:root{color-scheme:light;--paper:#fcfbf8;--ink:#282825;--muted:#878783;--line:#e5e3dd;--white:#fff;--accent:#282825;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{opacity:.4;cursor:default}button:focus-visible,input:focus-visible,a:focus-visible{outline:2px solid #717169;outline-offset:5px}button{border:0;background:none}button svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.4;fill:none;stroke-linecap:round;stroke-linejoin:round}p{line-height:1.6;margin:0}.app{max-width:680px;margin:auto;min-height:100svh;min-height:100dvh;display:flex;flex-direction:column;padding:calc(env(safe-area-inset-top) + 25px) 26px 0}header{display:flex;align-items:center;justify-content:space-between;gap:20px}h1{font:400 37px/1.2 ui-serif,"Iowan Old Style","Palatino Linotype",Georgia,serif;letter-spacing:-1px;margin:0}h2{font-size:16px;font-weight:500;letter-spacing:-.2px;margin:0}h3{font-size:13px;font-weight:500;margin:0 0 20px}.icon-button{width:44px;height:44px;padding:10px;display:grid;place-items:center}.subtitle{color:var(--muted);font-size:13px;margin:10px 0 36px}.deck-list{list-style:none;margin:0;padding:0}.deck-row{display:flex;width:100%;align-items:center;text-align:left;padding:25px 0;gap:22px;border-bottom:1px solid var(--line);border-radius:0}.deck-copy{flex:1;min-width:0}.deck-name{font-size:17px;font-weight:500;letter-spacing:-.25px;line-height:1.45}.deck-meta{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.5}.deck-count{font-size:14px;font-variant-numeric:tabular-nums}.chevron{width:7px;height:7px;border-top:1px solid var(--muted);border-right:1px solid var(--muted);transform:rotate(45deg);margin-right:4px}.grow{flex:1}.bottom-action{padding:35px 0 22px}.primary{display:block;width:100%;border-radius:11px;background:var(--accent);color:var(--paper);padding:17px 20px;font-size:15px;font-weight:500;line-height:1.25;min-height:52px;transition:opacity .15s}.primary:active{opacity:.8}.text-button{font-size:14px;text-decoration:underline;text-underline-offset:4px;padding:8px 0}.quiet{text-align:center;color:var(--muted);font-size:12px;margin-top:14px}.empty{padding-top:35px;max-width:400px}.empty p{font-size:15px;color:var(--muted);margin:12px 0 20px}.nav{display:flex;justify-content:space-around;padding:15px 0 calc(13px + env(safe-area-inset-bottom));border-top:1px solid var(--line);gap:10px}.nav button{font-size:11px;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:7px;min-width:54px;min-height:44px;padding:0}.nav button[aria-current=page]{color:var(--ink)}.nav svg{width:18px;height:18px}.search{width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;padding:14px 0;font-size:16px;border-radius:0;color:var(--ink);margin:6px 0 18px}.search::placeholder{color:#a1a09b}.list{margin:0;padding:0;list-style:none}.card-row{padding:20px 0;text-align:left;width:100%;border-bottom:1px solid var(--line)}.card-row strong{font-size:15px;font-weight:400;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-row span{display:block;font-size:12px;color:var(--muted);margin-top:8px}.section{padding:26px 0;border-bottom:1px solid var(--line)}.section p{color:var(--muted);font-size:13px}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:12px 0;font-size:14px;line-height:1.5}.setting-row input[type=number]{width:68px;padding:7px;border:1px solid var(--line);border-radius:6px;background:transparent;text-align:center}.setting-row input[type=checkbox]{width:19px;height:19px;accent-color:var(--accent)}.setting-row input[type=range]{width:120px;accent-color:var(--accent)}.settings-button{display:block;text-align:left;padding:13px 0;width:100%;font-size:14px}.version{font-size:11px;color:var(--muted);padding:30px 0}.metrics{display:flex;gap:50px;padding:4px 0 30px}.metric strong{display:block;font:400 38px/1.3 ui-serif,Georgia,serif}.metric span{font-size:12px;color:var(--muted);display:block;margin-top:8px}.chart{display:flex;gap:14px;height:180px;align-items:flex-end;margin:28px 0 