/* =================================================================
   STORY ZONE EDITOR
   The Deck Builder's authoring surface for Story Zone stories.

   Namespaced .sze-* and scoped under .sze, so the editor can look
   like the student's screen without inheriting or leaking Deck
   Builder styling. Shares the Teacher's Plan editor's palette on
   purpose — the two are siblings.

   Type scales from ONE number — --sze-fs. The A A A control in the
   toolbar changes it, and every size in here is an em.
   ================================================================= */

.sze {
    --sze-fs: 1;
    font-size: calc(16px * var(--sze-fs));

    --sze-panel: #FFFFFF;
    --sze-panel-2: #F5F6FA;
    --sze-panel-3: #EDEFF5;
    --sze-rule: #E4E6EF;
    --sze-rule-soft: #EFF1F7;
    --sze-ink: #14161F;
    --sze-ink-soft: #565C70;
    --sze-ink-faint: #7F8598;

    --sze-accent: #4F46E5;   --sze-accent-wash: #EEEDFD;
    --sze-student: #0D8A80;  --sze-student-wash: #E1F4F1;
    --sze-ok: #0E6E47;       --sze-ok-wash: #E2F5EA;
    --sze-warn: #A8500A;     --sze-warn-wash: #FDF2E2;
    --sze-danger: #C81E1E;   --sze-danger-wash: #FDEBEB;

    --sze-shadow: 0 1px 2px rgba(20, 22, 31, .05), 0 14px 38px -14px rgba(20, 22, 31, .2);
    --sze-shadow-sm: 0 1px 2px rgba(20, 22, 31, .07);

    display: flex;
    flex-direction: column;
    min-height: 0;
    position: relative;
    background: var(--sze-panel);
    color: var(--sze-ink);
    border: 1px solid var(--sze-rule);
    border-radius: 12px;
    overflow: hidden;
}

.sze[data-fs="large"]  { --sze-fs: 1.13; }
.sze[data-fs="xlarge"] { --sze-fs: 1.28; }

[data-theme="dark"] .sze {
    --sze-panel: #171A21;
    --sze-panel-2: #1E222B;
    --sze-panel-3: #262B35;
    --sze-rule: #2E3441;
    --sze-rule-soft: #242933;
    --sze-ink: #F2F4F9;
    --sze-ink-soft: #A7AEC0;
    --sze-ink-faint: #7A8194;

    --sze-accent: #9A93F7;   --sze-accent-wash: #272150;
    --sze-student: #4BD3C2;  --sze-student-wash: #0E3B36;
    --sze-ok: #5AD497;       --sze-ok-wash: #123522;
    --sze-warn: #EDAD57;     --sze-warn-wash: #3D2C13;
    --sze-danger: #FA8484;   --sze-danger-wash: #3D1919;

    --sze-shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 14px 38px -14px rgba(0, 0, 0, .65);
    --sze-shadow-sm: 0 1px 2px rgba(0, 0, 0, .35);
}

.sze * { box-sizing: border-box; }
.sze p { max-width: none; margin: 0 0 .6em; }
.sze p:last-child { margin-bottom: 0; }
.sze button, .sze input, .sze select { font: inherit; color: inherit; }
.sze code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .86em; background: var(--sze-panel-2);
    border: 1px solid var(--sze-rule); padding: 1px 5px; border-radius: 4px;
}
.sze-fatal { padding: 24px; color: #C81E1E; font-weight: 600; }
.sze-sp { flex: 1 1 auto; }
.sze-faint { color: var(--sze-ink-faint); }
.sze-warntext { color: var(--sze-warn); }
.sze-empty { padding: 3em 1.5em; text-align: center; color: var(--sze-ink-soft); }
.sze :is(button, input, select, [tabindex]):focus-visible {
    outline: 2px solid var(--sze-accent); outline-offset: 2px;
}

/* ---------- toolbar ---------- */
.sze-bar {
    flex: 0 0 auto; display: flex; align-items: center; gap: .6em; flex-wrap: wrap;
    padding: .6em 1em; border-bottom: 1px solid var(--sze-rule); background: var(--sze-panel-2);
}
.sze-crumb { font-size: .8em; font-weight: 650; color: var(--sze-ink-soft); }
.sze-crumb b { color: var(--sze-ink); }
.sze-dirty {
    font-size: .66em; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
    color: var(--sze-warn); background: var(--sze-warn-wash); border-radius: 999px; padding: .3em .75em;
}

