:root{--bg:#0d0e14;--surface:#121319;--surface-low:#1b1b22;--surface-2:#1f1f26;--surface-3:#292930;--surface-4:#34343b;--glass:#1e293bb3;--glass-border:#47556980;--glass-blur:16px;--border:#34343b;--border-strong:#454653;--outline:#908f9e;--text:#e4e1eb;--text-secondary:#c6c5d5;--text-faint:#908f9e;--primary:#bdc2ff;--primary-strong:#818cf8;--on-primary:#0f172a;--primary-dim:#818cf81a;--primary-border:#818cf833;--accent:#38bdf8;--accent-dim:#38bdf81a;--danger:#ffb4ab;--danger-dim:#ffb4ab1a;--success:#34d399;--success-dim:#34d3991a;--warning:#f7bd3e;--warning-dim:#f7bd3e1a;--radius:.5rem;--radius-lg:1rem;--radius-xl:1.5rem;--shadow:0 2px 12px #0000004d;--shadow-card:0 4px 20px #0000004d;--shadow-modal:0 24px 64px #0000004d;--glow-primary:0 0 40px #818cf81a;--font:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, monospace}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font);color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.5}#svelte{height:100%}.material-symbols-outlined{letter-spacing:normal;text-transform:none;white-space:nowrap;word-wrap:normal;font-variation-settings:"FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;-webkit-font-feature-settings:"liga";font-feature-settings:"liga";-webkit-user-select:none;user-select:none;direction:ltr;font-family:Material Symbols Outlined;font-size:20px;font-style:normal;font-weight:400;line-height:1;display:inline-block}.material-symbols-outlined.filled{font-variation-settings:"FILL" 1, "wght" 400, "GRAD" 0, "opsz" 24}.page-title{letter-spacing:-.01em;color:var(--text);margin-bottom:18px;font-size:1.75rem;font-weight:600;line-height:1.3}.app-shell{flex-direction:column;height:100%;display:flex}.app-header{flex-shrink:0}.page-content{flex:1;width:100%;max-width:640px;margin:0 auto;padding:24px 16px;overflow-y:auto}.page-content.page-wide{max-width:960px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#475569;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#64748b}.navbar{background:var(--surface);border-bottom:1px solid var(--border-strong);justify-content:space-between;align-items:center;height:56px;padding:0 24px;display:flex}.navbar-brand{letter-spacing:-.01em;color:var(--text);font-size:1.05rem;font-weight:800;text-decoration:none}.navbar-end{align-items:center;gap:8px;display:flex}.navbar-logout{border:1px solid var(--border-strong);border-radius:var(--radius);color:var(--text-secondary);cursor:pointer;background:0 0;padding:4px 10px;font-size:.78rem}.navbar-logout:hover{background:var(--surface-2);color:var(--text);border-color:var(--outline)}button{border-radius:var(--radius);font-family:var(--font);letter-spacing:.03em;cursor:pointer;white-space:nowrap;border:none;justify-content:center;align-items:center;gap:6px;padding:9px 16px;font-size:.82rem;font-weight:600;transition:background .2s ease-in-out,border-color .2s ease-in-out,color .2s ease-in-out,opacity .15s;display:inline-flex}button:active{transform:scale(.98)}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible{outline:2px solid var(--primary-strong);outline-offset:2px}.btn-primary{background:var(--primary-strong);color:var(--on-primary)}.btn-primary:hover:not(:disabled){background:var(--primary)}.btn-secondary{background:var(--surface-4);color:var(--text);border:1px solid var(--border-strong)}.btn-secondary:hover:not(:disabled){background:var(--surface-3);border-color:var(--outline)}.btn-danger{color:var(--danger);border:1px solid var(--border-strong);background:0 0;padding:5px 11px;font-size:.8rem}.btn-danger:hover:not(:disabled){border-color:var(--danger);background:var(--danger-dim)}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border-strong);background:0 0;padding:5px 11px;font-size:.8rem}.btn-ghost:hover{background:var(--surface-2);color:var(--text)}.btn-full{width:100%}.import-banner-success,.import-banner-error,.import-banner-warning{border-radius:var(--radius);align-items:center;margin-top:10px;padding:9px 