/**
 * Round 3 — pen picture, quiet rails, Mix & Match box builder.
 *
 * Built entirely on Round 2's tokens (--accent, --surface, --line, --r-*, --s*)
 * so the new surfaces read as the same pharma-clean dark system rather than a
 * second design. Motion is restraint-and-speed: short durations, one property,
 * no cinematic entrances, and nothing moves at all under reduced motion.
 */

/* --- shared ---------------------------------------------------------------- */

.screen-reader-text {
	position: absolute !important;
	width: 1px; height: 1px;
	margin: -1px; padding: 0; border: 0;
	overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
	white-space: nowrap;
}

/* --- R7/R8 (Round 4): the quiet rails ------------------------------------- */

/* Round 3 kept a skip-link-style pause button here. Round 4 removes it: Naem
   asked for no corner control at all, and a focus-revealed button is still a
   visible button the moment a keyboard user reaches the rail. The pause
   mechanism now lives in assets/js/pharma-rail.js, which stops the motion as
   soon as focus enters the rail region. Nothing to style. */
.pharma-rail.is-quiet { padding-top: 2px; }

/* --- R1/R2: the $349 pen picture ------------------------------------------ */

.promo-figure { align-content: center; }
.promo-media {
	margin: 0 0 var(--s4);
	width: min(100%, 420px);
	justify-self: end;
	border: 1px solid var(--line);
	border-radius: var(--r-md);
	background: var(--surface-raised);
	overflow: hidden;
}
.promo-media.has-image { line-height: 0; }
.promo-media-img {
	display: block;
	width: 100%;
	height: auto;
	max-width: 100%;
	object-fit: cover;
}
.promo-media.is-empty {
	display: grid;
	place-items: center;
	aspect-ratio: 4 / 3;
	border-style: dashed;
	border-color: var(--line-strong);
	color: var(--quiet);
}
.promo-media-frame svg { width: 48px; height: 40px; }

/* --- R8–R12: the Mix & Match builder --------------------------------------- */

.mixbox-section .sec-head { margin-bottom: var(--s5); }

.mixbox {
	border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
	border-radius: var(--r-lg);
	background:
		radial-gradient(70% 120% at 0% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 62%),
		var(--surface);
	padding: clamp(20px, 2.6vw, 36px);
}

.mixbox-sizes { display: flex; flex-wrap: wrap; gap: var(--s3); margin-bottom: var(--s5); }
.mixbox-size {
	display: grid;
	gap: 2px;
	padding: 12px 20px;
	min-height: 56px;
	border: 1px solid var(--line-strong);
	border-radius: var(--r-md);
	background: var(--surface-raised);
	color: var(--text);
	font: inherit;
	text-align: left;
	cursor: pointer;
	transition: border-color .14s var(--ease), background-color .14s var(--ease);
}
.mixbox-size:hover { border-color: var(--accent); }
.mixbox-size:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }
.mixbox-size.is-selected {
	border-color: var(--accent);
	background: color-mix(in srgb, var(--accent) 12%, var(--surface-raised));
}
.mixbox-size .ms-n { font-weight: 600; font-size: 15px; }
.mixbox-size .ms-off { color: var(--accent-text); font-size: 13px; font-weight: 600; letter-spacing: .02em; }

.mixbox-grid {
	display: grid;
	grid-template-columns: minmax(0, 1.55fr) minmax(300px, .95fr);
	gap: clamp(20px, 2.6vw, 40px);
	align-items: start;
}

.mixbox-picker-head { display: grid; gap: 4px; margin-bottom: var(--s4); }
.mixbox-picker-head b { font-size: 15px; }
.mixbox-picker-head span { color: var(--muted); font-size: 13px; }

.mixbox-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s2); }
.mixbox-row {
	display: grid;
	grid-template-columns: 56px minmax(0, 1fr) auto;
	align-items: center;
	gap: var(--s3);
	padding: 10px 12px;
	border: 1px solid var(--line);
	border-radius: var(--r-md);
	background: var(--void);
	transition: border-color .14s var(--ease);
}
.mixbox-row.is-chosen { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.mr-shot { display: block; width: 56px; height: 56px; border-radius: var(--r-sm); overflow: hidden; background: var(--surface-raised); }
.mr-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.mr-meta { display: grid; gap: 2px; min-width: 0; }
.mr-name { color: var(--text); font-weight: 600; font-size: 14px; text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mr-name:hover { color: var(--accent-text); }
.mr-price { color: var(--muted); font-size: 13px; }
.mr-stock { font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--quiet); }
.mr-stock.in { color: var(--ok); }
.mr-stock.low { color: var(--warn); }
.mr-stock.out { color: var(--quiet); }

