:root{--primary: #1a73e8;--primary-hover: #185abc;--primary-bg: #e8f0fe;--surface: #ffffff;--on-surface: #3c4043;--on-surface-variant: #70757a;--outline: #dadce0;--surface-container: #ffffff;--surface-variant: #f1f3f4;--radius-xs: 4px;--radius-s: 8px;--radius-m: 12px;--radius-l: 16px;--radius-xl: 28px;--elevation-1: 0 1px 2px 0 rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);--elevation-2: 0 1px 2px 0 rgba(60, 64, 67, .3), 0 2px 6px 2px rgba(60, 64, 67, .15);font-family:Google Sans,Roboto,Arial,sans-serif;line-height:1.5;background-color:var(--surface);color:var(--on-surface)}body{margin:0;overflow:hidden;-webkit-font-smoothing:antialiased}#root{display:flex;flex-direction:column;height:100vh}.app-header{height:64px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--outline);background:linear-gradient(to right,#fff,#f8f9fa);box-shadow:0 1px 3px #0000000d;z-index:10}.header-left{display:flex;align-items:center;gap:20px}.logo{font-size:1.375rem;color:#5f6368;font-weight:400;letter-spacing:-.5px}.app-body{display:flex;flex:1;overflow:hidden}.sidebar{width:256px;padding:16px 8px;display:flex;flex-direction:column;gap:24px;background-color:var(--surface);border-right:1px solid var(--outline)}.create-btn{height:44px;padding:0 20px;background-color:var(--primary-bg);color:var(--primary);border:1px solid transparent;border-radius:22px;display:inline-flex;align-items:center;gap:8px;font-weight:500;cursor:pointer;box-shadow:0 1px 2px #0000000d;width:fit-content;margin-left:16px;transition:all .2s}.create-btn:hover{background-color:#d1e3fa;box-shadow:0 1px 3px #0000001a;border-color:#bbdefb}.calendar-view{flex:1;display:flex;flex-direction:column;overflow:hidden;background-color:var(--surface)}.grid-header{display:grid;grid-template-columns:64px repeat(7,1fr);border-bottom:1px solid var(--outline)}.grid-scroll-area{flex:1;display:grid;grid-template-columns:64px repeat(7,1fr);overflow-y:auto;padding-top:8px}.slot{min-height:48px;border-bottom:1px solid var(--outline);border-left:1px solid var(--outline);position:relative;display:flex;flex-direction:column;gap:2px;padding:2px;align-items:stretch}.slot:hover{background-color:#1a73e80a}.time-label{height:48px;font-size:.75rem;color:var(--on-surface-variant);text-align:right;padding-right:12px;display:flex;align-items:flex-start;justify-content:flex-end;padding-top:4px}.event-block{flex:1;min-width:0;background-color:var(--primary);color:#fff;border-radius:2px;font-size:.75rem;font-weight:400;padding:1px 4px;cursor:pointer;position:relative;overflow:hidden;min-height:18px;display:flex;flex-direction:column;box-shadow:0 1px 1px #0000001a}.event-content{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.delete-btn-small{position:absolute;top:1px;right:1px;width:14px;height:14px;background:#0003;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;cursor:pointer;opacity:0;transition:opacity .2s}.event-block:hover .delete-btn-small{opacity:1}.delete-btn-small:hover{background:#0006}.topic-item{display:flex;align-items:center;gap:12px;padding:8px 16px;border-radius:20px;margin:0 8px 4px;cursor:pointer;font-size:.875rem;color:#3c4043;transition:all .2s cubic-bezier(.4,0,.2,1);border:1px solid transparent}.topic-item:hover{background-color:#f8f9fa;border-color:#f1f3f4}.topic-item.selected{background-color:#e8f0fe;color:#1a73e8;font-weight:500}.topic-item input[type=checkbox]{width:16px;height:16px;border-radius:4px;cursor:pointer;accent-color:currentColor}.topic-controls{display:flex;gap:4px;opacity:0;transition:opacity .2s}.topic-item:hover .topic-controls{opacity:1}.topic-control-btn{padding:2px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#5f6368}.topic-control-btn:hover{background-color:#3c40431a;color:#3c4043}.modal-overlay{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:#fff;padding:24px;border-radius:8px;box-shadow:0 24px 38px 3px #00000024,0 9px 46px 8px #0000001f,0 11px 15px -7px #0003;width:448px}.input-field{width:100%;border:none;border-bottom:1px solid #e0e0e0;padding:8px 0;margin-bottom:16px;font-size:1rem;outline:none}.input-field:focus{border-bottom:2px solid var(--primary)}.button-publish{background-color:var(--primary);color:#fff;border:none;padding:8px 24px;border-radius:4px;font-weight:500;cursor:pointer}.button-flat{background:transparent;color:#5f6368;border:none;padding:8px 16px;border-radius:4px;font-weight:500;cursor:pointer}.button-flat:hover{background-color:#f1f3f4}