:root{font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:#18202a;background:#f4f6f8;letter-spacing:0;--primary:#1677ff;--primary-dark:#095fc6;--border:#dce2e8;--muted:#66717f;--danger:#c73737;--green:#15805d}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,textarea{font:inherit}button,a{letter-spacing:0}.hidden{display:none!important}.muted{color:var(--muted)}.error{min-height:20px;color:var(--danger);font-size:13px}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:#eef2f6}.login-panel{width:min(400px,100%);background:#fff;border:1px solid var(--border);border-radius:8px;padding:36px;box-shadow:0 16px 50px rgba(28,43,60,.08)}.login-panel h1{font-size:24px;margin:18px 0 6px}.login-panel form{display:grid;gap:16px;margin-top:28px}.brand-mark{width:48px;height:48px;border-radius:8px;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:800;font-size:22px}.brand-mark.small{width:34px;height:34px;font-size:16px}.topbar{height:64px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}.brand,.top-actions,.month-nav{display:flex;align-items:center;gap:12px}.top-actions{font-size:14px}.provider-badge{padding:4px 8px;border:1px solid #b8e0d2;background:#effaf6;color:var(--green);border-radius:4px;font-size:12px}.workspace{max-width:1440px;margin:0 auto;padding:24px 28px 40px}.calendar-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.calendar-toolbar h2{font-size:22px;margin:0 0 0 8px}.summary-strip{display:flex;gap:28px;align-items:center;background:#fff;border:1px solid var(--border);border-bottom:0;padding:12px 16px;color:var(--muted);font-size:13px}.summary-strip b{color:var(--primary);font-size:18px;margin-right:5px}.calendar-frame{background:#fff;border:1px solid var(--border);overflow:hidden}.weekdays,.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr))}.weekdays{height:40px;align-items:center;text-align:center;border-bottom:1px solid var(--border);color:var(--muted);font-size:12px;background:#fafbfc}.day-cell{min-height:128px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);padding:8px;overflow:hidden}.day-cell:nth-child(7n){border-right:0}.day-cell.outside{background:#fafbfc;color:#aab2bc}.day-number{width:28px;height:28px;display:grid;place-items:center;font-size:13px}.day-cell.today .day-number{border-radius:50%;background:var(--primary);color:#fff;font-weight:700}.day-cell.drop-target{background:#edf5ff}.booking-pill{width:100%;display:block;border:0;border-left:3px solid var(--primary);background:#eaf3ff;color:#173e6c;padding:5px 6px;margin-top:4px;text-align:left;border-radius:3px;overflow:hidden;cursor:pointer}.booking-pill.occupied{border-left-color:#a7b0bb;background:#f0f2f4;color:#586270;cursor:default}.booking-pill.failed{border-left-color:var(--danger);background:#fff0f0;color:#8f2727}.booking-pill.pending,.booking-pill.creating,.booking-pill.update_pending,.booking-pill.cancel_pending{border-left-color:#d68500;background:#fff6df;color:#7b510b}.booking-time,.booking-title{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.booking-time{font-size:10px;opacity:.75}.booking-title{font-size:12px;font-weight:600;margin-top:2px}label{display:grid;gap:7px;color:#394451;font-size:13px}input,textarea{width:100%;border:1px solid #cdd4dc;border-radius:5px;padding:10px 11px;background:#fff;color:#18202a;outline:none}input:disabled,textarea:disabled{background:#f2f4f6;color:#596473}input:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,119,255,.12)}button,.secondary{border:1px solid transparent;border-radius:5px;min-height:36px;padding:7px 13px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;color:inherit;background:#fff}button:disabled{cursor:not-allowed;opacity:.55}.primary{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}.primary:hover{background:var(--primary-dark)}.secondary{border-color:#cdd4dc;background:#fff}.secondary:hover{background:#f6f8fa}.danger{border-color:#efc4c4;color:var(--danger);background:#fff}.icon-button{width:36px;height:36px;padding:0;border-color:#d7dde4;background:#fff;font-size:22px}.wide{width:100%;margin-top:4px}dialog{width:min(620px,calc(100% - 32px));border:0;border-radius:8px;padding:0;box-shadow:0 24px 70px rgba(14,27,42,.26)}dialog::backdrop{background:rgba(16,28,41,.42)}#bookingForm,.user-dialog{padding:24px;display:grid;gap:18px}.dialog-header{display:flex;justify-content:space-between;align-items:flex-start;border-bottom:1px solid var(--border);padding-bottom:16px}.dialog-header h2{margin:0;font-size:20px}.dialog-header p{margin:5px 0 0;color:var(--muted);font-size:13px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;border-top:1px solid var(--border);padding-top:16px}.meeting-details{background:#f4f8fc;border:1px solid #d5e2ef;border-radius:5px;padding:12px;font-size:13px;line-height:1.8;word-break:break-all}.user-form{display:grid;grid-template-columns:1fr 1fr 1fr auto;align-items:end;gap:10px}.user-list{border:1px solid var(--border);border-radius:5px;overflow:hidden}.user-row{display:grid;grid-template-columns:1fr 1fr 90px;gap:12px;padding:10px 12px;border-bottom:1px solid var(--border);font-size:13px}.user-row:last-child{border-bottom:0}.toast{position:fixed;right:24px;bottom:24px;max-width:380px;background:#18202a;color:#fff;padding:12px 16px;border-radius:5px;box-shadow:0 10px 30px rgba(0,0,0,.2);opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s;z-index:100}.toast.show{opacity:1;transform:translateY(0)}@media(max-width:760px){.topbar{padding:0 8px}.brand strong{display:none}.provider-badge{display:none}.workspace{padding:16px 10px 32px}.calendar-toolbar{align-items:flex-start;gap:12px}.month-nav{gap:5px;flex-wrap:wrap}.calendar-toolbar h2{font-size:18px}.summary-strip{overflow-x:auto;gap:18px;white-space:nowrap}.weekdays span{font-size:11px}.day-cell{min-height:92px;padding:4px}.booking-pill{padding:4px}.booking-time{display:none}.form-grid,.user-form{grid-template-columns:1fr}.top-actions #userName{display:none}.top-actions{gap:4px;font-size:12px}.top-actions .secondary{padding:4px 6px}.login-panel{padding:26px 22px}.dialog-actions{flex-wrap:wrap}.dialog-actions button{flex:1}.calendar-grid{min-width:700px}.weekdays{min-width:700px}.calendar-frame{overflow-x:auto}}