/* Approved preparation matching activity. Keep styles inside section 03. */
.salt-matching { --neut-glass:#b3c9d1; --neut-paper:#302c27; --neut-crystal:#f2e8d7; --neut-crystal-edge:#a49a88; }
:root[data-theme="light"] .salt-matching { --neut-glass:#607d87; --neut-paper:#fffdf8; --neut-crystal:#fffdf2; --neut-crystal-edge:#998b72; }
.salt-matching .matching-heading { display:flex; align-items:center; justify-content:space-between; gap:20px; }
.salt-matching h2 { font-size:clamp(1.5rem,2.6vw,2rem); }
.salt-matching .matching-badge { flex-shrink:0; padding:8px 13px; border:1px solid var(--neut-border); border-radius:30px; color:var(--color-accent); font-size:12px; font-weight:700; text-align:center; }
.salt-matching .matching-intro { margin:16px 0 20px; max-width:950px; font-size:14px; }
.salt-matching .matching-instructions { display:flex; flex-wrap:wrap; gap:16px 35px; padding:0; margin:0 0 22px; list-style:none; }
.salt-matching .matching-instructions li { display:flex; align-items:center; gap:9px; font-size:12px; color:var(--neut-muted); }
.salt-matching .matching-instructions li>span { display:grid; place-items:center; flex-shrink:0; width:25px; height:25px; border:1px solid var(--neut-border); border-radius:50%; color:var(--color-accent); }
.salt-matching .matching-instructions strong { font-weight:500; }
.salt-matching .matching-toggle-help { margin:0 0 4px; font-size:12px; }
.salt-matching .graphic-tray { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:10px; }
.salt-matching .graphic-card { position:relative; display:flex; flex-direction:column; align-items:center; min-width:0; padding:24px 6px 8px; border:1px solid var(--neut-border); border-radius:10px; background:var(--color-bg-panel); color:var(--color-text); cursor:pointer; transition:border-color .15s,background .15s; }
.salt-matching .graphic-card svg { display:block; width:100%; max-width:210px; height:130px; stroke-linecap:round; stroke-linejoin:round; pointer-events:none; }
.salt-matching .graphic-letter { position:absolute; top:7px; left:9px; display:grid; place-items:center; width:23px; height:23px; border-radius:6px; background:var(--neut-soft); color:var(--color-accent); font-size:12px; font-weight:700; }
.salt-matching .graphic-state { min-height:20px; margin-top:3px; font-size:10px; color:var(--neut-muted); text-align:center; }
.salt-matching .graphic-card:hover, .salt-matching .graphic-card[aria-pressed="true"] { border-color:var(--color-accent); background:var(--neut-soft); }
.salt-matching .graphic-card[aria-pressed="true"] { box-shadow:inset 0 0 0 1px var(--color-accent); }
.salt-matching .graphic-card.is-placed .graphic-letter { background:var(--color-accent); color:var(--color-bg-dark); }
.salt-matching .graphic-card:disabled { cursor:default; }
.salt-matching .matching-status-row { display:flex; justify-content:space-between; align-items:center; gap:20px; padding:14px 2px; }
.salt-matching .matching-status-row p { min-height:22px; font-size:12px; margin:0; }
.salt-matching .matching-progress { display:flex; align-items:center; gap:12px; flex-shrink:0; font-size:12px; color:var(--color-accent); }
.salt-matching .matching-progress progress { width:100px; height:6px; accent-color:var(--color-accent); }
.salt-matching .matching-methods { gap:18px; align-items:start; }
.salt-matching .matching-method { container-type:normal; padding:23px; box-shadow:none; }
.salt-matching .matching-method h3 { margin:10px 0; font-size:21px; }
.salt-matching .matching-example { font-size:12px; margin:0 0 20px; }
.salt-matching .matching-method-top { display:flex; justify-content:space-between; align-items:center; gap:8px; }
.salt-matching .method-score { flex-shrink:0; font-size:14px; color:var(--color-accent); font-weight:700; }
.salt-matching .matching-steps { margin:0; padding:0; list-style:none; display:grid; gap:12px; }
.salt-matching .matching-step { min-width:0; position:relative; display:grid; grid-template-columns:100px minmax(0,1fr); gap:14px; padding:13px 0 0; border-top:1px solid var(--neut-border); }
.salt-matching .matching-slot-wrap { position:relative; align-self:start; }
.salt-matching .matching-slot { display:flex; flex-direction:column; align-items:center; justify-content:center; width:100%; min-height:106px; padding:8px 5px; border:1px dashed var(--neut-border); border-radius:10px; color:var(--color-accent); background:var(--neut-soft); cursor:pointer; }
.salt-matching .matching-slot:hover, .salt-matching .matching-slot.is-drop-target { border-color:var(--color-accent); background:rgba(184,128,74,.13); }
.salt-matching .matching-slot svg { display:block; width:100%; height:91px; stroke-linecap:round; stroke-linejoin:round; }
.salt-matching .matching-slot .slot-prompt { font-size:10px; line-height:1.4; text-align:center; }
.salt-matching .matching-slot .slot-plus { font-size:25px; font-weight:400; line-height:1; margin-bottom:5px; }
.salt-matching .matching-slot.has-graphic { min-height:130px; border-style:solid; padding-top:14px; }
.salt-matching .matching-slot.has-graphic .slot-prompt { font-weight:700; }
.salt-matching .slot-letter { font-size:11px; font-weight:700; margin-bottom:3px; }
.salt-matching .matching-slot[aria-expanded="true"] { border-color:var(--color-accent); border-style:solid; box-shadow:inset 0 0 0 1px var(--color-accent); }