13px;font-size:.84rem;display:flex}.import-banner-success{background:var(--success-dim);color:var(--success);border:1px solid #34d3994d}.import-banner-error{background:var(--danger-dim);color:var(--danger);border:1px solid #ffb4ab4d}.import-banner-warning{background:var(--warning-dim);color:var(--warning);border:1px solid #f7bd3e4d;margin-top:6px}.rating-row{grid-template-columns:repeat(4,1fr);gap:10px;margin-top:24px;display:grid}.btn-rate{border-radius:var(--radius);flex-direction:column;gap:2px;padding:12px 8px;font-size:.85rem;font-weight:700}.btn-rate .rate-label{opacity:.85;font-size:.68rem;font-weight:500}.btn-rate-1{background:var(--danger-dim);color:var(--danger);border:1px solid #ffb4ab59}.btn-rate-1:hover:not(:disabled){background:#ffb4ab33}.btn-rate-2{background:var(--warning-dim);color:var(--warning);border:1px solid #f7bd3e59}.btn-rate-2:hover:not(:disabled){background:#f7bd3e33}.btn-rate-3{background:var(--success-dim);color:#6ee7b7;border:1px solid #34d39959}.btn-rate-3:hover:not(:disabled){background:#34d39933}.btn-rate-4{background:var(--primary-dim);border:1px solid var(--primary-border);color:var(--primary)}.btn-rate-4:hover:not(:disabled){background:#818cf833}input[type=text],input[type=email],input[type=password],input:not([type]){border:1px solid var(--border-strong);border-radius:var(--radius);width:100%;font-family:var(--font);color:var(--text);background:var(--surface);outline:none;padding:9px 12px;font-size:.9rem;transition:border-color .2s ease-in-out,box-shadow .2s ease-in-out}input:focus{border-color:var(--primary-strong);box-shadow:0 0 0 3px var(--primary-dim)}input::placeholder{color:var(--text-faint)}.card-item{background:var(--surface-low);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:8px;padding:12px 14px;transition:background .2s ease-in-out}.card-item:hover{background:var(--surface-2)}.card-item-faces{flex:1;align-items:center;gap:12px;display:flex}.card-item-front{color:var(--text);flex:1;font-size:.88rem;font-weight:600}.card-item-divider{color:var(--text-faint);font-size:1rem}.card-item-back{color:var(--text-secondary);flex:1;font-size:.85rem}.card-item-actions{gap:8px;margin-top:10px;display:flex}.flashcard{background:var(--surface-low);border:1px solid var(--border-strong);border-radius:var(--radius-lg);text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:240px;margin:24px 0;padding:40px 28px;display:flex}.flashcard-front{letter-spacing:-.01em;color:var(--text);font-size:1.75rem;font-weight:600;line-height:1.3}.flashcard-divider{background:var(--border-strong);border-radius:2px;width:48px;height:2px;margin:20px auto}.flashcard-back{color:var(--text-secondary);margin-top:4px;font-size:1.15rem;line-height:1.55}.progress-bar-track{background:var(--surface-2);border-radius:9999px;width:100%;height:4px;margin-bottom:8px;overflow:hidden}.progress-bar-fill{background:var(--primary-strong);border-radius:9999px;height:100%;transition:width .3s}.progress-label{letter-spacing:.05em;color:var(--text-faint);text-align:right;margin-bottom:4px;font-size:.72rem;font-weight:600}.back-link{letter-spacing:.05em;color:var(--text-secondary);cursor:pointer;align-items:center;gap:4px;margin-bottom:16px;font-size:.75rem;font-weight:600;text-decoration:none;transition:color .2s ease-in-out;display:inline-flex}.back-link:hover{color:var(--primary)}.empty-state{text-align:center;color:var(--text-secondary);padding:48px 24px;font-size:.92rem}.loading{text-align:center;color:var(--text-secondary);padding:48px}.login-container{background:var(--surface);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background:var(--surface-low);border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-modal);width:100%;max-width:400px;padding:36px 30px}.login-title{letter-spacing:-.02em;text-align:center;color:var(--text);margin-bottom:24px;font-size:1.75rem;font-weight:700}.tab-toggle{border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--surface);margin-bottom:24px;display:flex;overflow:hidden}.tab-btn{color:var(--text-secondary);background:0 