*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;background:#f4f2ed;color:#1a1a18;min-height:100vh;line-height:1.5}
a{color:inherit}.wrap{max-width:1120px;margin:0 auto;padding:1.5rem 1rem}.wrap-narrow{max-width:480px;margin:0 auto;padding:1.5rem 1rem}
h1{font-size:22px;font-weight:700;margin-bottom:4px}h2{font-size:19px;font-weight:700;margin-bottom:8px}h3{font-size:16px;margin-bottom:10px}.sub{font-size:14px;color:#777;margin-bottom:1.5rem}p{font-size:15px}.center{text-align:center}.muted{color:#888}
.topnav{border-bottom:1px solid #e0ddd6;background:#fff}.topnav-inner{max-width:1120px;margin:0 auto;padding:14px 1rem;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{font-weight:700;font-size:17px;text-decoration:none;color:#1a1a18}.nav-links{display:flex;gap:18px;align-items:center;font-size:14px}.nav-links a{text-decoration:none;color:#555}.nav-links a:hover{color:#1a1a18}
.layout{display:grid;grid-template-columns:260px 1fr;gap:16px;align-items:start}.side{position:sticky;top:14px;z-index:3}.side .card{position:relative}.main{min-width:0}
.card{background:#fff;border:1px solid #e0ddd6;border-radius:8px;padding:1.25rem;margin-bottom:1rem}.card-title{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.auth-card{background:#fff;border:1px solid #e0ddd6;border-radius:8px;padding:2rem}.auth-switch{text-align:center;font-size:14px;color:#666;margin-top:16px}.auth-switch a{color:#2563eb;font-weight:600;text-decoration:none}
.field{margin-bottom:14px}label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;color:#444}.checkbox-row{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:400;color:#1a1a18}.checkbox-row input{width:16px;height:16px}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{width:100%;padding:10px 12px;border:1px solid #d0cdc6;border-radius:8px;font-size:14px;outline:none;background:#fff;color:#1a1a18;font-family:inherit}input:focus,select:focus,textarea:focus{border-color:#2563eb}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid #d0cdc6;border-radius:8px;background:transparent;color:#1a1a18;font-size:14px;cursor:pointer;transition:background .15s,color .15s,border-color .15s;text-decoration:none}.btn:hover{background:#f0ede6}.btn-primary{background:#1a1a18;color:#fff;border-color:transparent;font-weight:600}.btn-primary:hover{background:#333}.btn-danger{color:#c0392b;border-color:#f0c0bc}.btn-danger:hover{background:#fff0ee}.btn-sm{padding:5px 11px;font-size:13px}.btn-block{width:100%}.btn[disabled]{opacity:.55;cursor:not-allowed}.btn.copied{background:#e5e7eb;border-color:#d1d5db;color:#4b5563;opacity:1}
.step-nav{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px}.settings-row{display:flex;gap:16px;flex-wrap:wrap;align-items:flex-end}.settings-col{min-width:180px}.settings-col.grow{flex:1;min-width:240px}.status-toggle{height:41px;align-items:center}
.tabs{display:flex;gap:0;border-bottom:2px solid #e0ddd6;margin-bottom:1rem;flex-wrap:wrap}.tab{padding:9px 20px;font-size:14px;font-weight:500;cursor:pointer;border:none;background:transparent;color:#888;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .15s}.tab.active{color:#1a1a18;border-bottom-color:#1a1a18}.panel{display:none}.panel.active{display:block}
.calendar-list{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.calendar-item{width:100%;border:1px solid #e0ddd6;background:#fff;border-radius:8px;padding:10px 12px;text-align:left;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px}.calendar-item:hover{background:#f8f6f1}.calendar-item.active{border-color:#1a1a18;background:#f4f2ed}.calendar-item span{font-weight:600}.calendar-item small{font-size:12px;color:#888}.calendar-title{display:flex;align-items:center;gap:7px;min-width:0}.change-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#dc2626;flex:0 0 auto}
