@import "https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Nunito:wght@400;500;600;700&family=Poppins:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap";:root{--body-bg:linear-gradient(160deg, #1a1028 0%, #2a1f38 55%, #1e1e2e 100%);--bg:#1a1028;--paper:#241835;--soft:#2e2245;--softer:#1e1530;--ink:#f0e8ff;--ink-soft:#b8a8d4;--ink-faint:#7a6a90;--rule:#b496ff1f;--shadow:#00000073;--accent-warm:#f96;--accent-leaf:#7abf9e;--accent-leaf-pale:#5a9e7e;--accent-sky:#89b4d4;--accent-rose:#d4a0c0;--font-serif:"Fraunces", Georgia, serif;--font-sans:"Poppins", "Nunito", -apple-system, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-pill:999px}[data-theme=light]{--body-bg:#fdf8f0;--bg:#fdf8f0;--paper:#fff;--soft:#f5ede0;--softer:#faf3e7;--ink:#2d2a26;--ink-soft:#5d574e;--ink-faint:#8a8278;--rule:#e8dcc8;--shadow:#785a3214;--accent-warm:#c97b5e;--accent-leaf:#7a9471;--accent-leaf-pale:#a3b89c;--accent-sky:#6b8aa8;--accent-rose:#b87d7d;--font-sans:"Nunito", -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--body-bg);color:var(--ink);-webkit-font-smoothing:antialiased;background-attachment:fixed;min-height:100vh;line-height:1.55}.app-shell{max-width:620px;margin:0 auto;padding:20px 18px 60px}.header-row{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.back-link{color:var(--ink-faint);border-bottom:1px dotted var(--ink-faint);font-size:12px;text-decoration:none;transition:color .2s,border-color .2s}.back-link:hover{color:var(--accent-warm);border-color:var(--accent-warm)}.header-controls{align-items:center;gap:6px;display:flex}.theme-btn{background:var(--soft);border:1px solid var(--rule);color:var(--ink-soft);border-radius:var(--radius-pill);cursor:pointer;padding:4px 10px;font-family:inherit;font-size:14px;line-height:1;transition:background .2s}.theme-btn:hover{background:var(--rule)}.auth-btn{background:var(--soft);border:1px solid var(--rule);color:var(--ink-soft);border-radius:var(--radius-pill);cursor:pointer;letter-spacing:.02em;text-overflow:ellipsis;white-space:nowrap;max-width:120px;padding:4px 10px;font-family:inherit;font-size:11.5px;font-weight:600;line-height:1;transition:background .2s,color .2s,border-color .2s;overflow:hidden}.auth-btn:hover{background:var(--rule);color:var(--ink)}.auth-btn.auth-logged-in{color:var(--accent-cool,#7abf9e);background:#7abf9e14;border-color:#7abf9e59}.auth-btn.auth-logged-in:hover{background:#7abf9e26}header{text-align:center;margin-bottom:18px}header h1{font-family:var(--font-serif);letter-spacing:-.01em;color:var(--ink);font-size:28px;font-weight:500}header .subtitle{color:var(--ink-faint);font-size:13px;font-style:italic}header .stats{color:var(--ink-faint);margin-top:6px;font-size:11px}.mode-nav{background:var(--paper);border-radius:var(--radius-lg);border:1px solid var(--rule);gap:4px;margin-bottom:18px;padding:4px;display:flex}.mode-btn{color:var(--ink-soft);cursor:pointer;border-radius:var(--radius-md);letter-spacing:.04em;text-transform:uppercase;background:0 0;border:none;flex:1;padding:8px 4px;font-family:inherit;font-size:12px;font-weight:600;transition:background .15s,color .15s}.mode-btn.active{background:var(--accent-warm);color:#fff}.mode-btn:not(.active):hover{background:var(--soft);color:var(--ink)}.filters{background:var(--paper);border-radius:var(--radius-lg);border:1px solid var(--rule);flex-wrap:wrap;gap:4px;margin-bottom:8px;padding:4px;display:flex}.filter-btn{min-width:60px;color:var(--ink-soft);cursor:pointer;border-radius:var(--radius-md);white-space:nowrap;background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:2px;padding:6px 4px;font-family:inherit;font-size:11px;font-weight:500;line-height:1.2;transition:background .15s;display:flex}.filter-btn.active{background:var(--soft);color:var(--ink)}.filter-sub{color:var(--ink-faint);letter-spacing:.03em;font-size:9px;font-weight:400}.filter-btn.active .filter-sub{color:var(--ink-soft)}.search{border:1px solid var(--rule);border-radius:var(--radius-md);background:var(--paper);width:100%;color:var(--ink);margin-bottom:8px;padding:10px 14px;font-family:inherit;font-size:14px}.search::placeholder{color:var(--ink-faint)}.search:focus{outline:2px solid var(--accent-warm)}.cat-filter{flex-wrap:wrap;justify-content:center;gap:4px;margin-bottom:14px;display:flex}.cat-pill{font-family:var(--font-mono);border:1px solid var(--rule);background:var(--paper);color:var(--ink-soft);cursor:pointer;border-radius:var(--radius-pill);letter-spacing:.04em;padding:3px 9px;font-size:10.5px;transition:background .15s}.cat-pill.active{background:var(--ink);color:var(--bg);border-color:var(--ink)}.legend{color:var(--ink-faint);text-align:center;margin-bottom:12px;font-size:11px;line-height:1.7}.legend-item{margin:0 6px;display:inline-block}.legend-dot{vertical-align:middle;border-radius:50%;width:8px;height:8px;margin-right:4px;display:inline-block}.helper-text{color:var(--ink-faint);text-align:center;margin-bottom:14px;font-size:12px;font-style:italic}.card{background:var(--paper);border-radius:var(--radius-lg);box-shadow:0 2px 8px var(--shadow);border:1px solid var(--rule);margin-bottom:12px;padding:16px 18px;transition:box-shadow .3s;position:relative}.card.flash{box-shadow:0 0 0 3px var(--accent-warm), 0 4px 12px var(--shadow)}@keyframes linkTargetGlow{0%,25%{box-shadow:0 0 0 3px var(--accent-warm), 0 0 28px #ff996673}to{box-shadow:0 2px 8px var(--shadow)}}.card.link-target{scroll-margin-top:24px;animation:2.5s ease-out forwards linkTargetGlow}.card-tier-strip{border-radius:0 2px 2px 0;width:3px;position:absolute;top:14px;bottom:14px;left:0}.tier-0 .card-tier-strip{background:var(--accent-leaf-pale)}.tier-1 .card-tier-strip{background:var(--accent-leaf)}.tier-2 .card-tier-strip{background:var(--accent-warm)}.tier-3 .card-tier-strip{background:var(--accent-rose)}.card-meta{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.card-tier-label{letter-spacing:.08em;text-transform:uppercase;font-size:10.5px;font-weight:600}.tier-0 .card-tier-label{color:var(--accent-leaf-pale)}.tier-1 .card-tier-label{color:var(--accent-leaf)}.tier-2 .card-tier-label{color:var(--accent-warm)}.tier-3 .card-tier-label{color:var(--accent-rose)}.card-meta-right{align-items:center;gap:6px;display:flex}.card-id{font-family:var(--font-mono);color:var(--ink-faint);background:var(--softer);border-radius:var(--radius-sm);padding:2px 7px;font-size:10px}.python-badge{letter-spacing:.05em;color:var(--accent-sky);border-radius:var(--radius-sm);background:#6b8aa826;padding:2px 7px;font-size:9.5px;font-weight:600}.technical{color:var(--ink-faint);font-size:11px;font-family:var(--font-mono);margin-top:4px}.front{font-family:var(--font-serif);color:var(--ink);font-size:16.5px;font-weight:400;line-height:1.45}.front-style-question{font-style:italic}.front-style-term{font-weight:500}.front-style-imperative{font-weight:400}.front-style-scenario{font-style:italic;line-height:1.5}.reveal-btn{background:var(--soft);width:100%;color:var(--ink);border-radius:var(--radius-md);cursor:pointer;border:none;margin-top:12px;padding:9px;font-family:inherit;font-size:12.5px;font-weight:600;transition:background .15s}.reveal-btn:hover{background:var(--rule)}.card-back{border-top:1px solid var(--rule);margin-top:12px;padding-top:12px;animation:.25s fadeIn}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.hidden{display:none}pre{font-family:var(--font-mono);background:var(--softer);border-radius:var(--radius-md);border:1px solid var(--rule);color:var(--ink);margin:8px 0;padding:10px 12px;font-size:12.5px;line-height:1.55;overflow-x:auto}.explanation{color:var(--ink);margin-bottom:4px;font-size:14px;line-height:1.55}.explanation code,.technique-gist code,.insight code,.gotcha code,.metaphor code,.mnemonic code{font-family:var(--font-mono);background:var(--softer);color:var(--accent-warm);border-radius:4px;padding:1px 5px;font-size:12.5px}.technique-name{font-family:var(--font-serif);color:var(--ink);margin-bottom:6px;font-size:15px;font-weight:500}.technique-gist{color:var(--ink-soft);margin-bottom:10px;font-size:13.5px;line-height:1.5}.annotation-label{letter-spacing:.1em;text-transform:uppercase;opacity:.65;margin-bottom:5px;font-size:9px;font-weight:700}.metaphor{color:var(--ink-soft);background:linear-gradient(to right, var(--softer), transparent);border-radius:var(--radius-md);border-left:3px solid var(--accent-sky);margin:10px 0;padding:9px 12px 9px 14px;font-size:13px;line-height:1.5}.insight{color:var(--ink-soft);background:var(--softer);border-radius:var(--radius-md);border-left:3px solid var(--accent-leaf);margin:10px 0;padding:9px 12px;font-size:13px;line-height:1.5}.mnemonic{color:var(--ink-soft);background:var(--softer);border-radius:var(--radius-md);border-left:3px solid var(--accent-warm);margin:10px 0;padding:9px 12px;font-size:13px;font-style:italic;line-height:1.5}.gotcha{color:var(--ink-soft);border-radius:var(--radius-md);border-left:3px solid var(--accent-rose);background:#b87d7d1a;margin:10px 0;padding:9px 12px;font-size:13px;line-height:1.5}.pythonic-toggle{color:var(--accent-warm);cursor:pointer;border-bottom:1px dotted var(--accent-warm);-webkit-user-select:none;user-select:none;margin-top:8px;font-size:12px;display:inline-block}.pythonic-block{margin-top:8px;display:none}.pythonic-block.open{display:block}.pythonic-note{color:var(--ink-soft);margin-bottom:6px;font-size:12px;font-style:italic}.expand-btn{color:var(--accent-warm);cursor:pointer;border:none;border-bottom:1px dotted var(--accent-warm);background:0 0;margin-top:12px;padding:4px 0;font-family:inherit;font-size:12.5px;font-weight:600}.deep-layer{margin-top:14px;animation:.3s fadeIn;display:none}.deep-layer.open{display:block}.back-label{letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin-top:12px;margin-bottom:6px;font-size:10px;font-weight:600}.hints{list-style:none}.hints li{color:var(--ink-soft);padding:5px 0 5px 22px;font-size:12.5px;line-height:1.5;position:relative}.hints li:before{content:"→";color:var(--accent-warm);font-weight:600;position:absolute;left:4px}.card-link{color:var(--accent-warm);border-bottom:1px dotted var(--accent-warm);cursor:pointer;font-weight:500;text-decoration:none;position:relative}.card-link:hover{color:var(--accent-rose)}.card-link:after{content:attr(data-id);background:var(--ink);color:var(--bg);font-family:var(--font-mono);white-space:nowrap;opacity:0;pointer-events:none;z-index:10;border-radius:4px;padding:3px 