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78%,var(--workspace-top-surface) 100%);box-shadow:inset 0 1px #ffffffb8;--tw-text-opacity: 1;color:rgb(8 47 73 / var(--tw-text-opacity, 1))}.layer-tab-student.is-active{border-color:var(--workspace-tab-border);background:linear-gradient(180deg,rgba(252,211,77,.95) 0%,rgba(254,243,199,.98) 78%,var(--workspace-top-surface) 100%);box-shadow:inset 0 1px #ffffffb3;--tw-text-opacity: 1;color:rgb(69 26 3 / var(--tw-text-opacity, 1))}.layer-tab-icon{width:1rem;height:1rem;flex:none}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;border-radius:.375rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));background-color:#f1f5f9cc;padding:.375rem}.toolbar-actions{display:flex;align-items:center;gap:.25rem}.toolbar-helper{min-width:0px;flex:1 1 0%;font-size:.875rem;line-height:1.25rem;--tw-text-opacity: 1;color:rgb(71 85 105 / var(--tw-text-opacity, 1))}.toolbar-icon-btn{position:relative;height:2rem;width:2rem;border-radius:.375rem;border-width:1px;border-color:transparent;background-color:transparent;padding:0;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}.toolbar-icon-btn:hover{--tw-border-opacity: 1;border-color:rgb(203 213 225 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1));transform:none}.toolbar-icon-btn:after{content:attr(data-tooltip);position:absolute;left:50%;top:calc(100% + 6px);transform:translate(-50%);white-space:nowrap;pointer-events:none;opacity:0;border:1px solid rgba(148,163,184,.7);border-radius:.45rem;background:#fffffffa;color:#334155;font-size:11px;font-weight:600;line-height:1;padding:.34rem .48rem;box-shadow:0 8px 18px #0f172a1f;transition:opacity .12s ease;z-index:50}.toolbar-icon-btn:hover:after,.toolbar-icon-btn:focus-visible:after{opacity:1}.mode-layout .toolbar{--tw-border-opacity: 1;border-color:rgb(186 230 253 / var(--tw-border-opacity, 1));background-color:#f0f9ffcc}.mode-layout .toolbar-icon-btn{--tw-text-opacity: 1;color:rgb(7 89 133 / var(--tw-text-opacity, 1))}.mode-layout .toolbar-icon-btn:hover{--tw-border-opacity: 1;border-color:rgb(125 211 252 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(12 74 110 / var(--tw-text-opacity, 1))}.mode-layout .toolbar-helper{color:#0c4a6ecc}.mode-student .toolbar{--tw-border-opacity: 1;border-color:rgb(253 230 138 / var(--tw-border-opacity, 1));background-color:#fffbebcc}.mode-student .toolbar-icon-btn{--tw-text-opacity: 1;color:rgb(146 64 14 / var(--tw-text-opacity, 1))}.mode-student .toolbar-icon-btn:hover{--tw-border-opacity: 1;border-color:rgb(252 211 77 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(120 53 15 / var(--tw-text-opacity, 1))}.mode-student .toolbar-helper{color:#78350fcc}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.panel h2{font-size:1.125rem;line-height:1.75rem;font-weight:600;--tw-text-opacity: 1;color:rgb(30 41 59 / var(--tw-text-opacity, 1))}.panel h3{font-size:1rem;line-height:1.5rem;font-weight:600;--tw-text-opacity: 1;color:rgb(30 41 59 / var(--tw-text-opacity, 1))}.section-title-with-icon{display:inline-flex;align-items:center;gap:.375rem}.panel-section-title{margin:0;font-size:1rem;line-height:1.5rem;font-weight:600;--tw-text-opacity: 1;color:rgb(30 41 59 / var(--tw-text-opacity, 1))}.panel-section-title .ui-icon{height:18px;width:18px}.meta{font-size:.875rem;line-height:1.25rem;--tw-text-opacity: 1;color:rgb(71 85 105 / var(--tw-text-opacity, 1))}.scroll-list{margin:0;display:flex;max-height:12rem;list-style-type:none;flex-direction:column;gap:.25rem;overflow:auto;border-radius:.5rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));background-color:#f8fafcb3;padding:.375rem}.scroll-list li{display:flex;align-items:center;justify-content:space-between;gap:.5rem;border-radius:.375rem;padding:.25rem .375rem;font-size:.875rem;line-height:1.25rem}.scroll-list li:hover{--tw-bg-opacity: 1;background-color:rgb(240 249 255 / var(--tw-bg-opacity, 