.mr-step { display: flex; align-items: center; gap: 6px; }
.mr-btn {
	width: 44px; height: 44px;
	border: 1px solid var(--line-strong);
	border-radius: var(--r-sm);
	background: var(--surface-raised);
	color: var(--text);
	font-size: 18px; line-height: 1;
	cursor: pointer;
	transition: border-color .14s var(--ease), opacity .14s var(--ease);
}
.mr-btn:hover:not(:disabled) { border-color: var(--accent); }
.mr-btn:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }
.mr-btn:disabled { opacity: .38; cursor: not-allowed; }
.mr-qty {
	width: 58px; height: 44px;
	padding: 0 6px;
	border: 1px solid var(--line-strong);
	border-radius: var(--r-sm);
	background: var(--void);
	color: var(--text);
	font: inherit; font-weight: 600;
	text-align: center;
	-moz-appearance: textfield;
}
.mr-qty::-webkit-outer-spin-button, .mr-qty::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* the box, assembling */
.mixbox-summary {
	position: sticky;
	top: calc(var(--nav-h) + 16px);
	display: grid;
	gap: var(--s3);
	padding: var(--s5);
	border: 1px solid var(--line-strong);
	border-radius: var(--r-md);
	background: var(--surface-raised);
}
.mixbox-slots { display: flex; flex-wrap: wrap; gap: 6px; }
.mixbox-slot {
	width: 22px; height: 30px;
	border: 1px solid var(--line-strong);
	border-radius: 4px 4px 7px 7px;
	background: transparent;
	transition: background-color .16s var(--ease), border-color .16s var(--ease), transform .16s var(--ease);
}
.mixbox-slot.is-filled {
	border-color: var(--accent);
	background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 26%, transparent), color-mix(in srgb, var(--accent) 62%, transparent));
	transform: translateY(-1px);
}
.mixbox-count { display: grid; gap: 2px; margin: 0; }
.mixbox-count b { font-size: 16px; }
.mixbox-count span { color: var(--muted); font-size: 13px; }

.mixbox-chosen { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; max-height: 232px; overflow-y: auto; }
.mixbox-chip {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto auto;
	align-items: center;
	gap: var(--s2);
	padding: 8px 10px;
	border: 1px solid var(--line);
	border-radius: var(--r-sm);
	background: var(--void);
	font-size: 13px;
}
.mixbox-chip.is-empty { color: var(--quiet); grid-template-columns: 1fr; }
.mc-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mc-value { color: var(--muted); font-variant-numeric: tabular-nums; }
.mc-drop {
	width: 28px; height: 28px;
	border: 1px solid var(--line-strong);
	border-radius: var(--r-sm);
	background: transparent;
	color: var(--muted);
	cursor: pointer;
	line-height: 1;
}
.mc-drop:hover { color: var(--text); border-color: var(--accent); }
.mc-drop:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }

.mixbox-sums { display: grid; gap: 6px; margin: 0; padding-top: var(--s3); border-top: 1px solid var(--line); }
.mixbox-sums > div { display: flex; align-items: baseline; justify-content: space-between; gap: var(--s3); }
.mixbox-sums dt { color: var(--muted); font-size: 13px; margin: 0; }
.mixbox-sums dd { margin: 0; font-variant-numeric: tabular-nums; font-size: 14px; }
.mixbox-sums .is-off dt, .mixbox-sums .is-off dd { color: var(--accent-text); font-weight: 600; }
.mixbox-sums .is-total { padding-top: 6px; border-top: 1px solid var(--line); }
.mixbox-sums .is-total dt { color: var(--text); font-size: 14px; font-weight: 600; }
.mixbox-sums .is-total dd { font-size: 22px; font-weight: 600; letter-spacing: -.02em; }

.mixbox-mode {
	margin: 0;
	padding: 10px 12px;
	border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
	border-radius: var(--r-sm);
	background: color-mix(in srgb, var(--accent) 9%, transparent);
	color: var(--text);
	font-size: 12.5px;
	line-height: 1.5;
}

.mixbox-actions { display: grid; gap: var(--s2); }
.mixbox-add { width: 100%; min-height: 52px; font-variant-numeric: tabular-nums; }
.mixbox-add:disabled { opacity: .45; cursor: not-allowed; }
.mixbox-clear { width: 100%; min-height: 44px; }
.mixbox-note { margin: 0; color: var(--quiet); font-size: 12px; line-height: 1.55; }

/* --- the box in the cart ---------------------------------------------------- */

.p3-box-tag {
	display: inline-block;
	margin-top: 4px;
	padding: 2px 8px;
	border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
	border-radius: var(--r-pill);
	color: var(--accent-text);
	font-size: 11px;
	font-weight: 600;
	letter-spacing: .03em;
	white-space: nowrap;
}
.p3-box-qty { font-weight: 600; font-variant-numeric: tabular-nums; }
.p3-box-unit { display: inline-grid; gap: 1px; }
.p3-box-unit del { color: var(--quiet); }
.p3-box-unit-note { color: var(--accent-text); font-size: 11px; letter-spacing: .03em; }
.p3-box-audit {
	display: grid;
	gap: 4px;
	margin-top: var(--s2);
	padding: 10px 12px;
	border: 1px solid var(--line);
	border-left: 2px solid var(--accent);
	border-radius: var(--r-sm);
	background: var(--surface-raised);
	font-size: 12.5px;
	line-height: 1.55;
}
.p3-box-human { color: var(--muted); }
.p3-box-sums { color: var(--text); font-variant-numeric: tabular-nums; }
.p3-box-mode { color: var(--accent-text); }

/* --- mobile ---------------------------------------------------------------- */

@media (max-width: 980px) {
	.mixbox-grid { grid-template-columns: minmax(0, 1fr); }
	.mixbox-summary { position: static; }
}

@media (max-width: 680px) {
	.mixbox { padding: var(--s4); }
	.promo-media { justify-self: start; width: 100%; }
	.mixbox-row { grid-template-columns: 48px minmax(0, 1fr); grid-template-areas: "shot meta" "step step"; row-gap: 10px; }
	.mr-shot { grid-area: shot; width: 48px; height: 48px; }
	.mr-meta { grid-area: meta; }
	.mr-step { grid-area: step; justify-content: space-between; }
	.mr-qty { flex: 1; max-width: 96px; }
	.mixbox-summary { padding: var(--s4); }
	.mixbox-chosen { max-height: 176px; }
}

@media (prefers-reduced-motion: reduce) {
	.mixbox-slot, .mixbox-size, .mixbox-row, .mr-btn { transition: none !important; }
}