.sze-btn {
    font-size: .8em; font-weight: 650; min-height: 2.2em; padding: .3em .85em;
    border: 1px solid var(--sze-rule); border-radius: .5em; background: var(--sze-panel);
    color: var(--sze-ink); cursor: pointer; display: inline-flex; align-items: center; gap: .4em;
    white-space: nowrap;
}
.sze-btn:hover { border-color: var(--sze-ink-faint); }
.sze-btn:disabled { opacity: .45; cursor: not-allowed; }
.sze-btn-primary { background: var(--sze-accent); border-color: var(--sze-accent); color: #fff; }
.sze-btn-primary:hover { filter: brightness(1.08); border-color: var(--sze-accent); }
.sze-btn-sm { font-size: .72em; min-height: 1.9em; padding: .2em .6em; }
.sze-btn-add { border-style: dashed; color: var(--sze-accent); border-color: var(--sze-accent); }
.sze-btn-add:hover { background: var(--sze-accent-wash); border-color: var(--sze-accent); }
.sze-btn-danger:hover {
    border-color: var(--sze-danger); color: var(--sze-danger); background: var(--sze-danger-wash);
}

.sze-seg {
    display: flex; background: var(--sze-panel); border: 1px solid var(--sze-rule);
    border-radius: .55em; padding: 2px; gap: 2px; flex: 0 0 auto;
}
.sze-seg button {
    font-size: .8em; font-weight: 700; min-height: 2.1em; padding: .3em .9em; border: 0;
    border-radius: .45em; cursor: pointer; background: transparent; color: var(--sze-ink-soft);
    display: inline-flex; align-items: center; gap: .4em; white-space: nowrap;
}
.sze-seg button:hover { background: var(--sze-panel-3); color: var(--sze-ink); }
.sze-seg button[aria-selected="true"],
.sze-seg button[aria-selected="true"]:hover { background: var(--sze-accent); color: #fff; }

.sze-fs {
    display: flex; align-items: center; gap: .25em; padding: 2px;
    border: 1px solid var(--sze-rule); border-radius: .55em; background: var(--sze-panel);
}
.sze-fs button {
    font-weight: 700; border: 0; background: transparent; color: var(--sze-ink-soft);
    cursor: pointer; border-radius: .4em; padding: .18em .55em; line-height: 1;
}
.sze-fs button:hover { background: var(--sze-panel-2); color: var(--sze-ink); }
.sze-fs button[aria-pressed="true"] { background: var(--sze-accent); color: #fff; }
.sze-fs .sze-a1 { font-size: .72em; }
.sze-fs .sze-a2 { font-size: .86em; }
.sze-fs .sze-a3 { font-size: 1em; }

/* ---------- body split ---------- */
.sze-body { flex: 1 1 auto; display: flex; min-height: 0; align-items: stretch; }
.sze-main {
    flex: 1 1 auto; min-width: 0; overflow-y: auto;
    max-height: min(78vh, 860px); background: var(--sze-panel);
}
.sze-side {
    flex: 0 0 clamp(300px, 24vw, 380px); border-left: 1px solid var(--sze-rule);
    background: var(--sze-panel-2); display: flex; flex-direction: column;
    max-height: min(78vh, 860px);
}

/* ---------- numbered sections ---------- */
.sze-sec { border-bottom: 1px solid var(--sze-rule); }
.sze-sec:last-child { border-bottom: 0; }
.sze-sec-head {
    display: flex; align-items: center; gap: .6em; flex-wrap: wrap; padding: .8em 1.2em .15em;
}
.sze-sec-n {
    flex: 0 0 auto; width: 1.7em; height: 1.7em; border-radius: .45em; display: grid;
    place-items: center; background: var(--sze-accent-wash); color: var(--sze-accent);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .8em; font-weight: 700;
}
.sze-sec-t {
    font-size: .72em; font-weight: 700; letter-spacing: .11em; text-transform: uppercase;
    color: var(--sze-ink-faint);
}
.sze-sec-sub { font-size: .76em; color: var(--sze-ink-faint); min-width: 0; }
.sze-sec-body { padding: .75em 1.2em 1.15em; }
.sze-sec-dim .sze-sec-body { opacity: .5; }