1))}.solver-actions{display:flex;flex-wrap:wrap;gap:.5rem}.solver-stats-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.5rem;border-radius:.75rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));background-color:#f8fafccc;padding:.5rem}.solver-stat-card{display:flex;min-width:0px;flex-direction:column;border-radius:.5rem;border-width:1px;border-color:#fffc;background-color:#fffc;padding:.5rem .75rem;--tw-shadow: 0 1px 2px 0 rgb(0 0 0 / .05);--tw-shadow-colored: 0 1px 2px 0 var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}.solver-stat-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;--tw-text-opacity: 1;color:rgb(100 116 139 / var(--tw-text-opacity, 1))}.solver-stat-value{margin-top:.25rem;font-size:1.125rem;line-height:1.75rem;font-weight:600;--tw-text-opacity: 1;color:rgb(30 41 59 / var(--tw-text-opacity, 1))}.grid-canvas{position:relative;border-radius:10px;border:1px solid #d6d7d2;background:linear-gradient(180deg,#f9f8f3fa,#fffdf7fa),repeating-linear-gradient(45deg,rgba(36,31,24,.012) 0,rgba(36,31,24,.012) 2px,transparent 2px,transparent 8px);overflow:hidden;box-shadow:inset 0 1px #ffffffeb,inset 0 14px 22px #61523814,inset 0 -3px 8px #ffffff85;max-width:100%;-moz-user-select:none;user-select:none;-webkit-user-select:none}.grid-canvas.layout-layer-active{cursor:crosshair}.grid-cells{position:absolute;inset:0;display:grid}.grid-cell{width:var(--cell-size, 64px);height:var(--cell-size, 64px);border:1px solid rgba(98,126,148,.18)}.grid-canvas.layout-layer-active .grid-cell{border-color:#387dff38}.grid-canvas.student-layer-active .grid-cell{border-color:#e1950b38}.drop-anchor{position:absolute;left:50%;transform:translate(-50%);min-width:116px;text-align:center;background:#fff;border:1px dashed #7a9ab3;border-radius:7px;color:#36526b;font-size:.8rem;font-weight:600;padding:.2rem .5rem;z-index:5}.back-anchor{top:6px}.front-anchor{bottom:6px;background:#fff4df;border-color:#c89f58;color:#6a4d1e}.constraint-overlay{position:absolute;inset:0;pointer-events:none;z-index:4}.constraint-link-hit-area{stroke:transparent;pointer-events:stroke}.constraint-overlay-icons{position:absolute;inset:0;pointer-events:none;z-index:6}.constraint-line-icon-badge{position:absolute;transform:translate(-50%,-50%);width:22px;height:22px;border-radius:999px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #0f172a1f;border:1px solid rgba(148,163,184,.55);background:#ffffffe6;color:#475569}.constraint-overlay-icons .constraint-line-icon-badge{pointer-events:auto;transition:transform .12s ease,box-shadow .12s ease,background-color .12s ease,border-color .12s ease}.constraint-line-icon-badge.is-linked-hover{transform:translate(-50%,-50%) scale(1.08);box-shadow:0 4px 12px #0f172a2e;border-color:#33415573;background:#fffffffa}.constraint-line-icon{width:14px;height:14px}.constraint-line-icon-badge.pair-next-badge{color:#168a55}.constraint-line-icon-badge.pair-not-next-badge{color:#d44f4f}.constraint-line-icon-badge.position-link-badge{color:#5f6ea9}.constraint-overlay .pair-link-underlay{stroke:#ffffffad;stroke-linecap:round;stroke-linejoin:round}.constraint-overlay .pair-link-underlay.is-linked-hover{stroke:#ffffffd6}.constraint-overlay .pair-next{stroke:#168a55;stroke-dasharray:9 6;stroke-linecap:round;stroke-linejoin:round;transition:stroke-width .12s ease,opacity .12s ease}.constraint-overlay .pair-not-next{stroke:#d44f4f;stroke-linecap:round;stroke-linejoin:round;transition:stroke-width .12s ease,opacity .12s ease}.constraint-overlay .position-link{stroke:#5f6ea9;stroke-dasharray:4 5;transition:stroke-width .12s ease,opacity .12s ease}.constraint-overlay .pair-next.is-linked-hover,.constraint-overlay .pair-not-next.is-linked-hover{stroke-width:4.5}.constraint-overlay .position-link.is-linked-hover{stroke-width:3}.seat-spot{position:absolute;width:var(--cell-size, 64px);height:var(--cell-size, 64px);padding:clamp(2px,calc(var(--cell-size, 64px) * .047),4px);z-index:3;pointer-events:none;display:flex;align-items:center;justify-content:center}.seat-spot.drag-source-seat{z-index:3}.active-seat{border:1px solid rgba(23,92,129,.6);border-radius:8px;background:linear-gradient(165deg,#589abfe6,#2f729ce0);box-shadow:inset 0 0 0 1px #ffffff3d}.ghost-seat{border:1px dashed