0;border:none;border-radius:0;flex:1;padding:9px;font-size:.85rem;font-weight:600}.tab-btn.active{background:var(--primary-dim);color:var(--primary)}.form-field{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.form-field label{letter-spacing:.05em;color:var(--text-secondary);font-size:.75rem;font-weight:600}.submit-btn{background:var(--primary-strong);width:100%;color:var(--on-primary);border-radius:var(--radius);cursor:pointer;border:none;margin-top:8px;padding:11px;font-size:.92rem;font-weight:700;transition:background .2s ease-in-out}.submit-btn:hover:not(:disabled){background:var(--primary)}.success-banner{background:var(--success-dim);color:var(--success);border-radius:var(--radius);border:1px solid #34d3994d;margin-bottom:16px;padding:9px 13px;font-size:.84rem}.error-banner{background:var(--danger-dim);color:var(--danger);border-radius:var(--radius);border:1px solid #ffb4ab4d;margin-bottom:16px;padding:9px 13px;font-size:.84rem}.complete-screen{text-align:center;flex-direction:column;align-items:center;gap:12px;padding:48px 0;display:flex}.complete-icon{background:var(--success-dim);width:68px;height:68px;color:var(--success);border:1px solid #34d3994d;border-radius:9999px;justify-content:center;align-items:center;margin-bottom:8px;font-size:1.8rem;display:flex}.complete-title{letter-spacing:-.01em;color:var(--text);font-size:1.4rem;font-weight:600}.complete-subtitle{color:var(--text-secondary);font-size:.95rem}.complete-actions{flex-direction:column;gap:10px;width:100%;margin-top:16px;display:flex}.complete-story-section{flex-direction:column;align-items:center;gap:14px;width:100%;max-width:480px;margin-top:28px;display:flex}.complete-story-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);align-self:flex-start;font-size:.7rem;font-weight:600}.complete-story-words{color:var(--text-secondary);align-self:flex-start;font-size:.78rem}.complete-story-card{background:var(--surface-low);border:1px solid var(--border-strong);border-radius:var(--radius-lg);color:var(--text);width:100%;padding:18px 20px;font-size:.95rem;line-height:1.75}.complete-story-card strong{color:var(--accent);font-weight:700}.complete-story-translation{border-top:1px solid var(--border);color:var(--text-secondary);margin-top:10px;padding-top:10px;font-size:.86rem;font-style:italic;line-height:1.6}.complete-story-loading{color:var(--text-secondary);font-size:.88rem}.complete-story-btn{width:100%}.sandbox{background:var(--surface);position:fixed;inset:0;overflow:hidden}.sandbox-graph{background-color:var(--surface);background-image:radial-gradient(#ffffff1a 1px,#0000 1px);background-size:20px 20px;position:absolute;inset:56px 0 0}.sandbox-topbar{background:var(--surface);border-bottom:1px solid var(--border-strong);z-index:30;align-items:center;gap:10px;height:56px;padding:0 24px;display:flex;position:absolute;top:0;left:0;right:0}.sandbox-back{letter-spacing:.05em;color:var(--text-secondary);white-space:nowrap;cursor:pointer;flex-shrink:0;font-size:.75rem;font-weight:600;text-decoration:none;transition:color .2s ease-in-out}.sandbox-back:hover{color:var(--primary)}.sandbox-name{color:var(--text);cursor:pointer;white-space:nowrap;text-overflow:ellipsis;flex-shrink:1;max-width:220px;font-size:.95rem;font-weight:600;overflow:hidden}.sandbox-name:hover{color:var(--text-secondary)}.sandbox-name-input{background:var(--surface-2);border:1px solid var(--border-strong);border-radius:var(--radius);color:var(--text);outline:none;width:180px;padding:4px 10px;font-size:.95rem;font-weight:600}.sandbox-name-input:focus{border-color:var(--primary-strong)}.sandbox-topbar-spacer{flex:1}.sandbox-topbar-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.sandbox-btn{border:1px solid var(--border-strong);border-radius:var(--radius);color:var(--text-secondary);letter-spacing:.05em;cursor:pointer;white-space:nowrap;background:0 0;padding:4px 11px;font-size:.75rem;font-weight:600;transition:background .2s