8px;font-size:10px;transition:opacity .2s;position:absolute;bottom:100%;left:50%;transform:translate(-50%)translateY(-4px)}.card-link:hover:after{opacity:1}.link-row{margin-bottom:6px;font-size:13px;line-height:1.6}.anchor-problems{list-style:none}.anchor-problems li{padding:3px 0;font-size:12.5px}.anchor-problems a{color:var(--accent-sky);border-bottom:1px dotted var(--accent-sky);text-decoration:none}.lc-num{font-family:var(--font-mono);color:var(--ink-faint);margin-right:6px;font-size:11px}.empty-state{text-align:center;color:var(--ink-faint);padding:40px 20px;font-style:italic}.loading{text-align:center;color:var(--ink-faint);padding:60px 20px}footer{text-align:center;color:var(--ink-faint);margin-top:32px;font-size:11.5px;font-style:italic}.drill-setup{text-align:center;padding:20px 0}.drill-setup h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:8px;font-size:22px;font-weight:500}.drill-setup p{color:var(--ink-soft);margin-bottom:20px;font-size:14px;line-height:1.6}.drill-filters{flex-wrap:wrap;justify-content:center;gap:6px;margin-bottom:20px;display:flex}.drill-filter-btn{border:1px solid var(--rule);background:var(--paper);color:var(--ink-soft);border-radius:var(--radius-pill);cursor:pointer;flex-direction:column;align-items:center;gap:1px;padding:6px 14px;font-family:inherit;font-size:12px;line-height:1.2;transition:all .15s;display:inline-flex}.drill-filter-btn.active{background:var(--accent-warm);border-color:var(--accent-warm);color:#fff}.drill-filter-btn.active .filter-sub{color:#ffffffbf}.queue-summary{color:var(--ink-faint);margin-bottom:20px;font-size:13px}.queue-summary strong,.queue-reviews{color:var(--accent-warm)}.queue-new{color:var(--accent-cool,#7abf9e)}.queue-offline,.queue-loading{color:var(--ink-faint);font-style:italic}.start-btn{background:var(--accent-warm);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;padding:12px 32px;font-family:inherit;font-size:14px;font-weight:600;transition:opacity .15s;display:inline-block}.start-btn:hover{opacity:.85}.start-btn:disabled{opacity:.4;cursor:not-allowed}.drill-progress{align-items:center;gap:10px;margin-bottom:16px;display:flex}.drill-progress-bar{background:var(--soft);border-radius:2px;flex:1;height:4px;overflow:hidden}.drill-progress-fill{background:var(--accent-warm);border-radius:2px;height:100%;transition:width .4s}.drill-progress-label{color:var(--ink-faint);white-space:nowrap;font-size:11px;font-family:var(--font-mono)}.rating-row{gap:8px;margin-top:14px;animation:.25s fadeIn;display:flex}.rating-btn{border-radius:var(--radius-md);cursor:pointer;letter-spacing:.03em;border:none;flex:1;padding:10px 6px;font-family:inherit;font-size:12px;font-weight:700;transition:opacity .15s,transform .1s}.rating-btn:hover{opacity:.85;transform:translateY(-1px)}.rating-btn:active{transform:translateY(0)}.rating-btn.no{color:#e57373;background:#d4505026;border:1px solid #d450504d}.rating-btn.almost{color:var(--accent-warm);background:#ff996626;border:1px solid #ff99664d}.rating-btn.got-it{color:var(--accent-leaf);background:#7abf9e26;border:1px solid #7abf9e4d}.drill-done{text-align:center;padding:40px 20px}.drill-done h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:12px;font-size:24px;font-weight:500}.drill-score-row{justify-content:center;gap:20px;margin:20px 0;display:flex}.drill-score-item{text-align:center}.drill-score-num{font-family:var(--font-mono);font-size:28px;font-weight:500;line-height:1}.drill-score-num.good{color:var(--accent-leaf)}.drill-score-num.ok{color:var(--accent-warm)}.drill-score-num.bad{color:#e57373}.drill-score-label{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.06em;margin-top:4px;font-size:11px}.quiz-setup{text-align:center;padding:20px 0}.quiz-setup h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:16px;font-size:22px;font-weight:500}.quiz-mode-picker{flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:20px;display:flex}.quiz-mode-card{background:var(--paper);border:2px solid var(--rule);border-radius:var(--radius-lg);cursor:pointer;text-align:left;max-width:220px;padding:16px 20px;transition:border-color .15s,box-shadow .15s}.quiz-mode-card:hover{border-color:var(--accent-warm)}.quiz-mode-card.selected{border-color:var(--accent-warm);box-shadow:0 0 0 3px #ff996626}.quiz-mode-card h3{color:var(--ink);margin-bottom:6px;font-size:14px;font-weight:600}.quiz-mode-card p{color:var(--ink-soft);font-size:12px;line-height:1.5}.quiz-progress{align-items:center;gap:10px;margin-bottom:16px;display:flex}.quiz-progress-bar{background:var(--soft);border-radius:2px;flex:1;height:4px;overflow:hidden}.quiz-progress-fill{background:var(--accent-rose);border-radius:2px;height:100%;transition:width .4s}.quiz-progress-label{color:var(--ink-faint);white-space:nowrap;font-size:11px;font-family:var(--font-mono)}.quiz-question{font-family:var(--font-serif);color:var(--ink-soft);background:var(--softer);border-radius:var(--radius-md);border-left:3px solid var(--accent-rose);margin-bottom:16px;padding:14px 