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transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);letter-spacing:.06em;text-transform:uppercase;border-radius:999px;padding:7px 10px;font-size:.68rem;font-weight:700;position:fixed;overflow:hidden}.quiet-title h2,.deck-detail .section-title h2,.cards-page .section-title h2{font-size:clamp(3.2rem,15vw,7rem);line-height:.86}.deck-detail .section-title,.cards-page .section-title{align-items:flex-end;padding:8px 2px 0}.deck-detail .section-title p,.cards-page .section-title p{max-width:40rem;color:var(--muted);margin-top:10px;font-size:1rem;line-height:1.65}.deck-form,.card-composer,.deck-row,.flashcard,.study-card,.empty-state{border:1px solid var(--line);background:var(--surface);box-shadow:0 22px 70px color-mix(in oklch, var(--olive-950) 8%, transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:28px}.deck-form,.card-composer{gap:10px;padding:12px;display:grid}.deck-form{grid-template-columns:1fr 1fr auto}input,textarea{border:1px solid var(--line);width:100%;color:var(--text);background:oklch(100% 5.96046e-8 none/.58);border-radius:999px;outline:none}input{height:46px;padding:0 15px}textarea{resize:vertical;border-radius:22px;min-height:132px;padding:15px;line-height:1.45}input:focus,textarea:focus{border-color:var(--olive-500);box-shadow:0 0 0 4px color-mix(in oklch, var(--olive-500) 16%, transparent)}label{color:var(--muted);gap:8px;font-size:.84rem;font-weight:700;display:grid}.primary-action,.hero-action,.secondary-action,.danger-action,.rating{border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:44px;font-size:.9rem;font-weight:700;display:inline-flex}.primary-action,.hero-action{color:#fff;background:var(--olive-950)}.primary-action:hover,.hero-action:hover{background:var(--olive-800)}.hero-action{min-height:54px;padding:0 22px}.primary-action{padding:0 16px}.primary-action.wide,.deck-actions .hero-action,.deck-actions .secondary-action{width:100%}.secondary-action{color:var(--olive-950);background:color-mix(in oklch, var(--olive-950) 8%, transparent);padding:0 16px}.secondary-action:hover{background:color-mix(in oklch, var(--olive-950) 12%, transparent)}.danger-action{color:var(--danger);background:color-mix(in oklch, var(--danger) 10%, transparent);padding:0 16px}.danger-action:hover{background:color-mix(in oklch, var(--danger) 15%, transparent)}.deck-list,.card-list{gap:10px;display:grid}.deck-row{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:manipulation;gap:12px;min-height:84px;padding:12px;position:relative}.deck-row.actions-open{border-color:var(--line-strong);box-shadow:0 22px 70px color-mix(in oklch, var(--olive-950) 10%, transparent), inset 0 0 0 1px color-mix(in oklch, var(--olive-950) 8%, transparent)}.deck-row-main{min-width:0;color:var(--text);text-align:left;background:0 0;border:0;flex:1;gap:12px}.deck-row-main span{gap:3px;min-width:0;display:grid}.deck-row-main strong,.deck-row-main small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.deck-row-main strong{font-size:1.02rem}.deck-row-main small,.deck-row-stats{color:var(--muted)}.deck-row-stats{flex-wrap:wrap;justify-content:flex-end;gap:8px;font-size:.82rem;display:flex}.deck-summary{flex-wrap:wrap;gap:8px;margin-top:-4px;display:flex}.deck-summary span{border:1px solid var(--line);min-height:34px;color:var(--muted);background:oklch(100% 5.96046e-8 none/.42);border-radius:999px;align-items:center;padding:0 12px;font-size:.82rem;font-weight:700;display:inline-flex}.deck-summary strong{color:var(--olive-950);margin-right:5px;font-size:.92rem;font-weight:800}.deck-actions{grid-template-columns:minmax(0,1.4fr) minmax(150px,.55fr) minmax(150px,.55fr);gap:10px;display:grid}.card-composer{grid-template-columns:repeat(2,minmax(0,1fr))}.composer-footer{grid-column:1/-1;grid-template-columns:1fr auto;gap:10px;display:grid}.card-list{grid-template-columns:repeat(2,minmax(0,1fr))}.flashcard{min-height:216px;color:var(--text);-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:manipulation;background:oklch(100% 5.96046e-8 