/* ---------- fields ---------- */
.sze-row { display: flex; gap: .7em; flex-wrap: wrap; align-items: flex-end; }
.sze-row-forms { margin-top: .9em; align-items: flex-start; }
.sze-field { display: flex; flex-direction: column; gap: .25em; min-width: 0; }
.sze-field > label {
    font-size: .68em; font-weight: 700; letter-spacing: .09em;
    text-transform: uppercase; color: var(--sze-ink-faint);
}
.sze-in {
    border: 1px solid var(--sze-rule); border-radius: .45em; background: var(--sze-panel);
    color: var(--sze-ink); padding: .4em .6em; font-size: .88em; min-height: 2.2em; min-width: 0;
}
.sze-in:focus {
    border-color: var(--sze-accent); outline: none;
    box-shadow: 0 0 0 3px var(--sze-accent-wash);
}
.sze-in::placeholder { color: var(--sze-ink-faint); }
.sze-in-title { font-size: 1.02em; font-weight: 600; }
.sze-in-code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .84em; letter-spacing: .02em;
}
.sze-hint { font-size: .72em; color: var(--sze-ink-faint); margin-top: .3em; line-height: 1.45; }
.sze-hint b { color: var(--sze-ink-soft); }

/* ---------- form chips ---------- */
.sze-forms { display: flex; flex-wrap: wrap; gap: .4em; align-items: center; }
.sze-fchip {
    display: inline-flex; align-items: center; gap: .4em; border: 1px solid var(--sze-rule);
    border-radius: .5em; background: var(--sze-panel); padding: .3em .35em .3em .6em; cursor: pointer;
}
.sze-fchip:hover { border-color: var(--sze-accent); }
.sze-fchip[aria-current="true"] {
    border-color: var(--sze-accent); box-shadow: 0 0 0 2px var(--sze-accent-wash);
}
.sze-fchip .code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .82em; font-weight: 700;
}
.sze-fchip .nm { font-size: .75em; color: var(--sze-ink-soft); }
.sze-fchip .ct {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .7em; font-weight: 700; border-radius: 999px; padding: .1em .5em;
    background: var(--sze-ok-wash); color: var(--sze-ok);
}
.sze-fchip .ct.zero { background: var(--sze-danger-wash); color: var(--sze-danger); }
.sze-fchip .ct.na { background: var(--sze-panel-3); color: var(--sze-ink-faint); }
.sze-fchip .x {
    border: 0; background: transparent; color: var(--sze-ink-faint); cursor: pointer;
    font-size: 1em; line-height: 1; padding: .1em .3em; border-radius: .3em;
}
.sze-fchip .x:hover { background: var(--sze-danger-wash); color: var(--sze-danger); }

.sze-fedit {
    display: flex; flex-wrap: wrap; gap: .6em; align-items: flex-end; margin-top: .8em;
    border: 1px solid var(--sze-accent); border-radius: .55em;
    background: var(--sze-accent-wash); padding: .7em .85em;
}
.sze-fedit .sze-in { background: var(--sze-panel); }
.sze-fedit-note { flex: 1 1 100%; font-size: .78em; color: var(--sze-ink-soft); margin: 0; }

/* ---------- sentence list ---------- */
.sze-slist { display: flex; flex-direction: column; gap: .35em; }
.sze-srow {
    display: flex; align-items: flex-start; gap: .6em; border: 1px solid var(--sze-rule);
    border-radius: .55em; background: var(--sze-panel); padding: .5em .6em; cursor: pointer;
}
.sze-srow:hover { border-color: var(--sze-ink-faint); }
.sze-srow[aria-current="true"] {
    border-color: var(--sze-accent); box-shadow: 0 0 0 2px var(--sze-accent-wash);
}
.sze-srow-missing { border-style: dashed; border-color: var(--sze-danger); cursor: default; }
.sze-srow .pos {
    flex: 0 0 1.7em; height: 1.7em; border-radius: .4em; background: var(--sze-panel-3);
    color: var(--sze-ink-soft);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .78em; font-weight: 700; display: grid; place-items: center;
}
.sze-srow[aria-current="true"] .pos { background: var(--sze-accent); color: #fff; }
.sze-srow .body { flex: 1 1 auto; min-width: 0; }
.sze-srow .txt { display: block; font-size: .92em; font-weight: 600; line-height: 1.35; }
.sze-srow .en { display: block; font-size: .8em; color: var(--sze-ink-soft); }
.sze-srow .meta { display: flex; flex-wrap: wrap; gap: .35em; margin-top: .3em; }
.sze-srow .tools { display: flex; gap: .15em; flex: 0 0 auto; }