.side-share{margin-top:12px;border-top:1px solid #e0ddd6;padding-top:10px}.side-share summary{list-style:none;display:flex;align-items:center;gap:8px;width:100%;border:1px solid transparent;border-radius:8px;padding:7px 8px;color:#666;font-size:13px;font-weight:600;cursor:pointer;user-select:none}.side-share summary::-webkit-details-marker{display:none}.side-share summary:hover{background:#f8f6f1;color:#1a1a18}.share-icon{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border:1px solid #d0cdc6;border-radius:6px;background:#fff;color:#555;font-size:13px;line-height:1}.side-share[open] summary{background:#f4f2ed;color:#1a1a18}.side-share-body{position:absolute;left:calc(100% + 12px);bottom:0;width:380px;max-width:calc(100vw - 340px);background:#fff;border:1px solid #e0ddd6;border-radius:8px;padding:1rem;box-shadow:0 14px 36px rgba(26,26,24,.12);transform:translateX(-8px);opacity:0;animation:shareFlyout .16s ease-out forwards}.share-close{top:8px;right:8px}.compact-link{display:grid;grid-template-columns:1fr auto;gap:8px;padding:9px}.compact-link .btn{white-space:nowrap}@keyframes shareFlyout{to{transform:translateX(0);opacity:1}}
.grid-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.schedule-grid{border-collapse:collapse;font-size:13px;min-width:640px;width:100%}.schedule-grid th{background:#f4f2ed;font-weight:600;padding:8px 12px;border:1px solid #e0ddd6;text-align:center;white-space:nowrap}.schedule-grid td{border:1px solid #e0ddd6;padding:4px}.time-label{font-weight:600;font-size:13px;color:#555;padding:8px 12px;white-space:nowrap;text-align:right}
.slot{width:100%;height:36px;border-radius:6px;border:1.5px solid #d0cdc6;background:#fff;cursor:pointer;font-size:13px;display:flex;align-items:center;justify-content:center;transition:all .15s;user-select:none;color:#aaa;padding:0 6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.slot:hover{border-color:#888;background:#f4f2ed}.slot.on-teacher{background:#2563eb;border-color:#2563eb;color:#fff;font-weight:600}.slot.slot-partial{background:#1d4ed8;border-color:#1d4ed8}.slot.selected{background:#111827;border-color:#111827;color:#fff;font-weight:700}.slot.booked,.slot.manual-blocked{background:#dcfce7;border-color:#86efac;color:#166534;font-weight:700}.slot.booked{cursor:not-allowed}.slot.manual-blocked{cursor:pointer}.slot:disabled{cursor:not-allowed;background:repeating-linear-gradient(45deg,#f4f2ed,#f4f2ed 5px,#eae7e0 5px,#eae7e0 10px);border-color:#e0ddd6;opacity:.75;color:#777}
.link-box{display:flex;gap:8px;align-items:center;background:#f4f2ed;border:1px solid #e0ddd6;border-radius:8px;padding:10px 12px;font-size:13px;word-break:break-all}.link-box span{flex:1}.hint{font-size:12px;color:#999;margin-top:8px}.soft-line{border:none;border-top:1px solid #e0ddd6;margin:18px 0}
.info-box{background:#eff6ff;border:1px solid #bfdbfe;color:#1e3a8a;border-radius:8px;padding:10px 12px;font-size:13px;margin-bottom:12px}.selected-summary{display:flex;flex-wrap:wrap;gap:8px;min-height:36px;margin-bottom:14px;color:#777}.selected-summary span{display:inline-flex;align-items:center;background:#111827;color:#fff;border-radius:999px;padding:5px 10px;font-size:13px;font-weight:700}.consent-row{align-items:flex-start;margin:4px 0 14px}.consent-row a{color:#2563eb;font-weight:700}.privacy-text{display:grid;gap:10px;color:#444}.privacy-text p{font-size:14px}