ease-in-out,color .2s ease-in-out,border-color .2s ease-in-out}.sandbox-btn:hover{background:var(--surface-2);color:var(--text);border-color:var(--outline)}.sandbox-btn:disabled{opacity:.45;cursor:not-allowed}.sandbox-btn-primary{background:var(--primary-strong);color:var(--on-primary);border-color:#0000}.sandbox-btn-primary:hover{background:var(--primary);color:var(--on-primary)}.sandbox-btn-active{background:var(--primary-dim);border-color:var(--primary-strong);color:var(--primary)}.sandbox-overlay{z-index:20;background:#0d0e14b3;justify-content:center;align-items:center;display:flex;position:absolute;inset:56px 0 0}.sandbox-progress-pill{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);letter-spacing:.05em;color:var(--text-secondary);border-radius:9999px;padding:9px 18px;font-size:.78rem;font-weight:600}.embed-warning-banner{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur));border-radius:var(--radius);color:var(--warning);z-index:25;border:1px solid #f7bd3e66;align-items:center;gap:10px;max-width:480px;padding:9px 14px;font-size:.8rem;display:flex;position:absolute;bottom:16px;left:50%;transform:translate(-50%)}.embed-warning-text{flex:1}.sandbox-panel{background:var(--bg);border-left:1px solid var(--border-strong);z-index:25;width:300px;padding:14px;transition:transform .22s;position:absolute;top:56px;bottom:0;right:0;overflow-y:auto}.sandbox-panel-hidden{transform:translate(100%)}.sandbox-panel-header{color:var(--text);justify-content:space-between;align-items:center;margin-bottom:14px;font-size:.9rem;font-weight:600;display:flex}.sandbox-card-strip{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur));border-top:1px solid var(--glass-border);z-index:25;align-items:center;gap:10px;padding:12px 16px;transition:right .22s;display:flex;position:absolute;bottom:0;left:0;right:0}.sandbox-card-strip-narrow{right:300px}.sandbox-strip-front{color:#fff;white-space:nowrap;text-overflow:ellipsis;max-width:180px;font-size:.9rem;font-weight:600;overflow:hidden}.sandbox-strip-sep{color:var(--text-faint);flex-shrink:0}.sandbox-strip-back{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:.85rem;overflow:hidden}.sandbox-strip-actions{flex-shrink:0;gap:6px;display:flex}.sidebar-search{margin-bottom:10px;position:relative}.sidebar-search input{background:var(--surface-2);padding-right:30px}.sidebar-search-clear{color:var(--text-faint);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 5px;font-size:.7rem;line-height:1;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.sidebar-search-clear:hover{color:var(--text);background:var(--surface-3)}.sidebar-search-empty{color:var(--text-faint);text-align:center;padding:20px 0;font-size:.8rem}.add-card-modal-backdrop{z-index:50;background:#12131973;justify-content:center;align-items:center;animation:.15s acm-fade;display:flex;position:absolute;inset:0}.add-card-modal-card{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-modal);flex-direction:column;gap:18px;width:460px;max-width:calc(100vw - 48px);padding:24px;animation:.18s acm-scale;display:flex}.add-card-modal-header{color:#fff;justify-content:space-between;align-items:center;font-size:.95rem;font-weight:600;display:flex}.add-card-modal-face{flex-direction:column;gap:7px;display:flex}.add-card-modal-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);font-size:.7rem;font-weight:600}.add-card-modal-divider{background:var(--glass-border);width:100%;height:1px}.add-card-modal-error{color:var(--danger);font-size:.8rem}.add-card-modal-actions{justify-content:flex-end;gap:8px;display:flex}.story-modal-backdrop{z-index:60;background:#12131973;justify-content:center;align-items:center;animation:.15s acm-fade;display:flex;position:absolute;inset:0}.story-modal-card{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-modal);flex-direction:column;gap:15px;width:min(550px,90vw);max-height:72vh;padding:24px;animation:.18s