.sze-ic {
    border: 1px solid transparent; background: transparent; color: var(--sze-ink-faint);
    cursor: pointer; width: 1.9em; height: 1.9em; border-radius: .4em;
    display: grid; place-items: center; font-size: .85em;
}
.sze-ic:hover { background: var(--sze-panel-3); color: var(--sze-ink); }
.sze-ic:disabled { opacity: .35; cursor: not-allowed; }
.sze-ic.del:hover {
    background: var(--sze-danger-wash); color: var(--sze-danger); border-color: var(--sze-danger);
}

.sze-tag {
    font-size: .68em; font-weight: 700; padding: .18em .55em; border-radius: 999px;
    background: var(--sze-panel-3); color: var(--sze-ink-soft); white-space: nowrap;
    display: inline-flex; align-items: center; gap: .35em;
}
.sze-tag.ok { background: var(--sze-ok-wash); color: var(--sze-ok); }
.sze-tag.warn { background: var(--sze-warn-wash); color: var(--sze-warn); }
.sze-tag.bad { background: var(--sze-danger-wash); color: var(--sze-danger); }
.sze-tag.stu { background: var(--sze-student-wash); color: var(--sze-student); }

.sze-newsent {
    display: flex; gap: .5em; align-items: flex-end; flex-wrap: wrap; margin-top: .8em;
    border: 1px dashed var(--sze-accent); border-radius: .55em;
    background: var(--sze-accent-wash); padding: .7em .8em;
}
.sze-newsent .sze-field { flex: 1 1 260px; }
.sze-newsent .sze-in { background: var(--sze-panel); }

.sze-edit {
    display: flex; flex-direction: column; gap: .5em; border: 1px solid var(--sze-accent);
    border-radius: .55em; background: var(--sze-accent-wash); padding: .75em .85em;
}
.sze-edit .sze-in { background: var(--sze-panel); }
.sze-edit-actions { display: flex; gap: .45em; align-items: center; flex-wrap: wrap; }
.sze-shared {
    font-size: .78em; color: var(--sze-warn); background: var(--sze-warn-wash);
    border: 1px solid var(--sze-warn); border-radius: .45em; padding: .5em .65em; margin: 0;
}

/* ---------- word ↔ card pairs ---------- */
.sze-pairs { display: flex; flex-wrap: wrap; gap: .5em; }
.sze-pair {
    width: 106px; border: 1px solid var(--sze-rule); border-radius: .55em; background: var(--sze-panel);
    padding: .45em .35em .5em; display: flex; flex-direction: column; align-items: center;
    gap: .3em; cursor: pointer; position: relative; text-align: center;
}
.sze-pair:hover { border-color: var(--sze-accent); box-shadow: var(--sze-shadow-sm); }
.sze-pair[aria-current="true"] {
    border-color: var(--sze-accent); box-shadow: 0 0 0 2px var(--sze-accent-wash);
}
.sze-pair .w { font-size: .82em; font-weight: 650; line-height: 1.2; word-break: break-word; }
.sze-pair .cd {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .64em; color: var(--sze-ink-faint); line-height: 1.35;
}
.sze-pair .cd b { color: var(--sze-ink-soft); }

.sze-thumb {
    width: 76px; height: 76px; border-radius: .4em; overflow: hidden;
    background: var(--sze-panel-3); display: grid; place-items: center;
}
.sze-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sze-thumb.txt {
    font-size: .62em; color: var(--sze-ink-soft); padding: .3em; line-height: 1.25;
}
.sze-thumb.txt em { opacity: .7; font-style: normal; }
.sze-thumb.empty {
    border: 1px dashed var(--sze-rule); background: transparent; color: var(--sze-ink-faint);
    font-size: .62em; padding: .3em; line-height: 1.3;
}