35px}.chart-day{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;flex:1;height:100%;gap:10px}.chart-bar{width:100%;max-width:38px;background:#d1d0c8;border-radius:3px 3px 0 0;min-height:2px}.chart-day:last-child .chart-bar{background:var(--accent)}.chart-day span{font-size:11px;color:var(--muted)}.chart-day b{font-size:11px;font-weight:400}.study{max-width:800px;min-height:100svh;height:100dvh;margin:auto;display:flex;flex-direction:column;padding:calc(env(safe-area-inset-top) + 12px) 18px calc(env(safe-area-inset-bottom) + 16px)}.study-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0}.study-head p{font-size:13px;text-align:center;color:var(--muted);line-height:1.4;max-width:70%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.study-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;padding:16px 4px}.card-frame{border:1px solid var(--line);border-radius:12px;background:white;flex:1;width:100%;min-height:150px}.study-actions{padding:19px 0 0;flex-shrink:0}.ratings{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.rating{border:1px solid var(--line);border-radius:9px;padding:13px 3px;background:transparent;min-height:63px}.rating span{display:block;font-size:10px;color:var(--muted);margin-bottom:7px}.rating b{font-weight:500;font-size:12px}.rating[data-rating="3"]{background:var(--accent);border-color:var(--accent);color:white}.rating[data-rating="3"] span{color:#ccc}.study-footer{display:flex;justify-content:center;margin-top:12px}.study-footer button{color:var(--muted);font-size:11px;padding:5px 12px}.finished{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:18px;padding:30px}.finished h1{font-size:31px}.finished p{color:var(--muted);font-size:14px}.notice{padding:14px 0;color:var(--muted);font-size:12px}.notice button{font-size:12px;text-decoration:underline}dialog{border:1px solid var(--line);border-radius:16px;padding:26px;max-width:calc(100% - 36px);width:380px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#0005;backdrop-filter:blur(3px)}dialog h2{font:400 27px/1.25 ui-serif,Georgia,serif;margin-bottom:14px}dialog p{font-size:14px;color:#696963;margin-bottom:24px;white-space:pre-line}dialog .buttons{display:flex;gap:10px}dialog .buttons button{flex:1;border-radius:9px;padding:13px;border:1px solid var(--line);font-size:14px}dialog .buttons button:last-child{background:var(--accent);color:white}#toast{position:fixed;bottom:calc(90px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 36px);padding:13px 20px;border:1px solid var(--line);background:var(--paper);box-shadow:0 5px 30px #0001;border-radius:10px;font-size:13px;z-index:20;line-height:1.5}#busy{position:fixed;inset:0;background:#fcfbf8b8;backdrop-filter:blur(4px);z-index:50;display:grid;place-items:center;text-align:center;font-size:13px}.spinner{display:inline-block;width:22px;height:22px;border:1px solid var(--line);border-top-color:var(--ink);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:15px}[hidden]{display:none!important}.initial{min-height:90svh;display:grid;align-content:center;justify-content:center;text-align:center;gap:16px;font:400 36px ui-serif,Georgia,serif}.initial span{font:13px -apple-system,sans-serif;color:var(--muted)}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:700px){.app{padding-top:60px;max-width:620px}.nav{margin-top:24px}.bottom-action{max-width:100%;padding-top:50px}.study{padding:30px 24px;height:100vh}.card-frame{margin-top:8px}.subtitle{margin-bottom:42px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}@media(max-height:540px){.study{height:auto;min-height:100dvh}.card-frame{min-height:200px}.study-head{padding:0}.study-meta{padding:8px}.study-actions{padding-top:10px}}

/* Keep the familiar quiet layout usable on small screens and with the keyboard open. */
