@import"https://fonts.googleapis.com/css2?family=GFS+Didot&display=swap";.header{background:linear-gradient(90deg,#182848,#182848);padding:.05rem 1rem;color:#fff;box-shadow:0 1px 3px #0003}.header-content{display:flex;justify-content:space-between;align-items:center;max-width:97%;margin:0 auto}.logo a{color:#fff;text-decoration:none;font-size:1.8rem;font-weight:700;font-family:GFS Didot,serif;letter-spacing:2px;transition:color .3s ease}.logo a:hover{color:gold}.nav-links{list-style:none;display:flex;gap:1.2rem;margin:0;padding:0}.nav-links a{color:#fff;text-decoration:none;font-weight:500;transition:color .3s ease,transform .2s ease}.nav-links a:hover{color:gold;transform:scale(1.05)}html,body,#root{height:100%;margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*,*:before,*:after{box-sizing:border-box}.app{display:flex;flex-direction:column;height:100vh;gap:6px;padding:8px;background:#f9f9f9}.study-planner{flex:1;padding:8px;text-align:center;background:#f0f0f0;border-radius:6px;width:100;height:100%;overflow:auto}.board{flex:2;display:flex;flex-direction:column;min-height:0}.semester-grid{display:grid;grid-template-columns:180px repeat(var(--cols),1fr) 100px;width:100%;height:100%}.semester-grid-header{display:grid;grid-template-columns:180px repeat(var(--cols),1fr) 100px;font-weight:600;border-bottom:2px solid #ccc;position:sticky;top:0;background:#f0f0f0}.semester-grid-rows{display:block;border-bottom:2px solid #ccc;min-height:0;overflow-y:auto;height:100%;overflow:hidden}.semester-row{display:grid;grid-template-columns:180px repeat(var(--cols),1fr) 100px;align-items:stretch;border-bottom:1px solid #e0e0e0}.semester-row.header{font-weight:600;background:#f3f3f3;border-bottom:2px solid #ccc}.semester-footer>div{flex-shrink:0;display:grid;position:sticky;bottom:0;width:100%;font-weight:700;background:#eaeaea;border-top:2px solid #ccc;grid-column:1 / -1;padding:8px}.semester-grid-total{grid-column:1 / -1;padding:8px;font-weight:700;border-top:1px solid #ddd;text-align:left;background-color:#f9f9f9}.semester-label-header,.category-header{padding:8px;border-right:1px solid #ddd;text-align:center;background:#f0f0f0}.semester-label{padding:8px;background:#fafafa;border-right:1px solid #ddd;font-weight:700;display:flex;align-items:center;justify-content:center;top:0;border-radius:4px}.semester-row{display:grid;align-items:stretch;border-bottom:1px solid #e0e0e0}.semester-cell{padding:8px;border:1px solid #eee;border-radius:6px;display:flex;flex-direction:column;gap:8px;background:#fff;align-items:stretch;justify-content:flex-start;min-height:60px}.semester-cell.is-over{background-color:#0080ff26;border-color:#0080ff}.delete-module-button button{pointer-events:auto;position:relative;z-index:5}.module-card{padding:4px 8px;border:1px solid #bbb;background:#fdfdfd;border-radius:6px;box-shadow:0 1px 3px #0000000d;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:12px;min-height:40px}button{padding:4px 10px;font-size:12px;font-weight:600;color:#fff;background-color:#517ba8;border:none;border-radius:6px;cursor:pointer;transition:background .2s ease,transform .1s ease;align-self:center;max-width:128rem;white-space:nowrap}button:hover{background-color:#0056b3;transform:translateY(-1px)}button:active{background-color:#00408d;transform:translateY(0)}button:disabled{background-color:#ccc;cursor:not-allowed;opacity:.7}.delete-module-button button{background-color:#dc3545}.delete-module-button button:hover{background-color:#a71d2a}input[type=text],input[type=number],input[type=email],textarea,select{padding:4px 8px;font-size:12px;border:1px solid #ccc;border-radius:6px;background-color:#fff;color:#333;width:auto;max-width:128rem;align-self:center;box-sizing:border-box}input:focus,textarea:focus,select:focus{border-color:#007bff;box-shadow:0 0 4px #007bff66;outline:none}input::placeholder,textarea::placeholder{color:#999;opacity:1}