16px;font-size:15.5px;font-style:italic;line-height:1.5}.quiz-options{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.quiz-option{background:var(--paper);border:1.5px solid var(--rule);border-radius:var(--radius-md);color:var(--ink);cursor:pointer;text-align:left;width:100%;padding:12px 16px;font-family:inherit;font-size:13px;line-height:1.4;transition:border-color .15s,background .15s}.quiz-option:hover:not(:disabled){border-color:var(--accent-warm);background:var(--soft)}.quiz-option.correct{border-color:var(--accent-leaf);color:var(--accent-leaf);background:#7abf9e1a}.quiz-option.wrong{color:#e57373;background:#e5737314;border-color:#e57373}.quiz-option code{font-family:var(--font-mono);color:inherit;white-space:pre-wrap;margin-top:4px;font-size:11.5px;display:block}.quiz-result{border-radius:var(--radius-md);margin-bottom:14px;padding:12px 14px;font-size:13px;line-height:1.5;animation:.25s fadeIn}.quiz-result.correct-result{color:var(--accent-leaf);background:#7abf9e1f;border:1px solid #7abf9e4d}.quiz-result.wrong-result{color:var(--ink-soft);background:#e5737314;border:1px solid #e5737340}.quiz-result strong{margin-bottom:4px;font-size:14px;display:block}.quiz-result .distractor-notes{color:var(--ink-faint);margin-top:8px;font-size:12px}.quiz-result .distractor-notes p{margin-top:4px}.next-btn{background:var(--accent-warm);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;width:100%;padding:11px;font-family:inherit;font-size:13px;font-weight:600;transition:opacity .15s}.next-btn:hover{opacity:.85}.quiz-done{text-align:center;padding:40px 20px}.quiz-done h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:8px;font-size:24px;font-weight:500}.quiz-accuracy{font-size:48px;font-family:var(--font-mono);color:var(--accent-warm);margin:16px 0 4px;font-weight:500}.quiz-accuracy-label{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.08em;font-size:12px}.drill-answer-input{background:var(--softer);border:1px solid var(--rule);border-radius:var(--radius-md);width:100%;font-family:var(--font-mono);color:var(--ink);resize:vertical;min-height:80px;margin-top:12px;padding:10px 12px;font-size:13px;line-height:1.55;transition:border-color .15s}.drill-answer-input::placeholder{color:var(--ink-faint);font-style:italic;font-family:var(--font-sans)}.drill-answer-input:focus{border-color:var(--accent-warm);outline:none}.drill-user-answer{background:var(--softer);border:1px solid var(--rule);border-radius:var(--radius-md);font-family:var(--font-mono);color:var(--ink-soft);white-space:pre-wrap;margin-bottom:10px;padding:10px 12px;font-size:12.5px;line-height:1.55}.autograde{border-radius:var(--radius-md);border:1px solid var(--rule);background:var(--soft);margin-bottom:12px;padding:10px 12px;animation:.2s fadeIn}.autograde-header{align-items:baseline;gap:8px;margin-bottom:6px;display:flex}.autograde-pct{font-family:var(--font-mono);color:var(--accent-warm);font-size:20px;font-weight:600}.autograde-sub{color:var(--ink-faint);font-size:11px}.autograde-missed-label{letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:5px;font-size:10px;font-weight:700}.autograde-terms{flex-wrap:wrap;gap:4px;display:flex}.autograde-term{font-family:var(--font-mono);border-radius:var(--radius-pill);color:#e57373;background:#e573731f;border:1px solid #e5737340;padding:2px 7px;font-size:11px}.autograde-perfect{color:var(--accent-leaf);font-size:12px;font-weight:600}.scroll-to-top{background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius-pill);cursor:pointer;opacity:0;pointer-events:none;width:44px;height:54px;box-shadow:0 4px 16px var(--shadow);z-index:100;justify-content:center;align-items:center;padding:0;transition:opacity .35s,transform .35s,background .2s;display:flex;position:fixed;top:50%;left:calc(50% - 380px);transform:translateY(-50%)translate(-8px)}.scroll-to-top.visible{opacity:.85;pointer-events:auto;animation:3s ease-in-out infinite scrollFloatArrow;transform:translateY(-50%)translate(0)}.scroll-to-top:hover{opacity:1;background:var(--soft)}.scroll-to-top:focus-visible{outline:2px solid var(--accent-warm);outline-offset:3px}@keyframes scrollFloatArrow{0%,to{transform:translateY(-50%)}50%{transform:translateY(calc(-50% - 4px))}}@media (width<=1024px){.scroll-to-top{inset:auto 24px 24px auto;transform:translateY(8px)}.scroll-to-top.visible{transform:translateY(0)}@keyframes scrollFloatArrow{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}}@media (width<=480px){.scroll-to-top{width:38px;height:46px;bottom:16px;right:16px}.scroll-to-top svg{width:24px;height:32px}}.onboarding-overlay{z-index:1000;background:#000000a6;justify-content:center;align-items:center;padding:20px;animation:.25s fadeIn;display:flex;position:fixed;inset:0;overflow-y:auto}.onboarding-modal{background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius-lg);width:100%;max-width:540px;max-height:calc(100vh - 40px);box-shadow:0 12px 40px var(--shadow);color:var(--ink);padding:28px 30px;overflow-y:auto}.onboarding-modal