html{overflow-x:hidden}body{overflow-wrap:break-word}.app{padding-bottom:calc(92px + env(safe-area-inset-bottom))}.nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:620px;background:var(--paper);z-index:10;padding-left:22px;padding-right:22px}.nav button{flex:1;min-width:0}.header-actions{display:flex;gap:0;flex-shrink:0}.deck-row{gap:14px}.deck-name{overflow-wrap:anywhere}.deck-count{font-size:12px;white-space:nowrap}.muted{color:var(--muted)}.subtitle{margin-bottom:14px}.sync-badge{align-self:flex-start;color:var(--muted);font-size:11px;min-height:32px;padding:0 0 15px;text-align:left}.secondary-link{display:block;width:100%;min-height:48px;margin-top:8px;font-size:14px}.collection-link{margin-top:20px;min-height:44px}.eyebrow{font-size:10px!important;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);margin:0 0 14px!important}.empty h2{font:400 28px/1.25 ui-serif,Georgia,serif;letter-spacing:-.6px}.filter-tabs{display:flex;gap:8px;flex-wrap:wrap;padding:2px 0 26px}.filter-tabs button{border:1px solid var(--line);border-radius:24px;font-size:13px;min-height:44px;padding:8px 18px}.filter-tabs button[aria-pressed=true]{background:var(--ink);color:var(--paper);border-color:var(--ink)}.collection{padding:26px;border:1px solid var(--line);border-radius:14px;margin-bottom:22px;background:#fff8}.collection h2{font:400 29px/1.2 ui-serif,Georgia,serif;margin:0 0 12px;letter-spacing:-.5px}.collection>p:not(.eyebrow){font-size:14px;color:var(--muted)}.collection-meta{font-size:12px;color:var(--muted);margin:18px 0 24px}.import-section{padding:18px 0}.import-section>p{font-size:13px;color:var(--muted);margin:10px 0}.help summary{font-size:14px;cursor:pointer;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none}.help summary::-webkit-details-marker{display:none}.help summary::after{content:'+';font-size:18px;color:var(--muted)}.help[open] summary::after{content:'−'}.help p{font-size:13px;color:var(--muted);margin-top:12px}.profile-section{display:flex;gap:18px;align-items:center;justify-content:space-between}.profile-section .eyebrow{margin-bottom:8px!important}.profile-section p{margin-top:8px}.profile-section .text-button{white-space:nowrap;min-height:44px}.settings-button,.study-footer button{min-height:44px}.setting-row{gap:16px}.setting-row input{flex-shrink:0;font-size:16px}.study-meta{line-height:1.5}.study-footer{margin-top:4px}.card-frame{min-width:0}.study-actions{padding-top:12px}.ratings{gap:7px}.login{max-width:440px;margin:auto;min-height:100svh;min-height:100dvh;padding:calc(34px + env(safe-area-inset-top)) 28px calc(24px + env(safe-area-inset-bottom));display:flex;flex-direction:column}.wordmark{color:var(--ink);font:400 25px ui-serif,Georgia,serif;text-decoration:none;letter-spacing:-.5px;align-self:flex-start}.login-content{margin:auto 0;padding:52px 0}.login h1{font-size:43px;letter-spacing:-1.4px}.login-description{color:var(--muted);font-size:15px;margin:18px 0 36px}.login label{display:block;font-size:12px;margin-bottom:10px}.login input{display:block;width:100%;min-height:56px;padding:15px 16px;background:#fff8;border:1px solid var(--line);border-radius:10px;font-size:17px;color:var(--ink);margin-bottom:18px}.login input[aria-invalid=true]{border-color:#a05d4c}.login .primary{display:flex;justify-content:space-between;align-items:center}.form-error{font-size:13px;line-height:1.5;color:#925242;margin:0 0 18px}.login-footnote{font-size:11px;color:var(--muted);text-align:center}.login .quiet{line-height:1.6}.initial{padding:25px}.metrics{gap:36px}
@media(max-width:360px){.app{padding-left:20px;padding-right:20px}.deck-row{gap:10px}.deck-name{font-size:16px}.deck-count{font-size:11px}.study{padding-left:12px;padding-right:12px}.rating{padding-left:1px;padding-right:1px}.collection{padding:22px}.login{padding-left:24px;padding-right:24px}.setting-row input[type=range]{width:100px}.profile-section{align-items:flex-start;flex-direction:column}}
@media(min-width:700px){.nav{margin-top:0}.subtitle{margin-bottom:14px}.login-content{padding-top:65px;padding-bottom:65px}}
@media(max-height:600px){.login-content{padding:28px 0}.login-description{margin:12px 0 24px}.login h1{font-size:35px}}