.sze-state {
    position: absolute; top: .35em; right: .35em; width: .62em; height: .62em; border-radius: 50%;
    background: var(--sze-ok); box-shadow: 0 0 0 2px var(--sze-panel);
}
/* Tones, not kinds — CardResolver.KIND_INFO maps the seven provenance
   kinds onto these four so the legend stays readable; the precise kind
   is in each pair's tooltip. */
.sze-state.ok { background: var(--sze-ok); }
.sze-state.stem { background: var(--sze-student); }
.sze-state.num { background: var(--sze-warn); }
.sze-state.none { background: transparent; border: 2px solid var(--sze-ink-faint); box-shadow: none; }

.sze-ribbon {
    display: flex; align-items: center; gap: .5em; flex-wrap: wrap; margin-bottom: .8em;
    border: 1px solid var(--sze-warn); border-left-width: 3px; background: var(--sze-warn-wash);
    border-radius: .5em; padding: .55em .75em; font-size: .8em; color: var(--sze-warn);
}

.sze-legend {
    display: flex; flex-wrap: wrap; gap: .9em; font-size: .72em;
    color: var(--sze-ink-soft); margin-top: .8em; align-items: center;
}
.sze-legend i {
    width: .62em; height: .62em; border-radius: 50%; display: inline-block;
    margin-right: .35em; vertical-align: middle;
}
.sze-legend .sze-d-ok { background: var(--sze-ok); }
.sze-legend .sze-d-stem { background: var(--sze-student); }
.sze-legend .sze-d-num { background: var(--sze-warn); }
.sze-legend .sze-d-none { background: transparent; border: 2px solid var(--sze-ink-faint); }

/* ---------- card picker ---------- */
.sze-picker {
    position: absolute; inset: 0; background: rgba(20, 22, 31, .45);
    display: grid; place-items: center; padding: 2em; z-index: 30;
}
.sze-picker-box {
    width: min(720px, 94%); max-height: 82%; display: flex; flex-direction: column;
    background: var(--sze-panel); border: 1px solid var(--sze-rule); border-radius: .8em;
    box-shadow: var(--sze-shadow); overflow: hidden;
}
.sze-picker-head {
    display: flex; align-items: center; gap: .6em; padding: .7em .9em; flex-wrap: wrap;
    border-bottom: 1px solid var(--sze-rule); background: var(--sze-panel-2);
}
.sze-picker-head b { font-size: .9em; }
.sze-picker-head .sze-in { flex: 1 1 180px; }
.sze-picker-body { overflow-y: auto; padding: .85em .9em 1em; }
.sze-cards {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: .5em;
}
.sze-card {
    border: 1px solid var(--sze-rule); border-radius: .5em; background: var(--sze-panel);
    padding: .4em .3em .45em; cursor: pointer; display: flex; flex-direction: column;
    align-items: center; gap: .22em; text-align: center;
}
.sze-card:hover { border-color: var(--sze-accent); box-shadow: var(--sze-shadow-sm); }
.sze-card[aria-current="true"] { border-color: var(--sze-accent); background: var(--sze-accent-wash); }
.sze-card .cw { font-size: .78em; font-weight: 650; line-height: 1.2; }
.sze-card .ce { font-size: .66em; color: var(--sze-ink-faint); line-height: 1.2; }
.sze-card .cn {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .62em; color: var(--sze-ink-faint);
}

/* ---------- preview ---------- */
.sze-side-title {
    flex: 0 0 auto; font-size: .68em; font-weight: 700; letter-spacing: .1em;
    text-transform: uppercase; color: var(--sze-ink-faint);
    padding: .85em 1em .5em; display: flex; align-items: center; gap: .5em; flex-wrap: wrap;
}
.sze-ftabs { flex: 0 0 auto; display: flex; flex-wrap: wrap; gap: .25em; padding: 0 .85em .6em; }
.sze-ft {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .7em; font-weight: 700; padding: .3em .55em; border-radius: .35em;
    border: 1px solid var(--sze-rule); background: var(--sze-panel); color: var(--sze-ink-soft);
    cursor: pointer; position: relative;
}
.sze-ft:hover { border-color: var(--sze-student); }
.sze-ft[aria-selected="true"] {
    background: var(--sze-student); border-color: var(--sze-student); color: #fff;
}
.sze-ft.zero::after {
    content: ''; position: absolute; top: -3px; right: -3px; width: 7px; height: 7px;
    border-radius: 50%; background: var(--sze-warn); box-shadow: 0 0 0 2px var(--sze-panel-2);
}
.sze-side-scroll { flex: 1 1 auto; overflow-y: auto; padding: 0 .9em 1.2em; }