h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:8px;font-size:24px;font-weight:500}.onboarding-lede{color:var(--ink-soft);margin-bottom:20px;font-size:14px;line-height:1.6}.onboarding-tiers{flex-direction:column;gap:10px;margin-bottom:20px;display:flex}.ob-tier{background:var(--softer);border-radius:var(--radius-md);border:1px solid var(--rule);align-items:stretch;gap:12px;padding:10px 12px;display:flex}.ob-tier-strip{border-radius:2px;flex:0 0 4px}.ob-tier strong{color:var(--ink);margin-bottom:2px;font-size:13px;display:block}.ob-tier p{color:var(--ink-soft);font-size:12.5px;line-height:1.45}.onboarding-modes{margin-bottom:16px}.onboarding-modes strong{color:var(--ink);margin-bottom:6px;font-size:13px;display:block}.onboarding-modes ul{color:var(--ink-soft);font-size:13px;line-height:1.7;list-style:none}.onboarding-modes b{color:var(--accent-warm);font-weight:600}.onboarding-card-id{color:var(--ink-faint);margin-bottom:18px;font-size:12px;line-height:1.5}.onboarding-card-id code{font-family:var(--font-mono);background:var(--softer);color:var(--accent-warm);border-radius:4px;padding:1px 5px;font-size:11px}.onboarding-dismiss{width:100%;margin-top:4px}.onboarding-amy{text-align:center;font-family:var(--font-serif);color:var(--accent-rose);letter-spacing:.04em;opacity:.75;margin-top:14px;font-size:12px;font-style:italic}.ws-home{padding:8px 0}.ws-header-row{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.ws-header-row h2{font-family:var(--font-serif);color:var(--ink);font-size:22px;font-weight:500}.ws-new-btn{padding:8px 16px;font-size:13px}.ws-lede{color:var(--ink-soft);margin-bottom:18px;font-size:13px;line-height:1.6}.ws-list{flex-direction:column;gap:8px;list-style:none;display:flex}.ws-list-item{background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius-md);padding:12px 14px}.ws-list-name{font-family:var(--font-serif);color:var(--ink);font-size:15px;font-weight:500}.ws-list-meta{color:var(--ink-faint);margin-top:2px;font-size:11px}.ws-list-actions{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.ws-list-actions button{border:1px solid var(--rule);background:var(--soft);color:var(--ink);border-radius:var(--radius-sm);cursor:pointer;padding:4px 10px;font-family:inherit;font-size:11.5px}.ws-list-actions button:hover{background:var(--rule)}.ws-list-actions .ws-delete:hover{color:#e57373;background:#e5737326;border-color:#e573734d}.ws-toolbar{align-items:center;gap:8px;margin-bottom:14px;display:flex}.ws-back-btn{background:var(--soft);border:1px solid var(--rule);color:var(--ink-soft);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;padding:6px 10px;font-family:inherit;font-size:12px}.ws-back-btn:hover{background:var(--rule)}.ws-name-input{font-family:var(--font-serif);background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius-md);color:var(--ink);flex:1;padding:8px 12px;font-size:16px}.ws-name-input:focus{outline:2px solid var(--accent-warm)}.ws-save-btn{padding:8px 16px;font-size:13px}.ws-field-label{letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin:14px 0 6px;font-size:10px;font-weight:700;display:block}.ws-problem,.ws-notes,.ws-code{background:var(--softer);border:1px solid var(--rule);border-radius:var(--radius-md);width:100%;font-family:var(--font-mono);color:var(--ink);resize:vertical;padding:10px 12px;font-size:13px;line-height:1.55;transition:border-color .15s}.ws-problem,.ws-notes{font-family:var(--font-sans)}.ws-problem:focus,.ws-notes:focus,.ws-code:focus{border-color:var(--accent-warm);outline:none}.ws-step{background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius-lg);margin-top:14px;padding:14px}.ws-step header{font-family:var(--font-serif);color:var(--ink);align-items:center;gap:8px;margin-bottom:10px;font-size:15px;font-weight:500;display:flex}.ws-step-num{background:var(--accent-warm);color:#fff;width:22px;height:22px;font-size:12px;font-weight:600;font-family:var(--font-mono);border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.ws-tier-tag{font-family:var(--font-mono);letter-spacing:.06em;border-radius:var(--radius-sm);margin-left:auto;padding:2px 6px;font-size:9.5px;font-weight:600}.ws-tier-tag.t1{color:var(--accent-leaf);background:#7abf9e2e}.ws-tier-tag.t2{color:var(--accent-warm);background:#ff99662e}.ws-tier-tag.t3{color:var(--accent-rose);background:#d4a0c02e}.ws-typeahead{background:var(--softer);border:1px solid var(--rule);border-radius:var(--radius-md);width:100%;color:var(--ink);padding:8px 12px;font-family:inherit;font-size:13px}.ws-typeahead:focus{outline:2px solid var(--accent-warm)}.ws-typeahead-results{flex-direction:column;gap:4px;margin-top:4px;display:flex}.ws-typeahead-results:empty{display:none}.ws-typeahead-result{background:var(--softer);border:1px solid var(--rule);border-radius:var(--radius-sm);color:var(--ink);cursor:pointer;text-align:left;justify-content:space-between;align-items:center;padding:8px 10px;font-family:inherit;font-size:12.5px;display:flex}.ws-typeahead-result:hover{background:var(--soft);border-color:var(--accent-warm)}.ws-typeahead-front{flex:1;line-height:1.4}.ws-typeahead-id{font-family:var(--font-mono);color:var(--ink-faint);white-space:nowrap;margin-left:8px;font-size:10px}.ws-suggested{margin-bottom:10px}.ws-suggested-label{text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint);margin-bottom:5px;font-size:10px;font-weight:600;display:block}.ws-suggested-row{flex-wrap:wrap;gap:4px;display:flex}.ws-suggested-chip{background:var(--softer);border:1px