinth. */
.sorter__sum { grid-row: 2 / 6; position: relative; }
.sorter__pile { position: absolute; left: 50%; bottom: 22px; width: calc(var(--tw) + 12px); transform: translateX(-50%); display: flex; flex-direction: column-reverse; }
.sorter__seg { position: relative; display: block; height: calc(var(--v) * var(--S)); }
.sorter__seg[data-seg="1"] { border-radius: 0 0 50% 50% / 0 0 5px 5px; }
.sorter__plinth { position: absolute; left: 50%; bottom: 0; width: min(100%, calc(var(--tw) + 56px)); height: 24px; transform: translateX(-50%); border-radius: 4px; background: linear-gradient(#3a3f46, #1b1e22); box-shadow: inset 0 2px 0 rgba(255, 255, 255, .18), 0 8px 12px -6px rgba(0, 0, 0, .5); }
.sorter__plinth::before { left: 6px; right: 6px; top: -8px; height: 14px; z-index: 0; }
.sorter__paid--sum b { display: block; font-size: 1.9rem; }
.sorter__per { display: block; margin-top: 4px; font-size: .95rem; line-height: 1.3; color: var(--ink-2); }

/* Falling coins: tilted discs with a thickness, wobbling in depth. */
.sorter__drop { position: absolute; left: 50%; top: 0; z-index: 1; width: calc(var(--tw) - 12px); aspect-ratio: 1; margin-left: calc(var(--tw) / -2 + 6px); border-radius: 50%; transform-style: preserve-3d; background: radial-gradient(circle at 38% 34%, var(--m-lt), var(--m) 58%, var(--m-dk)); box-shadow: inset 0 0 0 2px var(--m-dk); pointer-events: none; }
.sorter__drop::before { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--m-dk); transform: translateZ(-4px); }

.sorter__lever { margin-top: 16px; }
.js .sorter .sorter__lever { display: block; }
.sorter__lk { display: block; font-size: 1rem; line-height: 1.35; color: var(--ink-2); }
.sorter__ends { display: flex; justify-content: space-between; margin-top: -6px; font: 700 .95rem/1 var(--board-font); color: var(--ink-2); }
.sorter__say { margin: 18px 0 0; font-size: 1.06rem; line-height: 1.5; color: var(--ink); }

@media (max-width: 599px) {
	.sorter { --H: 168px; --C: 64px; --S: calc(var(--H) - 24px); --tw: 34px; }
	.sorter__machine { column-gap: 8px; grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.12fr); }
	.sorter__feed { padding-left: 0; gap: 10px; }
	.sorter__ch .sorter__paid::after { display: none; }
	.sorter__hopper { width: 74px; }
	.sorter__in { margin-bottom: 30px; padding: 7px 10px 8px; }
	.sorter__in b { font-size: 1.85rem; }
	.sorter__bay { margin-inline: 3px; }
	.sorter__got, .sorter__rate { margin-inline: 0; padding: 3px; font-size: .94rem; }
	.sorter__got b, .sorter__paid b { font-size: 1.03rem; }
	.sorter__rate b { font-size: 1.3rem; }
	.sorter__cup { margin-inline: 2px; }
	.sorter__paid--sum b { font-size: 1.28rem; }
}
@media (max-width: 359px) {
	.sorter__machine { column-gap: 5px; grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.1fr); }
	.sorter__paid b { font-size: .94rem; }
	.sorter__paid--sum b { font-size: 1.04rem; }
}
@media (prefers-reduced-motion: reduce) {
	.sorter__hopper { transition: none; }
}
@media (prefers-color-scheme: dark) {
	.sorter .p-range::-webkit-slider-thumb { background: var(--signal); border-color: #000; }
	.sorter .p-range::-moz-range-thumb { background: var(--signal); border-color: #000; }
}