acm-scale;display:flex;overflow-y:auto}.story-modal-header{letter-spacing:-.01em;color:#fff;justify-content:space-between;align-items:center;font-size:1.35rem;font-weight:700;display:flex}.story-modal-words{flex-wrap:wrap;gap:6px;display:flex}.story-word-chip{background:var(--primary-dim);border:1px solid var(--primary-border);color:var(--primary-strong);border-radius:9999px;padding:2px 10px;font-size:.74rem;font-weight:600}.story-modal-text{color:#ffffffe6;cursor:pointer;font-size:1.02rem;line-height:1.75}.story-modal-text strong{color:var(--accent);font-weight:700}.story-modal-loading{color:var(--text-secondary);text-align:center;padding:24px 0;font-size:.88rem}.story-modal-error{color:var(--danger);text-align:center;padding:12px 0;font-size:.88rem}.story-modal-divider{background:var(--glass-border);width:100%;height:1px}.story-modal-translation{color:var(--text-secondary);font-size:.86rem;font-style:italic;line-height:1.6}.story-modal-regen{letter-spacing:.05em;color:#fff;border-radius:var(--radius);background:#ffffff0d;border:1px solid #fff3;align-self:stretch;padding:8px 11px;font-size:.75rem;font-weight:600}.story-modal-regen:hover:not(:disabled){background:#ffffff1a}.word-lookup-panel{border:1px solid var(--glass-border);border-radius:var(--radius);background:#ffffff0a;align-items:center;gap:10px;padding:10px 13px;display:flex}.word-lookup-content{flex-wrap:wrap;flex:1;align-items:center;gap:8px;min-width:0;display:flex}.word-lookup-word{color:var(--accent);white-space:nowrap;font-size:.92rem;font-weight:700}.word-lookup-arrow{color:var(--text-faint)}.word-lookup-translation{color:#fff;font-size:.9rem}.word-lookup-loading{color:var(--text-secondary);letter-spacing:2px;font-size:1rem}.word-lookup-lemma{width:100%;color:var(--text-secondary);margin-top:2px;font-size:.75rem;font-style:italic}.word-lookup-actions{flex-shrink:0;align-items:center;gap:6px;display:flex}.word-lookup-add{padding:4px 10px;font-size:.78rem}.word-lookup-added{color:var(--success);white-space:nowrap;font-size:.78rem}.word-lookup-dismiss{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px 6px;font-size:1rem;line-height:1}.word-lookup-dismiss:hover{background:#ffffff14}.select-action-bar{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur));border-top:1px solid var(--glass-border);z-index:30;align-items:center;gap:10px;padding:12px 16px;display:flex;position:absolute;bottom:0;left:0;right:0}.select-action-bar-narrow{right:300px}.select-action-count{color:var(--text-secondary);flex:1;font-size:.82rem}.pro-badge{text-transform:uppercase;letter-spacing:.12em;color:#fff;background:#7c3aed;border-radius:.25rem;padding:3px 9px;font-size:.62rem;font-weight:700;box-shadow:0 0 10px #7c3aed80}.navbar-upgrade-btn{background:var(--primary-strong);color:var(--on-primary);border-radius:var(--radius);letter-spacing:.05em;cursor:pointer;border:none;padding:4px 11px;font-size:.75rem;font-weight:600;transition:background .2s ease-in-out}.navbar-upgrade-btn:hover{background:var(--primary)}.navbar-plan-btn{color:var(--text-secondary);border:1px solid var(--border-strong);border-radius:var(--radius);letter-spacing:.05em;cursor:pointer;background:0 0;padding:4px 10px;font-size:.75rem;font-weight:600;transition:color .2s ease-in-out}.navbar-plan-btn:hover{color:var(--text)}.add-card-modal-card,.story-modal-card,.sandbox-card-strip,.select-action-bar,.sandbox-progress-pill,.embed-warning-banner{background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(150%)}.add-card-modal-card,.story-modal-card{box-shadow:inset 0 1px 0 #ffffff12, var(--shadow-modal)}.sandbox-card-strip,.select-action-bar{box-shadow:inset 0 1px #ffffff0d}.sandbox-progress-pill,.embed-warning-banner{box-shadow:inset 0 1px 0 #ffffff0f, var(--shadow-card)}.sandbox-panel{-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(140%);background:#0d0e14d1}.word-lookup-panel{background:#ffffff0d;box-shadow:inset 0 1px #ffffff0d}@keyframes acm-fade{0%{opacity:0}to{opacity:1}}@keyframes acm-scale{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}