none/.62);gap:12px;padding:17px;display:grid;position:relative}.flashcard.actions-open{border-color:var(--line-strong);box-shadow:0 22px 70px color-mix(in oklch, var(--olive-950) 10%, transparent), inset 0 0 0 1px color-mix(in oklch, var(--olive-950) 8%, transparent)}.card-meta{color:var(--quiet);font-size:.78rem;font-weight:700}.math-text{overflow-wrap:anywhere;white-space:pre-wrap;line-height:1.52}.divider{background:var(--line);height:1px}.tag-row{flex-wrap:wrap;align-self:end;gap:7px;display:flex}.tag-row span{min-height:27px;color:var(--olive-950);background:color-mix(in oklch, var(--olive-950) 8%, transparent);border-radius:999px;align-items:center;padding:0 9px;font-size:.76rem;font-weight:700;display:inline-flex}.card-actions{border:1px solid var(--line);box-shadow:0 12px 34px color-mix(in oklch, var(--olive-950) 12%, transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:oklch(100% 5.96046e-8 none/.78);border-radius:999px;grid-template-columns:1fr 1fr auto;gap:8px;padding:8px;display:grid;position:absolute;bottom:12px;left:12px;right:12px}.project-actions{border:1px solid var(--line);box-shadow:0 12px 34px color-mix(in oklch, var(--olive-950) 12%, transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:oklch(100% 5.96046e-8 none/.78);border-radius:999px;grid-template-columns:minmax(104px,auto) auto;gap:8px;padding:8px;display:grid;position:absolute;bottom:10px;right:10px}.icon-button.small{flex-basis:38px;width:38px;height:38px}.edit-card-form{gap:10px;display:grid}.edit-card-form textarea{min-height:110px}.card-action-row{grid-template-columns:1fr 1fr;gap:8px;display:grid}.review-topbar{padding-top:4px}.review-count{color:#fff;background:var(--olive-950);border-radius:999px;place-items:center;min-width:42px;height:42px;padding:0 13px;font-weight:800;display:grid}.study-card,.empty-state{gap:16px;margin-top:18px;padding:clamp(16px,4vw,22px);display:grid}.review-progress{color:var(--muted);font-size:.86rem;font-weight:700}.prompt,.answer{border-radius:24px;min-height:190px;padding:clamp(18px,5vw,30px)}.prompt{color:var(--olive-950);text-align:center;background:oklch(100% 5.96046e-8 none/.68);place-items:center;font-family:Instrument Serif,Georgia,serif;font-size:clamp(1.8rem,7vw,3.4rem);display:grid}.answer{color:var(--text);background:oklch(100% 5.96046e-8 none/.46)}.rating-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.rating{min-height:66px;color:var(--olive-950);background:color-mix(in oklch, var(--olive-950) 8%, transparent);gap:3px;display:grid}.rating.medium{background:color-mix(in oklch, var(--olive-950) 12%, transparent)}.rating.easy{color:#fff;background:var(--olive-950)}.rating span{opacity:.72;font-size:.74rem;font-weight:600}.empty-state{text-align:center;place-items:center;min-height:320px}.empty-state p{max-width:34rem;color:var(--muted)}.pager{color:var(--muted);justify-content:center;align-items:center;gap:10px;font-size:.84rem;font-weight:700;display:flex}.pager .secondary-action{min-width:112px}@media (width<=860px){.card-list,.deck-form,.card-composer,.composer-footer,.deck-actions{grid-template-columns:1fr}}@media (width<=560px){.app-frame,.review-screen{padding-inline:12px}.app-frame{padding-bottom:max(72px, calc(env(safe-area-inset-bottom) + 52px))}.app-header{margin-inline:-12px;padding-inline:12px}.quiet-title h2,.deck-detail .section-title h2,.cards-page .section-title h2{font-size:clamp(3.35rem,18vw,5.4rem)}.rating-grid{grid-template-columns:1fr}.deck-row{flex-direction:column;align-items:stretch}.deck-row.actions-open{padding-bottom:68px}.deck-row-stats{justify-content:flex-start}.section-title{flex-direction:column;align-items:stretch}.quiet-title{flex-direction:column;align-items:flex-start}.quiet-title .secondary-action{width:100%}.sync-indicator{max-width:calc(100vw - 24px);left:auto;right:12px}.pager{flex-direction:column;align-items:stretch}.card-actions{border-radius:28px;grid-template-columns:1fr 1fr auto}.project-actions{border-radius:28px;grid-template-columns:1fr auto;bottom:12px;left:12px;right:12px}.prompt,.answer{min-height:210px}}