dashed var(--rule);color:var(--ink-soft);border-radius:var(--radius-pill);cursor:pointer;padding:4px 10px;font-family:inherit;font-size:11.5px}.ws-suggested-chip:hover{background:var(--soft)}.ws-suggested-chip.picked{border-color:var(--accent-warm);color:var(--accent-warm);background:#ff996626;border-style:solid}.ws-pick,.ws-picks{flex-direction:column;gap:6px;margin-top:8px;display:flex}.ws-pick:empty,.ws-picks:empty{display:none}.ws-pick-card{background:var(--softer);border:1px solid var(--rule);border-radius:var(--radius-md);padding:10px 12px}.ws-pick-head{align-items:center;gap:8px;margin-bottom:4px;display:flex}.ws-pick-name{color:var(--ink);flex:1;font-size:13px;font-weight:500;line-height:1.4}.ws-pick-id{font-family:var(--font-mono);color:var(--ink-faint);font-size:10px}.ws-pick-remove{color:var(--ink-faint);cursor:pointer;background:0 0;border:none;padding:0 4px;font-size:18px;line-height:1}.ws-pick-remove:hover{color:#e57373}.ws-pick-gist{color:var(--ink-soft);font-size:12.5px;line-height:1.5}.ws-pick-code{font-family:var(--font-mono);background:var(--bg);border-radius:var(--radius-sm);color:var(--ink);margin-top:6px;padding:8px 10px;font-size:11.5px;line-height:1.55;overflow-x:auto}.ws-bottom-actions{gap:8px;margin-top:16px;display:flex}.ws-export-btn{background:var(--soft);border:1px solid var(--rule);color:var(--ink);border-radius:var(--radius-md);cursor:pointer;flex:1;padding:10px;font-family:inherit;font-size:13px;font-weight:600}.ws-export-btn:hover{background:var(--rule)}.ws-save-btn-2{flex:1}#auth-overlay{-webkit-backdrop-filter:blur(4px);z-index:1000;background:#0000008c;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.auth-modal{background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius-lg,12px);width:100%;max-width:360px;padding:28px 28px 24px;animation:.18s forwards authModalIn;position:relative;box-shadow:0 20px 60px #00000059}.auth-modal-sm{max-width:300px}@keyframes authModalIn{0%{opacity:0;transform:scale(.94)translateY(8px)}to{opacity:1;transform:scale(1)translateY(0)}}.auth-close{color:var(--ink-faint);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-family:inherit;font-size:15px;transition:color .15s,background .15s;position:absolute;top:12px;right:14px}.auth-close:hover{color:var(--ink);background:var(--soft)}.auth-title{font-family:var(--font-serif);color:var(--ink);margin-bottom:18px;font-size:20px;font-weight:500}.auth-sub{color:var(--ink-soft);margin-bottom:18px;font-size:13px;line-height:1.55}.auth-form{flex-direction:column;gap:13px;display:flex}.auth-label{color:var(--ink-soft);letter-spacing:.04em;text-transform:uppercase;flex-direction:column;gap:5px;font-size:12px;font-weight:600;display:flex}.auth-input{background:var(--bg);border:1px solid var(--rule);border-radius:var(--radius-sm);width:100%;color:var(--ink);padding:8px 10px;font-family:inherit;font-size:14px;transition:border-color .15s}.auth-input:focus{border-color:var(--accent-warm);outline:none}.auth-error{color:#e07070;border-radius:var(--radius-sm);background:#e070701a;border:1px solid #e070704d;padding:6px 10px;font-size:12.5px}.auth-error.hidden{display:none}.auth-submit{background:var(--accent-warm);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;width:100%;margin-top:4px;padding:10px;font-family:inherit;font-size:14px;font-weight:600;transition:background .18s,opacity .18s}.auth-submit:hover:not(:disabled){background:var(--accent-warm-hover,#ffaa7a)}.auth-submit:disabled{opacity:.55;cursor:not-allowed}.auth-submit-outline{background:var(--soft);color:var(--ink);border:1px solid var(--rule)}.auth-submit-outline:hover:not(:disabled){background:var(--rule)}.auth-switch{color:var(--ink-faint);text-align:center;margin-top:14px;font-size:12.5px}.auth-switch-btn{color:var(--accent-warm);cursor:pointer;font-size:inherit;text-underline-offset:2px;background:0 0;border:none;padding:0;font-family:inherit;text-decoration:underline}.auth-switch-btn:hover{color:var(--accent-warm-hover,#ffaa7a)}.auth-actions{gap:8px;margin-top:6px;display:flex}.auth-actions .auth-submit{margin-top:0}.progress-loading{text-align:center;color:var(--ink-faint);padding:48px 0;font-size:14px;font-style:italic}.progress-gate{text-align:center;max-width:400px;margin:0 auto;padding:48px 20px}.progress-gate-icon{color:var(--ink-faint);opacity:.5;margin-bottom:16px;font-size:32px}.progress-gate h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:10px;font-size:20px;font-weight:500}.progress-gate p{color:var(--ink-soft);margin-bottom:8px;font-size:13.5px;line-height:1.6}.progress-gate-sub{color:var(--ink-faint);font-size:12.5px}.progress-header{flex-wrap:wrap;gap:10px;margin-bottom:24px;display:flex}.progress-stat{background:var(--card-bg);border:1px solid var(--rule);border-radius:var(--radius-md);flex-direction:column;flex:1;gap:3px;min-width:80px;padding:12px 