:root{--bg: #f7f8fa;--surface: #ffffff;--surface-2: #f1f3f5;--surface-3: #e9ecef;--fg: #1f2328;--muted: #6b7280;--faint: #9aa1ab;--border: #e4e7eb;--border-strong: #d4d8de;--accent: #2f6df6;--accent-fg: #ffffff;--accent-soft: #e8f0ff;--danger: #e5484d;--danger-soft: #fdecec;--success: #2f9e54;--success-soft: #e6f6ec;--success-border: #b6e3c5;--row-selected: #e8f0ff;--row-hover: #f1f3f5;--heatmap: var(--accent);--active-fg: var(--accent);--radius-sm: 5px;--radius: 8px;--radius-lg: 12px;--shadow-1: 0 1px 2px rgba(16, 24, 40, .05);--shadow-2: 0 4px 16px rgba(16, 24, 40, .08);--shadow-pop: 0 8px 28px rgba(16, 24, 40, .14);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px;color:var(--fg);background:var(--bg);color-scheme:light}[data-theme=dark]{--bg: #16181d;--surface: #1d2026;--surface-2: #252932;--surface-3: #2e333d;--fg: #e6e8eb;--muted: #9aa1ab;--faint: #6b7280;--border: #2c313a;--border-strong: #3a404b;--accent: #4d8bff;--accent-fg: #0c111b;--accent-soft: #1f2a3d;--danger: #f06a6e;--danger-soft: #2e1d1f;--success: #5cc77f;--success-soft: #1c2a21;--success-border: #2f5a3e;--row-selected: #233045;--row-hover: #252932;--active-fg: var(--fg);--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 4px 16px rgba(0, 0, 0, .4);--shadow-pop: 0 8px 28px rgba(0, 0, 0, .55);color-scheme:dark}[data-theme=everforest]{--bg: #232a2e;--surface: #2d353b;--surface-2: #343f44;--surface-3: #3d484d;--fg: #d3c6aa;--muted: #94a199;--faint: #5c6a63;--border: #3d484d;--border-strong: #4a555a;--accent: #a7c080;--accent-fg: #232a2e;--accent-soft: rgba(167, 192, 128, .16);--danger: #e67e80;--danger-soft: #3a2d2e;--success: #83c092;--success-soft: #2a3a30;--success-border: #3f5a48;--row-selected: rgba(167, 192, 128, .16);--row-hover: #343f44;--active-fg: var(--fg);--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 4px 16px rgba(0, 0, 0, .4);--shadow-pop: 0 8px 28px rgba(0, 0, 0, .55);color-scheme:dark}[data-theme=everforest-light]{--bg: #f4f1e4;--surface: #fbf8ee;--surface-2: #ede9da;--surface-3: #e2ddca;--fg: #3a2a22;--muted: #62705a;--faint: #a6b0a0;--border: #dcd8c8;--border-strong: #c9c4b0;--accent: #5e7311;--accent-fg: #fbf8ee;--accent-soft: rgba(94, 115, 17, .16);--danger: #f85552;--danger-soft: #f6e6e0;--success: #2c8a66;--success-soft: #e3f3ea;--success-border: #b6e0c9;--row-selected: #ebeed4;--row-hover: #ede9da;--active-fg: var(--accent);--shadow-1: 0 1px 2px rgba(54, 42, 20, .06);--shadow-2: 0 4px 16px rgba(54, 42, 20, .1);--shadow-pop: 0 8px 28px rgba(54, 42, 20, .16);color-scheme:light}[data-theme=espresso]{--bg: #242120;--surface: #312c2b;--surface-2: #3a3433;--surface-3: #443d3b;--fg: #e4e3e1;--muted: #ab9f99;--faint: #6a5e59;--border: #443d3b;--border-strong: #524a47;--accent: #f08d71;--accent-fg: #242120;--accent-soft: rgba(240, 141, 113, .16);--danger: #f86882;--danger-soft: #3a2a2d;--success: #a6cd77;--success-soft: #322e22;--success-border: #4f5a36;--row-selected: rgba(240, 141, 113, .16);--row-hover: #3a3433;--active-fg: var(--fg);--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 4px 16px rgba(0, 0, 0, .4);--shadow-pop: 0 8px 28px rgba(0, 0, 0, .55);color-scheme:dark}[data-theme=espresso-light]{--bg: #f3eadd;--surface: #faf3eb;--surface-2: #ece1d0;--surface-3: #e1d3bd;--fg: #3a2a22;--muted: #7a5e4e;--faint: #b39a83;--border: #dccdb6;--border-strong: #cdba9e;--accent: #aa5e20;--accent-fg: #faf3eb;--accent-soft: rgba(170, 94, 32, .14);--danger: #c0392b;--danger-soft: #f6e0e0;--success: #6a8a2a;--success-soft: #eef0dd;--success-border: #cdd9a3;--row-selected: #f6e3d8;--row-hover: #ece1d0;--active-fg: var(--accent);--shadow-1: 0 1px 2px rgba(58, 42, 34, .06);--shadow-2: 0 4px 16px rgba(58, 42, 34, .1);--shadow-pop: 0 8px 28px rgba(58, 42, 34, .16);color-scheme:light}[data-theme=lavendel]{--bg: #f6ecf4;--surface: #fcf5fa;--surface-2: #eee2ed;--surface-3: #e6d6e4;--fg: #30202c;--muted: #70586a;--faint: #a28c9e;--border: #dcccdc;--border-strong: #ccb8cc;--accent: #a8467f;--accent-fg: #ffffff;--accent-soft: rgba(168, 70, 127, .16);--danger: #b92a37;--danger-soft: #fcebee;--success: #3e8a55;--success-soft: #e6f3ec;--success-border: #bce0c9;--row-selected: #f3e2ee;--row-hover: #eee2ed;--active-fg: var(--accent);--shadow-1: 0 1px 2px rgba(48, 32, 44, .06);--shadow-2: 0 4px 16px rgba(48, 32, 44, .1);--shadow-pop: 0 8px 28px rgba(48, 32, 44, .16);color-scheme:light}[data-theme=lavendel-dark]{--bg: #1c1420;--surface: #261c2c;--surface-2: #322639;--surface-3: #46364e;--fg: #f0e6f2;--muted: #af9bb2;--faint: #786480;--border: #46364e;--border-strong: #574463;--accent: #d296b9;--accent-fg: #241a29;--accent-soft: rgba(210, 150, 185, .16);--danger: #f88c9b;--danger-soft: #461c26;--success: #6ec88c;--success-soft: #233525;--success-border: #3d5a46;--row-selected: rgba(210, 150, 185, .16);--row-hover: #322639;--active-fg: var(--fg);--shadow-1: 0 1px 2px rgba(0, 0, 0, .45);--shadow-2: 0 4px 16px rgba(0, 0, 0, .45);--shadow-pop: 0 8px 28px rgba(0, 0, 0, .6);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;overscroll-behavior:none}body{background:var(--bg);color:var(--fg)}.app-root{height:100vh;display:flex;flex-direction:column}.app-main{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:none}button{font:inherit;cursor:pointer;border:1px solid var(--border-strong);background:var(--surface);color:var(--fg);border-radius:var(--radius-sm);padding:.4rem .75rem;transition:background .12s ease,border-color .12s ease,color .12s ease}button:hover{background:var(--surface-2)}button:disabled{opacity:.5;cursor:not-allowed}button.primary,.btn-primary{background:var(--accent);color:var(--accent-fg);border-color:transparent}button.primary:hover,.btn-primary:hover{background:var(--accent);filter:brightness(1.06)}.btn-ghost{background:transparent;border-color:transparent}.btn-ghost:hover{background:var(--surface-2)}.btn-danger{background:var(--danger);color:#fff;border-color:transparent}.btn-danger:hover{background:var(--danger);filter:brightness(1.06)}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;padding:0;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--muted);transition:background .12s ease,color .12s ease}.icon-btn:hover{background:var(--surface-3);color:var(--fg)}.icon-btn.danger:hover{background:var(--danger-soft);color:var(--danger)}.icon-btn svg{width:15px;height:15px}input,textarea,select{font:inherit;padding:.4rem .6rem;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--fg);width:100%}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}a{color:var(--accent)}.topbar{display:flex;align-items:center;gap:1.5rem;padding:0 1.1rem;height:52px;background:var(--surface);border-bottom:1px solid var(--border)}.topbar-brand{font-weight:700;letter-spacing:-.01em;font-size:1.05rem}.topbar-nav{display:flex;gap:.25rem}.nav-link{text-decoration:none;color:var(--muted);font-weight:500;padding:.35rem .7rem;border-radius:var(--radius-sm);transition:background .12s ease,color .12s ease}.nav-link:hover{background:var(--surface-2);color:var(--fg)}.nav-link.active{background:var(--accent-soft);color:var(--active-fg)}.topbar-spacer{margin-left:auto}.topbar-user{color:var(--muted);font-size:.9rem}.sidebar{background:var(--surface);border-right:1px solid var(--border)}.sidebar-section+.sidebar-section{margin-top:.5rem;border-top:1px solid var(--border)}.sidebar-head{display:flex;align-items:center;gap:.4rem;padding:.55rem .75rem .4rem;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--faint)}.sidebar-head .icon-btn{width:22px;height:22px}.tree{list-style:none;margin:0;padding:0 .35rem .35rem}.tree ul{list-style:none;margin:0;padding:0}.tree-row{display:flex;align-items:center;gap:.15rem;border-radius:var(--radius-sm);cursor:pointer;-webkit-user-select:none;user-select:none;color:var(--fg)}.tree-row:hover{background:var(--row-hover)}.tree-row.selected{background:var(--row-selected);color:var(--active-fg)}.tree-twisty{display:inline-flex;align-items:center;justify-content:center;width:18px;height:24px;flex:none;color:var(--faint);transition:transform .12s ease}.tree-twisty.collapsed{transform:rotate(-90deg)}.tree-twisty.leaf{visibility:hidden}.tree-label{flex:1;padding:.28rem 0;font-size:.92rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tree-count{color:var(--faint);font-size:.8rem;padding:0 .2rem}.tree-actions{display:inline-flex;gap:.05rem;opacity:0;transition:opacity .12s ease}.tree-row:hover .tree-actions,.tree-row.selected .tree-actions{opacity:1}.tree-rename-input{flex:1;width:auto;padding:.15rem .3rem;font-size:.92rem}.page{padding:1.5rem 1.75rem}.workspace{display:grid;height:100%;overflow:hidden}.workspace-sidebar{overflow-y:auto;overscroll-behavior:none}.workspace-main{display:flex;flex-direction:column;min-width:0;overflow:hidden}.workspace-panel{overflow-y:auto;overscroll-behavior:none;background:var(--surface)}.cardman-bar{display:flex;align-items:center;gap:.75rem;flex:none;padding:.6rem .9rem;border-bottom:1px solid var(--border);background:var(--surface)}.cardman-body{flex:1;overflow-y:auto;overscroll-behavior:none}.panel-resizer{cursor:col-resize;background:var(--border);transition:background .15s ease}.panel-resizer:hover,.panel-resizer:active{background:var(--accent)}.sidebar-toolbar{display:flex;justify-content:flex-end;padding:.35rem .4rem 0}.workspace-sidebar.collapsed{display:flex;justify-content:center;padding-top:.35rem;overflow:hidden}.section-title{margin:0 0 .25rem;font-size:1.35rem;font-weight:700;letter-spacing:-.01em}.section-sub{margin:0 0 1.25rem;color:var(--muted)}.deck-launch{display:flex;align-items:center;gap:.75rem;padding:.7rem .9rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-1)}.deck-launch-name{font-weight:600}.deck-launch-path{color:var(--faint);font-weight:400}.bucket-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:.75rem}.bucket-tile{position:relative;display:flex;flex-direction:column;align-items:center;gap:.25rem;padding:1rem .75rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-1);cursor:pointer}.bucket-tile:hover:not(:disabled){border-color:var(--accent, var(--faint))}.bucket-tile:disabled{opacity:.5;cursor:default}.bucket-tile.completed{background:var(--success-soft);border-color:var(--success-border)}.bucket-tile.completed .bucket-count{color:var(--success)}.bucket-tile.locked{opacity:.45;background:var(--surface-2)}.bucket-lock{position:absolute;top:.5rem;right:.5rem;color:var(--faint)}.bucket-count{font-size:1.6rem;font-weight:700}.bucket-label{color:var(--faint);font-size:.9rem}.study-done-actions{display:flex;align-items:center;gap:.6rem;margin-top:.5rem}.dialog-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;padding:1rem;z-index:50}.dialog{width:100%;max-width:460px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:1.25rem}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.card-table-wrap{width:100%}.card-table{width:100%;border-collapse:collapse;font-size:.9rem;table-layout:fixed}.card-table th{position:sticky;top:0;z-index:1;text-align:left;font-weight:600;color:var(--muted);background:var(--surface-2);padding:.4rem .7rem;border-bottom:1px solid var(--border-strong);white-space:nowrap}.card-table td{padding:.32rem .7rem;border-bottom:1px solid var(--border);max-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-table th.sortable{cursor:pointer;-webkit-user-select:none;user-select:none}.card-table th.sortable:hover{color:var(--fg)}.th-sort{margin-left:.3rem;font-size:.7em;color:var(--accent)}.ctx-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60}.ctx-menu{position:fixed;min-width:190px;padding:.3rem;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-sm);box-shadow:0 8px 24px #00000047}.ctx-menu-title{padding:.25rem .5rem .35rem;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--faint)}.ctx-menu-item{display:flex;align-items:center;gap:.5rem;padding:.32rem .5rem;border-radius:var(--radius-sm);font-size:.9rem;cursor:pointer}.ctx-menu-item:hover{background:var(--row-hover)}.ctx-menu-item input{width:auto;flex:none;margin:0;padding:0;cursor:pointer}.card-table tbody tr{cursor:pointer}.card-table tbody tr:hover{background:var(--row-hover)}.card-table tbody tr.selected{background:var(--row-selected)}.cell-muted{color:var(--muted)}.cell-deck{color:var(--faint);font-size:.82rem}.rte{border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--surface);transition:border-color .15s ease,box-shadow .15s ease}.rte:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.rte-toolbar{display:flex;align-items:center;gap:2px;padding:4px 6px;border-bottom:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius) var(--radius) 0 0}.rte-toolbar button{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;padding:0;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--muted)}.rte-toolbar button:hover{background:var(--surface-3);color:var(--fg)}.rte-toolbar button.active{background:var(--accent);color:var(--accent-fg)}.rte-sep{width:1px;height:18px;background:var(--border);margin:0 4px}.rte-toolbar-shared{position:sticky;top:0;z-index:5;flex-wrap:wrap;gap:2px;margin:.1rem 0 .25rem;padding:3px 4px;border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--surface-2);box-shadow:inset 0 1px 2px #00000024}.rte-toolbar-shared button{width:27px;height:27px}.rte-group{display:inline-flex;align-items:center;gap:1px;padding-right:4px;margin-right:2px;border-right:1px solid var(--border)}.rte-group:last-child{border-right:none;margin-right:0;padding-right:0}.rte-toolbar button:disabled{opacity:.35;cursor:default}.rte-toolbar button:disabled:hover{background:transparent;color:var(--muted)}.rte-color{position:relative;display:inline-flex}.rte-color>button{flex-direction:column;gap:1px}.rte-color-bar{display:block;width:16px;height:3px;border-radius:2px}.rte-color-pop{position:absolute;top:100%;left:0;margin-top:4px;z-index:20;display:grid;grid-template-columns:repeat(4,22px);gap:5px;padding:6px;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-sm);box-shadow:0 6px 20px #00000040}.rte-swatch{width:22px;height:22px;padding:0;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer}.rte-swatch-clear{display:inline-flex;align-items:center;justify-content:center;background:var(--surface-2);color:var(--muted)}.rte .tableWrapper{overflow-x:auto}.rte table,.study-panel table,.study-front table{border-collapse:collapse;table-layout:fixed;margin:.5rem 0;position:relative}.rte td,.rte th,.study-panel td,.study-panel th,.study-front td,.study-front th{position:relative;min-width:2.5rem;padding:.3rem .5rem;border:1px solid var(--border-strong);vertical-align:top}.rte th,.study-panel th,.study-front th{background:var(--surface-2);font-weight:600}.ProseMirror .selectedCell:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--accent-soft);pointer-events:none}.ProseMirror .column-resize-handle{position:absolute;right:-2px;top:0;bottom:-2px;width:4px;background:var(--accent);pointer-events:none}.ProseMirror.resize-cursor{cursor:col-resize}.editor-divider{border:none;border-top:1px solid var(--border);margin:0}.editor-tabs{display:grid;grid-template-columns:1fr 1fr;width:100%;border-bottom:1px solid var(--border)}.editor-tab{padding:.4rem 0;border:none;border-radius:0;border-bottom:2px solid transparent;margin-bottom:-1px;background:transparent;color:var(--muted);font-size:.9rem;line-height:1.2;text-align:center;cursor:pointer}.editor-tab:hover{background:var(--surface-2);color:var(--fg)}.editor-tab.active{color:var(--fg);font-weight:600;border-bottom-color:var(--accent)}.cardman-count{flex:none;width:4.5rem;text-align:right;color:var(--faint);font-size:.85rem;font-variant-numeric:tabular-nums;white-space:nowrap}.ProseMirror{padding:.5rem .7rem;min-height:2.4rem;outline:none}.ProseMirror p{margin:0 0 .5rem}.ProseMirror p:last-child{margin-bottom:0}.ProseMirror h1,.ProseMirror h2{margin:.4rem 0;line-height:1.2}.ProseMirror h1{font-size:1.4em}.ProseMirror h2{font-size:1.2em}.ProseMirror ul,.ProseMirror ol{margin:.3rem 0;padding-left:1.4rem}.ProseMirror blockquote{margin:.4rem 0;padding-left:.8rem;border-left:3px solid var(--border-strong);color:var(--muted)}.ProseMirror mark{background-color:#fde68a;color:#1f2328!important;border-radius:2px;padding:0 1px}.rte-study,.rte-study:focus-within{border:none;background:transparent;box-shadow:none}.rte-study .ProseMirror{cursor:text;padding:0;min-height:0}.study-card{max-width:720px;margin:0 auto;font-size:1.15rem;line-height:1.55}.study-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:.78rem;margin-bottom:.5rem}.study-deck{margin-left:auto}.study-check{display:inline-flex;align-items:center;gap:.4rem;background:transparent;border:none;padding:.1rem 0;color:var(--muted);font-size:.78rem;cursor:pointer;transition:color .15s ease,opacity .15s ease}.study-check:hover:not(:disabled){color:var(--fg)}.study-check:disabled{opacity:.4;cursor:default}.study-check kbd{font-family:inherit;font-size:.68rem;color:var(--faint);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:0 .3rem;line-height:1.4}.study-edit-btn{display:inline-flex;align-items:center;gap:.4rem;margin-left:.75rem;background:transparent;border:none;padding:.1rem 0;color:var(--muted);font-size:.78rem;cursor:pointer;transition:color .15s ease}.study-edit-btn:hover{color:var(--fg)}.study-edit-btn kbd{font-family:inherit;font-size:.68rem;color:var(--faint);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:0 .3rem;line-height:1.4}.study-edit-backdrop{position:fixed;top:52px;right:0;bottom:0;left:0;background:#00000052;z-index:40}.study-edit-panel{position:fixed;top:52px;right:0;bottom:0;width:min(600px,92vw);z-index:41;border-left:1px solid var(--border);box-shadow:-8px 0 24px #0000002e}.study-glow{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:0 0 26px -10px var(--accent),var(--shadow-2);display:flex;flex-direction:column;overflow:hidden}.study-glow .study-front{background:transparent;border:none;border-radius:0;box-shadow:none}.study-input{width:100%;min-height:4.5rem;resize:none;border:none;border-top:1px solid var(--border);background:transparent;color:var(--fg);font:inherit;line-height:1.55;padding:.9rem 1.3rem 1.1rem;outline:none}.study-input:focus{border-top-color:var(--border);box-shadow:none}.study-input::placeholder{color:var(--faint)}.study-input[readonly]{color:var(--muted);cursor:default}.study-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-2);padding:1.1rem 1.3rem}.study-card p{margin:0}.study-card p+p{margin-top:.6rem}.study-back{margin-top:0}.study-answer{position:relative;margin-top:.8rem}.study-hl-tools{position:absolute;top:0;display:flex;flex-direction:column;align-items:center;gap:.5rem;opacity:.55;transition:opacity .15s ease}.study-hl-controls{right:100%;margin-right:.7rem}.study-hl-colors{left:100%;margin-left:.7rem}.study-hl-tools:hover{opacity:1}.study-hl-color{width:14px;height:14px;padding:0;border:none;border-radius:50%;cursor:pointer;box-shadow:0 0 0 1px var(--border) inset;transition:transform .12s ease,box-shadow .12s ease}.study-hl-color:hover{transform:scale(1.15)}.study-hl-color.active{box-shadow:0 0 0 2px var(--surface),0 0 0 3px var(--muted)}.study-hl-btn{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--muted);cursor:pointer;transition:color .12s ease,background .12s ease}.study-hl-btn:hover{color:var(--fg)}.study-hl-btn.active{color:var(--accent)}.study-field{background:var(--surface-2);border-radius:var(--radius-lg);padding:.7rem 1rem;margin-top:.7rem}.study-field-label{font-size:.68rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:.3rem}.study-tags{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1rem}.study-tag{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.15rem .5rem;font-size:.72rem;color:var(--muted)}.study-rating{margin-top:1.4rem}.study-rating-row{display:flex;justify-content:center;gap:.6rem}.rating-btn{flex:1;max-width:12rem;padding:.65rem 1rem;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--surface-2);color:var(--fg);font-size:.95rem;font-weight:500;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .05s ease}.rating-btn:hover:not(:disabled){background:var(--surface-3)}.rating-btn:active:not(:disabled){transform:translateY(1px)}.rating-btn:disabled{opacity:.5;cursor:default}.rating-hard{border-color:color-mix(in srgb,var(--danger) 45%,var(--border-strong));color:var(--danger)}.rating-hard:hover:not(:disabled){background:var(--danger-soft)}.rating-easy{border-color:color-mix(in srgb,var(--accent) 45%,var(--border-strong));color:var(--accent)}.rating-easy:hover:not(:disabled){background:var(--accent-soft)}.study-overview{max-width:640px;margin:0 auto;display:flex;flex-direction:column;align-items:center;text-align:center;gap:.6rem;padding-top:1.5rem}.study-overview-empty{gap:.25rem}.study-overview-path{color:var(--faint);font-size:.85rem}.study-overview-title{margin:0;font-size:1.7rem;font-weight:700;letter-spacing:-.01em}.study-hero{display:flex;align-items:center;justify-content:center;gap:2.5rem;margin:1.4rem 0 .6rem}.study-hero-counts{display:flex;flex-direction:column;gap:.3rem;text-align:left}.hero-stat{display:flex;align-items:baseline;justify-content:space-between;gap:1.5rem}.hero-label{color:var(--muted);font-size:1rem}.hero-num{font-size:1.5rem;font-weight:700;font-variant-numeric:tabular-nums}.hero-num.due{color:var(--accent)}.hero-num.later{color:var(--muted)}.study-start{padding:.7rem 1.6rem;font-size:1rem;border-radius:999px}.study-overview .bucket-grid{width:100%;margin-top:1rem}.study-activity{width:100%;margin-top:2rem;border-top:1px solid var(--border);padding-top:1.6rem;display:flex;flex-direction:column;align-items:center;gap:1.2rem}.heatmap{max-width:100%;overflow-x:auto}.heatmap-month-row{display:flex;gap:3px;height:1rem;margin-bottom:2px}.heatmap-gutter{width:16px;flex:none}.heatmap-month-label{width:12px;flex:none;font-size:.65rem;color:var(--faint);white-space:nowrap;overflow:visible}.heatmap-main{display:flex;gap:4px}.heatmap-weekdays{display:flex;flex-direction:column;gap:3px;width:14px;flex:none}.heatmap-weekdays span{height:12px;line-height:12px;font-size:.6rem;color:var(--faint)}.heatmap-cells{display:flex;gap:3px}.heatmap-col{display:flex;flex-direction:column;gap:3px}.heatmap-cell{width:12px;height:12px;border-radius:2px;background:var(--surface-2)}.heatmap-cell.lvl-1{background:color-mix(in srgb,var(--heatmap) 28%,var(--surface-2))}.heatmap-cell.lvl-2{background:color-mix(in srgb,var(--heatmap) 52%,var(--surface-2))}.heatmap-cell.lvl-3{background:color-mix(in srgb,var(--heatmap) 76%,var(--surface-2))}.heatmap-cell.lvl-4{background:var(--heatmap)}.heatmap-cell.future{background:transparent}.study-stats-row{display:flex;flex-wrap:wrap;justify-content:center;gap:1.5rem 2.2rem}.study-stat{display:flex;flex-direction:column;align-items:center;gap:.15rem}.study-stat-label{font-size:.78rem;color:var(--muted)}.study-stat-value{font-size:1.05rem;font-weight:600;color:var(--accent)}.field-label{display:block;margin-bottom:.25rem;font-size:.95em;color:var(--muted)}.tag-input{display:flex;flex-wrap:wrap;gap:.3rem;align-items:center;border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:.3rem;background:var(--surface)}.tag-input input{border:none;flex:1;min-width:140px;padding:.2rem .3rem;width:auto;box-shadow:none}.tag-input input:focus{box-shadow:none}.tag-chip{display:inline-flex;align-items:center;gap:.25rem;background:var(--accent-soft);color:var(--active-fg);border-radius:var(--radius-sm);padding:.1rem .2rem .1rem .45rem;font-size:.9em}.tag-chip button{border:none;background:transparent;padding:0 .2rem;cursor:pointer;color:inherit;font-size:1.1em;line-height:1}.toast-stack{position:fixed;bottom:1rem;right:1rem;display:flex;flex-direction:column;gap:.5rem;z-index:1000}.toast{min-width:200px;max-width:360px;padding:.6rem .9rem;border-radius:var(--radius-sm);color:#fff;font-size:.95em;box-shadow:var(--shadow-2);animation:toast-in .15s ease-out}.toast-success{background:var(--success);background:color-mix(in srgb,var(--success) 60%,#000)}.toast-error{background:var(--danger);background:color-mix(in srgb,var(--danger) 60%,#000)}@keyframes toast-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.settings-shell{display:grid;grid-template-columns:220px minmax(0,1fr);height:100%;overflow:hidden}.settings-sidebar{display:flex;flex-direction:column;gap:1.25rem;padding:1.5rem 1rem;border-right:1px solid var(--border);background:var(--surface);overflow-y:auto}.settings-heading{margin:0;padding:0 .5rem;font-size:1.15rem;font-weight:700;letter-spacing:-.01em}.settings-nav{display:flex;flex-direction:column;gap:2px}.settings-nav-item{display:flex;align-items:center;gap:.6rem;width:100%;padding:.5rem .6rem;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--muted);font-weight:500;text-align:left}.settings-nav-item:hover{background:var(--surface-2);color:var(--fg)}.settings-nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.settings-nav-item svg{flex-shrink:0}.settings-content{overflow-y:auto;padding:2rem 2.25rem;max-width:860px}.settings-content-head{margin-bottom:1.5rem}.settings-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-1);padding:1.1rem 1.2rem}.settings-card-head{display:flex;align-items:center;gap:.5rem;margin-bottom:.9rem}.settings-card-title-input{flex:1;font-size:1rem;font-weight:600}.settings-card-actions{display:flex;justify-content:flex-end;gap:.5rem;margin-top:1.1rem}.settings-create-row{display:flex;gap:.5rem;max-width:480px}.settings-create-row input{flex:1}.settings-create-row button.primary,.settings-add-field{display:inline-flex;align-items:center;gap:.35rem}.settings-empty{margin:0;padding:1.5rem;border:1px dashed var(--border-strong);border-radius:var(--radius);color:var(--muted);text-align:center}.settings-fields{display:grid;gap:.5rem}.settings-fields-fixed{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap;padding-bottom:.6rem;margin-bottom:.2rem;border-bottom:1px solid var(--border)}.settings-field-chip{padding:.2rem .55rem;border-radius:999px;background:var(--surface-2);color:var(--muted);font-size:.82rem;font-weight:500}.settings-fields-hint{color:var(--faint);font-size:.82rem}.settings-field-row{display:flex;align-items:center;gap:.4rem}.settings-field-row input{flex:1}.settings-add-field{justify-self:start;margin-top:.2rem;color:var(--muted)}.settings-add-field:hover{color:var(--fg)}@media (max-width: 720px){.settings-shell{grid-template-columns:1fr}.settings-sidebar{flex-direction:row;align-items:center;border-right:none;border-bottom:1px solid var(--border)}.settings-nav{flex-direction:row;flex-wrap:wrap}.settings-content{padding:1.5rem 1.25rem}}.theme-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.6rem;margin-top:.5rem}.theme-option{display:flex;align-items:center;gap:.6rem;width:100%;padding:.55rem .65rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:left;transition:border-color .12s,background .12s}.theme-option:hover{border-color:var(--border-strong);background:var(--row-hover)}.theme-option.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.theme-option-label{font-size:.92rem;color:var(--fg)}.theme-swatch{flex:0 0 auto;display:flex;align-items:center;justify-content:center;gap:4px;width:40px;height:28px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border)}.theme-swatch-bar{width:12px;height:14px;border-radius:3px;background:var(--surface);border:1px solid var(--border)}.theme-swatch-dot{width:12px;height:12px;border-radius:50%;background:var(--accent)}