*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1f2937;background:#f9fafb}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#0f172a;color:#fff}
.topbar .brand{font-weight:700}
.topbar .btn{background:#4f46e5;color:#fff;text-decoration:none;border:1px solid #4f46e5;padding:6px 10px;border-radius:6px}
.topbar .btn:hover{background:#4338ca;border-color:#4338ca}
.container{max-width:1000px;margin:16px auto;padding:0 12px}
.intro h1{margin:0 0 6px 0;font-size:22px}
.calendar-controls{display:flex;align-items:center;gap:12px;justify-content:center;margin:12px 0}
.calendar-controls #monthLabel{text-transform:capitalize;font-weight:600}
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.day{display:flex;align-items:center;justify-content:center;aspect-ratio:1/1;background:#fff;border:1px solid #e5e7eb;border-radius:8px;cursor:pointer;font-size:104%}
.day:not(.empty):not(:disabled){color:#0066cc}
.day:not(.empty):not(:disabled):hover{border-color:#0066cc}
.day:focus-visible{outline:3px solid #0066cc;outline-offset:2px}
.day.today{outline:2px solid #6366f1}
.day.selected{background:#e0e7ff;border-color:#c7d2fe}
.day.empty{border:0;background:transparent}
.day:disabled{color:#cbd5e1;cursor:not-allowed}
.availability-section{margin-top:16px}
.filters{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.slots-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.slot{display:flex;align-items:center;justify-content:space-between;background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:10px 12px;text-decoration:none;color:#111827}
.slot:hover{border-color:#6366f1}
.muted{color:#6b7280}
.loading{color:#111827}
.footer{padding:16px;text-align:center;color:#6b7280}
.btn{display:inline-block;background:#e5e7eb;color:#111827;text-decoration:none;border:1px solid #d1d5db;border-radius:6px;padding:6px 10px}
.btn.primary{background:#4f46e5;color:#fff;border-color:#4f46e5}
.btn:disabled{opacity:.5;cursor:not-allowed}
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:10px}
label{font-size:14px;color:#374151}
input,select{padding:8px;border:1px solid #d1d5db;border-radius:6px;background:#fff}
.actions{display:flex;gap:8px;align-items:center}
.alert{padding:8px 10px;border:1px solid #d1d5db;border-radius:8px;background:#f3f4f6;margin:8px 0}
.alert.error{border-color:#fecaca;background:#fee2e2;color:#b91c1c}
.table-responsive{overflow:auto}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid #e5e7eb;padding:8px;text-align:left;font-size:14px}
.table th{background:#f3f4f6}
.actions .inline{display:inline}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.auth{max-width:420px}

/* Admin */
body.admin{display:flex;min-height:100vh}
.sidebar{width:240px;background:#0f172a;color:#fff;display:flex;flex-direction:column}
.sidebar-brand{padding:16px;font-weight:700;border-bottom:1px solid #334155}
.sidebar-nav{display:flex;flex-direction:column}
.sidebar-nav a{color:#e5e7eb;text-decoration:none;padding:10px 14px;border-bottom:1px solid #1f2937}
.sidebar-nav a.active,.sidebar-nav a:hover{background:#1f2937}
.sidebar-foot{margin-top:auto;padding:12px;border-top:1px solid #334155}
.admin-main{flex:1;display:flex;flex-direction:column}
.admin-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid #e5e7eb;background:#fff}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:16px}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:12px}
.card-title{font-size:14px;color:#6b7280}
.card-value{font-size:22px;font-weight:700}
.filters-inline{display:flex;gap:8px;align-items:flex-end;flex-wrap:wrap;margin:8px 0}
.cards-admin{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:16px;padding:16px}
.card-tile{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:16px;transition:transform .2s ease, box-shadow .2s ease}
.card-tile:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.06)}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.card-head h2{margin:0;font-size:18px}
.card-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:#eef2ff;color:#4f46e5}
.admin-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}