.sze-device {
    border: 1px solid var(--sze-rule); border-radius: 12px; background: var(--sze-panel);
    overflow: hidden; box-shadow: var(--sze-shadow-sm);
}
.sze-dev-top {
    padding: .5em .8em; background: var(--sze-student); color: #fff;
    display: flex; flex-direction: column; gap: .05em;
}
.sze-dev-top span { font-size: .64em; letter-spacing: .09em; text-transform: uppercase; opacity: .85; }
.sze-dev-top b { font-size: .85em; }
.sze-dev-body { padding: .8em .65em; }
.sze-sz {
    border: 1px solid var(--sze-rule); border-radius: .6em; padding: .6em .5em;
    background: var(--sze-panel-2); display: flex; flex-direction: column; gap: .5em;
}
.sze-sz-row { display: flex; flex-wrap: wrap; gap: .32em; align-items: flex-start; }
.sze-sz-card { width: 58px; display: flex; flex-direction: column; align-items: center; gap: .18em; }
.sze-sz-pic {
    width: 58px; height: 58px; border-radius: .35em; overflow: hidden;
    background: var(--sze-panel-3); display: grid; place-items: center;
    border: 1px solid var(--sze-rule);
}
.sze-sz-pic img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sze-sz-pic.txt { font-size: .56em; color: var(--sze-ink-faint); text-align: center; padding: .2em; line-height: 1.2; }
.sze-sz-pic.blank {
    border: 2px dashed var(--sze-student); background: var(--sze-student-wash);
    color: var(--sze-student); font-size: 1.3em; font-weight: 700;
}
.sze-sz-func {
    align-self: center; font-size: .76em; font-weight: 600; color: var(--sze-ink-soft);
    padding: .3em .4em; border-bottom: 2px solid var(--sze-rule);
}
.sze-sz-w {
    font-size: .6em; color: var(--sze-ink-faint); text-align: center;
    line-height: 1.15; word-break: break-word;
}
.sze-sz-tools { display: flex; gap: .35em; align-items: center; flex-wrap: wrap; }
.sze-speak {
    width: 1.8em; height: 1.8em; border-radius: 50%; border: 1px solid var(--sze-rule);
    background: var(--sze-panel); color: var(--sze-student); display: grid; place-items: center;
    font-size: .8em; flex: 0 0 auto;
}
.sze-speak.mute { color: var(--sze-danger); border-color: var(--sze-danger); }

.sze-msg { font-size: .74em; color: var(--sze-ink-soft); margin-top: .7em; line-height: 1.5; }
.sze-msg.warn {
    color: var(--sze-warn); background: var(--sze-warn-wash); border: 1px solid var(--sze-warn);
    border-radius: .45em; padding: .55em .7em;
}
.sze-seedrow {
    display: flex; align-items: center; gap: .45em; flex-wrap: wrap; margin-top: .7em;
    font-size: .74em; color: var(--sze-ink-soft);
}

/* ---------- test setup ---------- */
.sze-test { padding: 1em 1.2em 1.5em; overflow-y: auto; max-height: min(78vh, 860px); }
.sze-testbar {
    display: flex; align-items: flex-end; gap: .7em; flex-wrap: wrap; margin-bottom: 1em;
    border: 1px solid var(--sze-rule); border-radius: .6em; background: var(--sze-panel-2);
    padding: .75em .9em;
}
.sze-mwrap { overflow-x: auto; border: 1px solid var(--sze-rule); border-radius: .6em; }
.sze-matrix { width: 100%; border-collapse: separate; border-spacing: 0; font-size: .85em; }
.sze-matrix th, .sze-matrix td {
    border-bottom: 1px solid var(--sze-rule-soft); padding: .5em .55em; vertical-align: top;
}
.sze-matrix thead th {
    background: var(--sze-panel-2); border-bottom: 1px solid var(--sze-rule);
    text-align: center; min-width: 136px;
}
.sze-matrix thead th.zero { background: var(--sze-warn-wash); }
.sze-matrix thead th:first-child {
    text-align: left; min-width: 260px; vertical-align: middle;
    font-size: .8em; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
    color: var(--sze-ink-faint);
}
.sze-matrix tbody td { text-align: center; vertical-align: middle; }
.sze-matrix tbody td:first-child { text-align: left; }
.sze-matrix tbody tr:hover td { background: var(--sze-panel-2); }
.sze-matrix tbody tr[aria-current="true"] td { background: var(--sze-accent-wash); }
.sze-matrix tbody tr { cursor: pointer; }