.booking-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid #eee}.booking-row:last-child{border-bottom:none}.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:600}.badge-green{background:#dcfce7;color:#166534}.badge-orange{background:#ffedd5;color:#9a3412}.badge-white{background:#f4f2ed;color:#666;border:1px solid #e0ddd6}
.room-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.teacher-card{display:flex;min-height:112px;flex-direction:column;justify-content:space-between;gap:16px;background:#fff;border:1px solid #e0ddd6;border-radius:8px;padding:18px;text-decoration:none;transition:border-color .15s,box-shadow .15s,transform .15s}.teacher-card:hover{border-color:#1a1a18;box-shadow:0 10px 26px rgba(26,26,24,.08);transform:translateY(-1px)}.teacher-card strong{font-size:17px;line-height:1.25;overflow-wrap:anywhere}.teacher-card span{font-size:13px;color:#2563eb;font-weight:700}
.alert{padding:12px 16px;border-radius:8px;font-size:14px;margin-bottom:12px}.alert-ok{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}.alert-err{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}.error-box{background:#fee2e2;color:#991b1b;border:1px solid #fecaca;border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:14px;display:none}.success-box{background:#dcfce7;color:#166534;border:1px solid #bbf7d0;border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:14px;display:none}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid #ddd;border-top-color:#1a1a18;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{display:flex;align-items:center;gap:10px;color:#888;font-size:14px;padding:2rem;justify-content:center}
.modal-backdrop{position:fixed;inset:0;background:rgba(20,18,15,.55);align-items:center;justify-content:center;padding:1rem;z-index:50}.modal{position:relative;background:#fff;border-radius:8px;width:100%;max-width:460px;max-height:min(760px,90vh);overflow:auto;padding:1.5rem;box-shadow:0 18px 50px rgba(0,0,0,.2)}.modal-wide{max-width:680px}.modal-close{position:absolute;top:10px;right:10px;width:30px;height:30px;border:1px solid #e0ddd6;background:#fff;border-radius:50%;cursor:pointer;color:#777}
.admin-table{width:100%;border-collapse:collapse;font-size:13px}.admin-table th{background:#f4f2ed;text-align:left;padding:9px 10px;border:1px solid #e0ddd6;white-space:nowrap}.admin-table td{padding:9px 10px;border:1px solid #e0ddd6;vertical-align:middle}.table-card{overflow-x:auto}.status-btn{border:1px solid #d0cdc6;border-radius:6px;padding:4px 10px;font-size:12px;cursor:pointer;font-weight:600}
@media(max-width:900px){.side-share-body{left:0;right:0;bottom:auto;top:calc(100% + 10px);width:auto;max-width:none;transform:translateY(-8px);animation:shareDrop .16s ease-out forwards}.compact-link{grid-template-columns:1fr}.compact-link .btn{width:100%}@keyframes shareDrop{to{transform:translateY(0);opacity:1}}}
@media(max-width:760px){.wrap{padding:1rem .75rem}.layout{grid-template-columns:1fr}.side{position:static}.topnav-inner{align-items:flex-start;flex-direction:column}.nav-links{width:100%;flex-wrap:wrap;gap:10px}.settings-row{display:grid;grid-template-columns:1fr}.settings-col,.settings-col.grow{min-width:0}.step-nav{display:grid;grid-template-columns:1fr}.btn{width:100%}.btn-sm{width:auto}.tabs{display:grid;grid-template-columns:1fr 1fr}.tab{padding:10px 8px}.card{padding:1rem}.auth-card{padding:1.25rem}.schedule-grid{min-width:560px}.link-box{display:grid;grid-template-columns:1fr}.link-box .btn{width:100%}.booking-row{align-items:flex-start;flex-direction:column}.booking-row .btn{width:100%}.room-grid{grid-template-columns:1fr}.teacher-card{min-height:96px}}