.admin-tile{display:grid;grid-template-columns:1fr auto;align-items:center;border:1px solid #e5e7eb;border-radius:10px;padding:12px;background:#fff;transition:box-shadow .2s ease,border-color .2s ease;gap:12px}
.admin-tile:focus-visible{outline:3px solid #4f46e5;outline-offset:2px}
.admin-tile:hover{border-color:#c7d2fe;box-shadow:0 4px 14px rgba(79,70,229,.15)}
.admin-info{display:flex;flex-direction:column;min-width:0}
.admin-email{font-weight:600}
.admin-meta{font-size:12px;color:#6b7280}
.admin-actions{display:flex;align-items:center;gap:8px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #d1d5db;border-radius:8px;background:#f9fafb;color:#111827;transition:background .2s ease,border-color .2s ease,transform .1s ease}
.icon-btn:hover{background:#eef2ff;border-color:#4f46e5;color:#4f46e5}
.icon-btn:active{transform:scale(.98)}
.icon-btn.danger:hover{background:#fee2e2;border-color:#ef4444;color:#b91c1c}
.admin-password{width:clamp(120px,20vw,220px)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.alert.success{border-color:#bbf7d0;background:#dcfce7;color:#166534}
.loading-overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(255,255,255,.6);z-index:9999}
.loading-overlay.active{display:flex}
.spinner{width:28px;height:28px;border-radius:50%;border:3px solid #c7d2fe;border-top-color:#4f46e5;animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.machine-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}
.machine-tile{display:grid;grid-template-columns:1fr auto;align-items:center;border:1px solid #e5e7eb;border-radius:10px;padding:12px;background:#fff;transition:box-shadow .2s ease,border-color .2s ease;gap:12px}
.machine-tile:focus-visible{outline:3px solid #4f46e5;outline-offset:2px}
.machine-tile:hover{border-color:#c7d2fe;box-shadow:0 4px 14px rgba(79,70,229,.15)}
.machine-info{display:flex;flex-direction:column;min-width:0}
.machine-name{font-weight:600}
.machine-meta{font-size:12px;color:#6b7280}
.machine-actions{display:flex;align-items:center;gap:8px}
.badge{display:inline-block;font-size:12px;padding:2px 6px;border-radius:999px;border:1px solid #d1d5db;margin-left:6px}
.badge.on{background:#dcfce7;border-color:#bbf7d0;color:#166534}
.badge.off{background:#fee2e2;border-color:#fecaca;color:#b91c1c}
.cfg-grid .form-inline{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cfg-grid .form-inline .actions{grid-column:1/-1}
.cfg-grid .admin-email{overflow-wrap:anywhere}
@media (min-width:1366px) and (max-width:1536px){
  .cfg-grid{grid-template-columns:420px 1fr}
}
@media (min-width:1537px) and (max-width:1919px){
  .cfg-grid{grid-template-columns:460px 1fr}
}
@media (min-width:1920px){
  .cfg-grid{grid-template-columns:520px 1fr}
}
@media (max-width:1024px){
  .cfg-grid{grid-template-columns:1fr}
  .cfg-grid .form-inline{grid-template-columns:1fr}
}
.disp-grid .form-inline{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.disp-grid .form-inline .actions{grid-column:1/-1}
.disp-grid .disp-table .table th,.disp-grid .disp-table .table td{font-size:clamp(12px,1vw,14px)}
.disp-grid .disp-table{max-height:65vh;overflow:auto}
@media (min-width:1366px) and (max-width:1536px){
  .disp-grid{grid-template-columns:420px 1fr}
  .disp-grid .form-inline{grid-template-columns:1fr 1fr}
}
@media (min-width:1537px) and (max-width:1919px){
  .disp-grid{grid-template-columns:460px 1fr}
}
@media (min-width:1920px){
  .disp-grid{grid-template-columns:520px 1fr}
}
@media (max-width:1024px){
  .disp-grid{grid-template-columns:1fr}
  .disp-grid .form-inline{grid-template-columns:1fr}
}

@media (max-width:1024px){
  .grid-2{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
  .cards-admin{grid-template-columns:repeat(2,1fr)}
  .admin-tiles{grid-template-columns:1fr}
}
@media (max-width:768px){
  .calendar-grid{grid-template-columns:repeat(7,1fr)}
  .slots-list{grid-template-columns:1fr}
  body.admin{flex-direction:column}
  .cards-admin{grid-template-columns:1fr}
  .admin-password{width:140px}
  .sidebar{width:100%;flex-direction:row;overflow:auto}
  .sidebar{width:100%;flex-direction:row;overflow:auto}
  .sidebar-nav{flex-direction:row}
  .sidebar-nav a{border-bottom:0;border-right:1px solid #1f2937}
  .admin-main{flex:1}
  .cards{grid-template-columns:1fr}
}