.sze-colhead { display: flex; flex-direction: column; gap: .3em; align-items: stretch; }
.sze-colhead .top { display: flex; align-items: center; gap: .3em; }
.sze-colhead .code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .9em; font-weight: 700; flex: 1 1 auto; text-align: left;
}
.sze-colhead select, .sze-colhead input {
    border: 1px solid var(--sze-rule); border-radius: .35em; background: var(--sze-panel);
    color: var(--sze-ink); font-size: .82em; padding: .2em .3em; min-height: 1.9em; width: 100%;
}
.sze-colhead .params { display: flex; gap: .25em; }
.sze-colhead .ct {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .72em; font-weight: 700; border-radius: 999px; padding: .1em .5em;
    background: var(--sze-ok-wash); color: var(--sze-ok);
}
.sze-colhead .ct.zero { background: var(--sze-danger-wash); color: var(--sze-danger); }
.sze-colhead .ct.na { background: var(--sze-panel-3); color: var(--sze-ink-faint); }

.sze-strip { display: inline-flex; gap: 2px; padding: .15em; border-radius: .3em; }
.sze-tile {
    width: 12px; height: 16px; border-radius: 2px;
    background: var(--sze-panel-3); border: 1px solid var(--sze-rule);
}
.sze-tile.blank { background: var(--sze-student-wash); border: 1px dashed var(--sze-student); }
.sze-tile.nocard { background: transparent; border: 1px dotted var(--sze-ink-faint); opacity: .55; }
.sze-tile-i { display: inline-block; vertical-align: middle; margin-right: .4em; }
.sze-celln {
    display: block; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .72em; color: var(--sze-ink-faint); margin-top: .25em;
}
.sze-celln.zero { color: var(--sze-warn); font-weight: 700; }
.sze-scell b { display: block; font-size: 1em; font-weight: 600; line-height: 1.3; }
.sze-scell span { display: block; font-size: .82em; color: var(--sze-ink-faint); }
.sze-foot td {
    background: var(--sze-panel-2);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .8em; font-weight: 700;
}
.sze-foot td.zero { background: var(--sze-warn-wash); color: var(--sze-warn); }

/* ---------- toast ---------- */
.sze-toast {
    position: absolute; left: 50%; bottom: 1.2em; transform: translateX(-50%) translateY(1em);
    display: flex; align-items: center; gap: .8em; z-index: 40;
    background: var(--sze-ink); color: var(--sze-panel); border-radius: .6em;
    padding: .6em 1em; font-size: .82em; box-shadow: var(--sze-shadow);
    opacity: 0; pointer-events: none;
}
.sze-toast[data-open="true"] { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.sze-toast button {
    border: 0; background: transparent; color: var(--sze-student);
    font-weight: 700; cursor: pointer; padding: .1em .3em; border-radius: .3em;
}
.sze-toast button:hover { text-decoration: underline; }

@media (prefers-reduced-motion: no-preference) {
    .sze-toast { transition: opacity .16s ease, transform .16s ease; }
    .sze-btn, .sze-srow, .sze-pair, .sze-fchip, .sze-ft, .sze-card {
        transition: border-color .12s ease, background .12s ease, box-shadow .12s ease;
    }
}

/* ---------- narrow screens ---------- */
@media (max-width: 1100px) {
    .sze-body { flex-direction: column; }
    .sze-side {
        flex: 0 0 auto; border-left: 0; border-top: 1px solid var(--sze-rule);
        max-height: none;
    }
    .sze-main { max-height: none; }
}

/* ---------- the panel the editor mounts into ---------- */
.sz-editor-panel {
    margin: 1rem 0;
    border-top: 1px solid var(--border-color, #E4E6EF);
    padding-top: 1rem;
}
.sz-editor-panel.hidden { display: none; }