rgba(23,92,129,.34);border-radius:8px;background:linear-gradient(165deg,#589abf29,#2f729c1f);box-shadow:inset 0 0 0 1px #ffffff24}.ghost-seat .seat-empty{border-color:#ffffff75;background:#ffffff14;color:#ffffffc2}.layout-delete-hover{border-color:#dc2626c7;background:linear-gradient(165deg,#f97373c7,#dc2626b8);box-shadow:inset 0 0 0 1px #ffffff2e,0 0 0 2px #f871712e}.layout-delete-hover .seat-empty{border-color:#fff5f5db;background:#ffffff1f;color:#fffafaf5}.student-layer-seat{border-color:#2661836b;background:linear-gradient(165deg,#589abf94,#2f729c8a);box-shadow:inset 0 0 0 1px #ffffff2e}.drop-seat-candidate{transition:box-shadow .12s ease,border-color .12s ease,transform .12s ease}.drop-seat-candidate .seat-empty{border-color:#ffffffc7}.drop-seat-hover{border-color:#3d92fff2;box-shadow:inset 0 0 0 1px #b5dcffd9,0 0 0 2px #3d92ff6b;transform:scale(1.03)}.drop-seat-hover .seat-empty{border-color:#3d92fff2;background:#e2f1ff73}.seat-empty{display:inline-flex;align-items:center;justify-content:center;border-radius:9999px;border-width:2px;border-style:dotted;border-color:#ffffffb3;background-color:#ffffff1a;font-weight:700;--tw-text-opacity: 1;color:rgb(255 255 255 / var(--tw-text-opacity, 1));width:calc(var(--cell-size, 64px) - (clamp(6px,calc(var(--cell-size, 64px) * .125),10px) * 2));height:calc(var(--cell-size, 64px) - (clamp(6px,calc(var(--cell-size, 64px) * .125),10px) * 2));font-size:clamp(9px,calc(var(--cell-size, 64px) * .17),11px);-webkit-user-select:none;-moz-user-select:none;user-select:none}.student-chip{position:relative;overflow:hidden;pointer-events:auto;display:flex;-moz-user-select:none;user-select:none;flex-direction:column;align-items:center;justify-content:center;gap:0px;border-radius:9999px;border-width:1px;--tw-border-opacity: 1;border-color:rgb(252 211 77 / var(--tw-border-opacity, 1));background-image:linear-gradient(to bottom,var(--tw-gradient-stops));--tw-gradient-from: #fffbeb var(--tw-gradient-from-position);--tw-gradient-to: rgb(255 251 235 / 0) var(--tw-gradient-to-position);--tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to);--tw-gradient-to: #fef3c7 var(--tw-gradient-to-position);text-align:center;line-height:1.25;--tw-text-opacity: 1;color:rgb(120 53 15 / var(--tw-text-opacity, 1));width:calc(var(--cell-size, 64px) - (clamp(5px,calc(var(--cell-size, 64px) * .109375),9px) * 2));height:calc(var(--cell-size, 64px) - (clamp(5px,calc(var(--cell-size, 64px) * .109375),9px) * 2));padding:clamp(2px,calc(var(--cell-size, 64px) * .05),4px);font-size:clamp(9px,calc(var(--cell-size, 64px) * .17),11px);box-shadow:0 4px 9px #60400829,inset 0 0 0 1px #ffffff73;-webkit-user-select:none;transition:transform .12s ease,box-shadow .12s ease,border-color .12s ease,background-color .12s ease}.student-chip-portrait{position:absolute;inset:0;overflow:hidden;border-radius:inherit;pointer-events:none}.student-chip-portrait-icon{position:absolute;left:50%;top:50%;width:150%;height:150%;max-width:none;max-height:none;color:#b4741326;transform:translate(-50%,-50%)}.student-chip:not(.readonly){cursor:grab}.student-chip:not(.readonly):hover{transform:translateY(-1px);border-color:#d9a44e;box-shadow:0 8px 14px #60400838,inset 0 0 0 1px #ffffff85}.student-chip:not(.readonly):active{cursor:grabbing;transform:scale(.98)}.student-chip.is-drag-origin{opacity:.18;pointer-events:none}.drag-ghost{position:fixed;z-index:9999;pointer-events:none;transition:none;box-shadow:0 10px 20px #60400847,inset 0 0 0 1px #ffffff8c;cursor:grabbing}.drop-student-candidate{transition:box-shadow .12s ease,border-color .12s ease,transform .12s ease}.drop-student-hover{border-color:#d6a140;box-shadow:0 10px 18px #8256093d,inset 0 0 0 1px #ffffffa6;transform:scale(1.06)}.student-chip-name{position:relative;z-index:1;padding-left:.25rem;padding-right:.25rem;font-weight:600;pointer-events:none;display:-webkit-box;overflow:hidden;text-overflow:ellipsis;-webkit-line-clamp:3;-webkit-box-orient:vertical}.student-chip.readonly{pointer-events:none;opacity:.96}.student-seat-chip{position:absolute;z-index:5}.constraint-popover{position:fixed;z-index:170;min-width:min(220px,calc(100vw - 1.5rem));max-width:min(280px,calc(100vw - 1.5rem));transform:translate(-50%,-50%);pointer-events:auto;background:#fffffffa;display:flex;flex-direction:column;gap:.5rem;border-radius:.75rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(203 213 225 / var(--tw-border-opacity, 1));padding:.75rem;font-size:.875rem;line-height:1.25rem;--tw-shadow: 0 10px 24px rgba(18, 34, 50, .1);--tw-shadow-colored: 0 10px 24px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow);--tw-backdrop-blur: blur(4px);-webkit-backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia);backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia)}.constraint-popover-title{font-size:.875rem;line-height:1.25rem;font-weight:600;--tw-text-opacity: 1;color:rgb(30 41 59 / var(--tw-text-opacity, 1))}.constraint-popover-header{display:flex;align-items:flex-start;justify-content:space-between;gap:.5rem}.constraint-popover-close{height:1.75rem;width:1.75rem;flex-shrink:0;border-radius:9999px}.constraint-popover-students{display:flex;align-items:center;gap:.25rem;font-size:.75rem;line-height:1rem;font-weight:500;--tw-text-opacity: 1;color:rgb(100 116 139 / var(--tw-text-opacity, 1))}.constraint-popover-actions{display:flex;flex-wrap:wrap;gap:.5rem}.constraint-rule-list{margin-bottom:0;display:flex;min-height:0px;flex:1 1 0%;flex-direction:column;gap:.375rem;overflow:auto;border-radius:.5rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));background-color:#f8fafcb3;padding:.375rem}.constraint-empty{margin:0;border-radius:.375rem;border-width:1px;border-style:dashed;--tw-border-opacity: 1;border-color:rgb(203 213 225 / var(--tw-border-opacity, 1));background-color:#ffffffb3;padding:.5rem;font-size:.875rem;line-height:1.25rem;--tw-text-opacity: 1;color:rgb(100 116 139 / var(--tw-text-opacity, 1))}.constraint-rule-card{display:flex;align-items:center;gap:.5rem;border-radius:.375rem;border-width:1px;--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1));padding:.375rem .5rem;--tw-shadow: 0 1px 2px 0 rgb(0 0 0 / .05);--tw-shadow-colored: 0 1px 2px 0 var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow);transition:transform .12s ease,box-shadow .12s ease,border-color .12s ease,background-color .12s ease}.constraint-rule-card.state-pass{--tw-border-opacity: 1;border-color:rgb(167 243 208 / var(--tw-border-opacity, 1));background-color:#ecfdf573}.constraint-rule-card.state-fail{--tw-border-opacity: 1;border-color:rgb(254 205 211 / var(--tw-border-opacity, 1));background-color:#fff1f273}.constraint-rule-card.state-pending{--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1))}.constraint-rule-card.is-linked-hover{transform:translateY(-1px);box-shadow:0 8px 18px #0f172a1a}.constraint-rule-card.state-pass.is-linked-hover{--tw-border-opacity: 1;border-color:rgb(110 231 183 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(236 253 245 / var(--tw-bg-opacity, 1))}.constraint-rule-card.state-fail.is-linked-hover{--tw-border-opacity: 1;border-color:rgb(253 164 175 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 241 242 / var(--tw-bg-opacity, 1))}.constraint-rule-card.state-pending.is-linked-hover{--tw-border-opacity: 1;border-color:rgb(125 211 252 / var(--tw-border-opacity, 1));background-color:#f0f9ffb3}.constraint-status-icon{display:inline-flex;height:1.25rem;width:1.25rem;align-items:center;justify-content:center;border-radius:9999px;border-width:1px;--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1));--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1));--tw-text-opacity: 1;color:rgb(100 116 139 / var(--tw-text-opacity, 1))}.constraint-rule-card.state-pass .constraint-status-icon{--tw-border-opacity: 1;border-color:rgb(110 231 183 / var(--tw-border-opacity, 1));--tw-text-opacity: 1;color:rgb(5 150 105 / var(--tw-text-opacity, 1))}.constraint-rule-card.state-fail .constraint-status-icon{--tw-border-opacity: 1;border-color:rgb(253 164 175 / var(--tw-border-opacity, 1));--tw-text-opacity: 1;color:rgb(225 29 72 / var(--tw-text-opacity, 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