14px;display:flex}.progress-stat-due{background:#ff99660f;border-color:#ff996659}.progress-stat-num{font-family:var(--font-mono);color:var(--ink);font-size:22px;font-weight:600;line-height:1}.progress-stat-due .progress-stat-num{color:var(--accent-warm)}.progress-stat-label{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.06em;font-size:11px}.progress-table-wrap{border:1px solid var(--rule);border-radius:var(--radius-md);margin-bottom:16px;overflow-x:auto}.progress-table{border-collapse:collapse;width:100%;font-size:13px}.progress-table thead{background:var(--soft)}.progress-table th{text-align:left;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.06em;white-space:nowrap;padding:9px 12px;font-size:11px;font-weight:600}.progress-th-num{text-align:right}.progress-th-bar{min-width:120px}.progress-row{border-top:1px solid var(--rule);cursor:pointer;transition:background .12s}.progress-row:hover{background:var(--soft)}.progress-row-unseen{opacity:.55}.progress-row td{vertical-align:middle;padding:9px 12px}.progress-cat{min-width:120px}.progress-cat-name{color:var(--ink);font-weight:600;display:block}.progress-cat-code{font-family:var(--font-mono);color:var(--ink-faint);margin-top:1px;font-size:10.5px;display:block}.progress-td-num{text-align:right;font-family:var(--font-mono);color:var(--ink-soft);white-space:nowrap;font-size:12.5px}.progress-td-bar{align-items:center;gap:8px;display:flex}.progress-bar-track{background:var(--rule);border-radius:999px;flex:1;min-width:60px;height:5px;overflow:hidden}.progress-bar-fill{background:var(--accent-warm);border-radius:999px;height:100%;transition:width .3s}.progress-bar-pct{font-family:var(--font-mono);color:var(--ink-faint);text-align:right;min-width:30px;font-size:11px}.due-badge{color:var(--accent-warm);font-size:11px;font-weight:600;font-family:var(--font-mono);background:#ff996626;border:1px solid #ff99664d;border-radius:999px;padding:1px 7px;display:inline-block}.ease-good{color:#7abf9e}.ease-ok{color:var(--ink-soft)}.ease-low{color:#e07070}.progress-footnote{color:var(--ink-faint);font-size:11.5px;font-style:italic;line-height:1.5}.drill-your-block{border-bottom:1px solid var(--rule);margin-bottom:16px;padding-bottom:16px}.drill-done-pct{color:var(--ink-faint);margin-top:-8px;margin-bottom:16px;font-size:13px}.daily-banner{justify-content:center;margin-bottom:12px;transition:opacity .2s;display:flex}.daily-banner.hidden{display:none}.daily-inner{border-radius:var(--radius-pill);background:#ff996614;border:1px solid #ff996640;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;padding:6px 16px;transition:background .25s,border-color .25s;display:inline-flex}.daily-banner-done .daily-inner{background:#7abf9e14;border-color:#7abf9e4d}.daily-label{letter-spacing:.07em;text-transform:uppercase;color:var(--ink-faint);font-size:11px;font-weight:700}.daily-done{gap:8px}.daily-counts{flex-wrap:wrap;gap:5px;display:flex}.daily-chip{font-size:11.5px;font-weight:600;font-family:var(--font-mono);border-radius:999px;padding:2px 8px}.daily-chip-review{color:var(--accent-warm);background:#ff996626;border:1px solid #ff996659}.daily-chip-new{color:var(--accent-cool,#7abf9e);background:#7abf9e1a;border:1px solid #7abf9e4d}.daily-label{text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);flex-shrink:0;font-size:10.5px;font-weight:700}.daily-done-text{color:var(--accent-cool,#7abf9e);font-size:13px;font-weight:600}.daily-start{background:var(--accent-warm);color:#fff;border-radius:var(--radius-md);cursor:pointer;white-space:nowrap;border:none;flex-shrink:0;padding:4px 12px;font-family:inherit;font-size:12px;font-weight:600;transition:background .18s,transform .12s}.daily-start:hover{background:var(--accent-warm-hover,#ffaa7a);transform:translateY(-1px)}.fam-badge{letter-spacing:.06em;text-transform:uppercase;font-size:9.5px;font-weight:700;font-family:var(--font-mono);white-space:nowrap;border-radius:999px;flex-shrink:0;justify-self:start;align-items:center;padding:1px 6px;line-height:1.6;display:inline-flex}.fam-unseen{color:var(--ink-faint);border:1px solid var(--rule);background:#ffffff0d}.fam-due{color:var(--accent-warm);background:#ff996626;border:1px solid #ff996659}.fam-learning{color:#c9a84c;background:#b4965021;border:1px solid #b496504d}.fam-steady,.fam-solid,.fam-ok{color:var(--accent-cool,#7abf9e);background:#7abf9e1a;border:1px solid #7abf9e40}.fam-strong{color:var(--accent-cool,#7abf9e);background:#7abf9e2e;border:1px solid #7abf9e66;font-weight:800}.browse-row-controls{align-items:center;gap:8px;margin-bottom:8px;display:flex}.browse-row-controls .browse-row-filters{flex:1}.browse-row-controls .sort-control{flex-shrink:0;margin-bottom:0}.browse-row-filters{margin-bottom:6px}.status-filters{flex-wrap:wrap;justify-content:flex-start;gap:5px;margin-bottom:0;display:flex}.status-btn{border:1px solid var(--rule);background:var(--soft);color:var(--ink-soft);cursor:pointer;letter-spacing:.03em;border-radius:999px;padding:4px 11px;font-family:inherit;font-size:11.5px;font-weight:600;transition:background .15s,color .15s,border-color .15s}.status-btn:hover{background:var(--rule);color:var(--ink)}.status-btn.active{background:var(--accent-warm);color:#fff;border-color:var(--accent-warm)}.sort-control{justify-content:flex-end;align-items:center;gap:6px;margin-bottom:8px;display:flex}.sort-label{color:var(--ink-faint);align-items:center;gap:6px;font-size:11.5px;font-weight:500;display:flex}.sort-select{background:var(--soft);border:1px solid var(--rule);color:var(--ink-soft);border-radius:var(--radius-sm);cursor:pointer;padding:4px 8px;font-family:inherit;font-size:11.5px}.sort-select:focus{border-color:var(--accent-warm);outline:none}.stats-seen{color:var(--accent-cool,#7abf9e);font-weight:500}.quiz-option-diff{text-align:left;flex-direction:column;align-items:flex-start;gap:3px;height:auto;padding:10px 14px;display:flex}.quiz-opt-name{color:inherit;font-size:14px;font-weight:600}.quiz-opt-gist{color:var(--ink-faint);white-space:normal;font-size:11.5px;font-weight:400;line-height:1.4}.quiz-option-diff:hover .quiz-opt-gist,.quiz-option-diff.correct .quiz-opt-gist,.quiz-option-diff.wrong .quiz-opt-gist{color:inherit;opacity:.8}.quiz-correct-answer{border-radius:var(--radius-sm);background:#7abf9e14;border:1px solid #7abf9e33;flex-direction:column;gap:3px;margin-top:6px;padding:8px 10px;display:flex}.quiz-correct-label{text-transform:uppercase;letter-spacing:.06em;color:var(--accent-cool,#7abf9e);font-size:10.5px;font-weight:600}.drill-start-row{gap:10px;margin-top:16px;display:flex}.drill-session-btn{background:var(--card-bg);border:1px solid var(--rule);border-radius:var(--radius-md);cursor:pointer;flex-direction:column;flex:1;align-items:center;gap:4px;padding:14px 12px;font-family:inherit;transition:background .15s,border-color .15s,transform .1s;display:flex}.drill-session-btn:hover:not(:disabled){background:var(--soft);border-color:var(--accent-warm);transform:translateY(-1px)}.drill-session-btn:disabled{opacity:.4;cursor:not-allowed}.drill-btn-label{color:var(--ink);font-size:13px;font-weight:600}.drill-btn-count{font-size:11.5px;font-family:var(--font-mono);color:var(--ink-faint)}.drill-session-btn:not(:disabled) .drill-btn-count{color:var(--accent-warm)}.progress-expand-cell{vertical-align:middle;width:28px;padding:9px 6px 9px 12px!important}.progress-expand-btn{cursor:pointer;color:var(--ink-faint);background:0 0;border:none;border-radius:3px;padding:2px 4px;font-size:10px;line-height:1;transition:color .15s,background .15s}.progress-expand-btn:hover{color:var(--ink);background:var(--rule)}.progress-expand-row{background:var(--soft)}.progress-expand-row.hidden{display:none}.progress-expand-td{border-top:none!important;padding:0!important}.progress-card-list{flex-direction:column;gap:0;padding:8px 16px 12px;display:flex}.progress-card-header,.progress-card-item{grid-template-columns:auto 1fr 58px 44px 90px;align-items:center;column-gap:8px;display:grid}.progress-card-header{text-transform:uppercase;letter-spacing:.07em;color:var(--ink-faint);border-bottom:1px solid var(--rule);margin-bottom:3px;padding:0 0 5px;font-size:10px;font-weight:600}.progress-card-header .pch-right{text-align:right}.progress-card-item{border-bottom:1px solid #0000;padding:4px 0;font-size:12.5px}.progress-card-item:last-child{border-bottom:none}.progress-card-unseen{opacity:.5}.progress-card-preview-btn.progress-card-front{font-family:inherit;font-size:inherit;color:var(--ink-soft);text-overflow:ellipsis;white-space:nowrap;cursor:pointer;text-align:left;text-underline-offset:2px;background:0 0;border:none;min-width:0;padding:0;-webkit-text-decoration:underline #0000;text-decoration:underline #0000;transition:color .15s,text-decoration-color .15s;overflow:hidden}.progress-card-preview-btn.progress-card-front:hover{color:var(--accent-warm);-webkit-text-decoration-color:var(--accent-warm);text-decoration-color:var(--accent-warm)}.progress-card-col{color:var(--ink-faint);font-size:11px;font-family:var(--font-mono);text-align:right;white-space:nowrap}.progress-no-cards{color:var(--ink-faint);padding:8px 12px;font-size:12.5px;font-style:italic}.card-preview-overlay{z-index:900;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.card-preview-overlay.hidden{display:none}.card-preview-backdrop{-webkit-backdrop-filter:blur(2px);background:#0000008c;position:absolute;inset:0}.card-preview-modal{background:var(--paper);border-radius:var(--radius-lg);border:1px solid var(--rule);width:100%;max-width:600px;max-height:85vh;padding:20px;animation:.18s ease-out previewFadeIn;position:relative;overflow-y:auto;box-shadow:0 24px 80px #00000059}@keyframes previewFadeIn{0%{opacity:0;transform:scale(.97)translateY(8px)}to{opacity:1;transform:scale(1)translateY(0)}}.card-preview-modal .card{box-shadow:none;border:none;margin-top:22px;margin-bottom:0;padding:0}.card-preview-modal .card-tier-strip{display:none}.card-preview-close{background:var(--soft);border:1px solid var(--rule);color:var(--ink-faint);cursor:pointer;z-index:1;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-family:inherit;font-size:18px;line-height:1;transition:background .15s,color .15s;display:flex;position:absolute;top:10px;right:14px}.card-preview-close:hover{background:var(--rule);color:var(--ink)}.drill-session-btn .drill-btn-count.drill-done-count{color:var(--accent-cool,#7abf9e)}