.salt-matching .slot-remove { position:absolute; top:4px; right:4px; z-index:1; display:grid; place-items:center; width:28px; height:28px; padding:0; border:1px solid var(--neut-border); border-radius:50%; background:var(--color-bg-panel); color:var(--color-text); cursor:pointer; line-height:1; }
.salt-matching .slot-remove > svg { display:block; width:12px; height:12px; fill:none; stroke:currentColor; stroke-width:1.6; stroke-linecap:round; pointer-events:none; }
.salt-matching .matching-step-title { margin:2px 0 7px; font-size:13px; font-weight:700; color:var(--color-text); }
.salt-matching .matching-step-number { color:var(--color-accent); margin-right:7px; font-size:12px; }
.salt-matching .matching-step-copy { font-size:12px; line-height:1.5; }
.salt-matching .matching-step-copy p { margin:0; }
.salt-matching .step-feedback { margin:9px 0 0; font-size:11px; }
.salt-matching .step-feedback.is-correct { color:var(--neut-green); }
.salt-matching .step-feedback.is-incorrect { color:var(--neut-red); }
.salt-matching .matching-step.is-correct .matching-slot { border-color:var(--neut-green); border-style:solid; }
.salt-matching .matching-step.is-incorrect .matching-slot, .salt-matching .matching-step.is-missing .matching-slot { border-color:var(--neut-red); border-style:solid; }
.salt-matching .matching-step.is-correct .matching-slot, .salt-matching .matching-step.is-incorrect .matching-slot { cursor:default; }
.salt-matching .correct-reveal { grid-column:1/-1; display:flex; gap:14px; align-items:center; padding:12px; border-radius:8px; background:var(--neut-soft); }
.salt-matching .correct-reveal svg { width:85px; height:85px; flex-shrink:0; stroke-linecap:round; stroke-linejoin:round; }
.salt-matching .correct-reveal strong { font-size:12px; }
.salt-matching .correct-reveal p { margin:5px 0 0; font-size:12px; }
.salt-matching .matching-submit { display:flex; justify-content:space-between; align-items:center; gap:20px; padding:22px 0; }
.salt-matching .matching-submit p { margin:0; font-size:12px; }
.salt-matching .matching-result { display:flex; align-items:center; gap:22px; padding:22px 26px; border:1px solid var(--color-accent); border-radius:12px; background:var(--neut-soft); scroll-margin-top:22px; }
.salt-matching .matching-result-score { color:var(--color-accent); font-size:38px; line-height:1.15; font-weight:700; white-space:nowrap; }
.salt-matching .matching-result h3 { margin:0 0 6px; font-size:19px; }
.salt-matching .matching-result p { margin:0; font-size:13px; }
.salt-matching .matching-picker { grid-column:1/-1; min-width:0; padding:14px; border:1px solid var(--color-accent); border-radius:12px; background:var(--color-bg-dark); color:var(--color-text); }
.salt-matching .matching-picker > p { font-size:12px; margin:9px 0 14px; }
.salt-matching .matching-picker .graphic-tray { grid-template-columns:repeat(4,minmax(0,1fr)); }
.salt-matching .matching-picker .graphic-card svg { height:100px; }
.salt-matching .matching-picker .graphic-card { padding:24px 4px 5px; }
.salt-matching .picker-heading { display:flex; align-items:center; justify-content:space-between; gap:14px; }
.salt-matching .picker-heading h4 { font-size:14px; margin:0; }
.salt-matching .picker-heading .neut-button { padding:7px 10px; font-size:11px!important; }
:root[data-language="both"] .salt-matching .matching-method { padding:22px; }
:root[data-language="both"] .salt-matching .matching-step-title .i18n-en { font-size:.86em; }
@media(max-width:1100px) {
.salt-matching .graphic-tray { grid-template-columns:repeat(4,minmax(0,1fr)); }
.salt-matching .graphic-card svg { height:110px; }
.salt-matching .matching-step { grid-template-columns:88px minmax(0,1fr); gap:12px; }
.salt-matching .matching-method { padding:18px; }
}
@media(max-width:800px) {
.salt-matching .matching-methods { grid-template-columns:1fr; }
.salt-matching .matching-submit { align-items:flex-start; flex-direction:column; gap:12px; }
.salt-matching .matching-heading { align-items:flex-start; }
.salt-matching .matching-badge { font-size:10px; padding:7px 10px; }
.salt-matching .matching-step { grid-template-columns:110px minmax(0,1fr); }
}
@media(max-width:520px) {
.salt-matching .matching-heading { flex-wrap:wrap; gap:12px; }
.salt-matching .matching-heading .matching-badge .i18n-pair { display:block; }
.salt-matching .matching-heading .matching-badge .i18n-en { display:none; }
.salt-matching .matching-instructions { display:grid; grid-template-columns:1fr; gap:8px; }
.salt-matching .matching-intro { font-size:13px; }
.salt-matching .graphic-tray, .salt-matching .matching-picker .graphic-tray { grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px; }
.salt-matching .matching-status-row { flex-direction:column; align-items:flex-start; gap:10px; }
.salt-matching .matching-progress { width:100%; }
.salt-matching .matching-progress progress { flex:1; }
.salt-matching .matching-step { grid-template-columns:90px minmax(0,1fr); gap:12px; }
.salt-matching .matching-method, :root[data-language="both"] .salt-matching .matching-method { padding:17px; }
.salt-matching .matching-step-title { font-size:13px; }
.salt-matching .matching-slot { min-height:112px; }
.salt-matching .matching-result { align-items:flex-start; flex-direction:column; gap:12px; padding:20px; }
.salt-matching .matching-picker { padding:10px; }
.salt-matching .picker-heading { align-items:flex-start; }
}