/* ── Reset & Base ─────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-primary:#0f1117;
  --bg-secondary:#161922;
  --bg-card:#1c1f2e;
  --bg-card-hover:#232738;
  --bg-sidebar:#12141e;
  --bg-input:#161922;
  --border:#2a2e3f;
  --text-primary:#e4e6ef;
  --text-secondary:#9299b8;
  --text-muted:#6b7294;
  --accent:#4f8cff;
  --accent-hover:#3a73e0;
  --accent-soft:rgba(79,140,255,0.12);
  --green:#2ed573;
  --green-bg:rgba(46,213,115,0.12);
  --red:#ff4757;
  --red-bg:rgba(255,71,87,0.12);
  --orange:#ffa502;
  --orange-bg:rgba(255,165,2,0.12);
  --yellow:#ffd43b;
  --yellow-bg:rgba(255,212,59,0.12);
  --purple:#a855f7;
  --purple-bg:rgba(168,85,247,0.12);
  --teal:#14b8a6;
  --teal-bg:rgba(20,184,166,0.12);
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 1px 3px rgba(0,0,0,0.3),0 1px 2px rgba(0,0,0,0.4);
  --font:'Inter','SF Pro','Segoe UI',system-ui,-apple-system,sans-serif;
}
[data-theme="light"]{
  --bg-primary:#f4f6fb;
  --bg-secondary:#ffffff;
  --bg-card:#ffffff;
  --bg-card-hover:#f0f2f8;
  --bg-sidebar:#1a1d2e;
  --bg-input:#ffffff;
  --border:#e2e5ef;
  --text-primary:#1a1d2e;
  --text-secondary:#5a6191;
  --text-muted:#9aa1c0;
  --shadow:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
}
html{font-size:15px}
body{
  font-family:var(--font);
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.5;
  min-height:100vh;
  display:flex;
}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}

/* ── Sidebar ──────────────────────────────────────────────────────────── */
.sidebar{
  width:250px;background:var(--bg-sidebar);
  border-right:1px solid var(--border);
  padding:1.5rem 1rem;
  display:flex;flex-direction:column;
  position:fixed;top:0;left:0;bottom:0;
  z-index:100;overflow-y:auto;
}
.sidebar .logo{
  font-size:1.2rem;font-weight:700;letter-spacing:-0.02em;
  margin-bottom:2rem;display:flex;align-items:center;gap:0.6rem;
}
.sidebar .logo span{color:var(--accent)}
.sidebar .logo small{font-size:0.65rem;font-weight:400;color:var(--text-muted);display:block}
.sidebar nav{display:flex;flex-direction:column;gap:0.1rem;flex:1}

.sidebar-group-header{
  display:flex;align-items:center;gap:0.5rem;
  padding:0.45rem 0.75rem;margin-top:0.35rem;
  border-radius:6px;
  color:var(--text-muted);font-size:0.68rem;font-weight:700;
  text-transform:uppercase;letter-spacing:0.05em;
  cursor:pointer;user-select:none;
  transition:color 0.15s;
}
.sidebar-group-header:hover{color:var(--text-secondary)}
.sidebar-group-header .arrow{
  margin-left:auto;font-size:0.55rem;
  transition:transform 0.2s;
}
.sidebar-group.open>.sidebar-group-header .arrow{transform:rotate(90deg)}
.sidebar-group-items{display:flex;flex-direction:column;gap:0.1rem;padding-left:0}
.sidebar-group:not(.open) .sidebar-group-items{display:none}
.sidebar nav a{
  display:flex;align-items:center;gap:0.75rem;
  padding:0.55rem 0.75rem;border-radius:8px;
  color:var(--text-secondary);text-decoration:none;
  font-size:0.9rem;font-weight:500;transition:all 0.15s;
}
.sidebar nav a:hover,.sidebar nav a.active{
  background:var(--accent-soft);color:var(--accent);
}
.sidebar nav a .icon{width:20px;text-align:center;font-size:1rem}
.sidebar-footer{
  margin-top:auto;padding-top:1.5rem;
  border-top:1px solid var(--border);
}
.user-info{display:flex;align-items:center;gap:0.6rem;margin-bottom:0.75rem}
.user-avatar{
  width:36px;height:36px;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:0.85rem;flex-shrink:0;
}
.user-name{font-size:0.85rem;font-weight:600;color:var(--text-primary)}
.user-role{font-size:0.7rem;color:var(--text-muted)}
.sidebar-link{
  display:block;padding:0.4rem 0.5rem;font-size:0.8rem;
  color:var(--text-muted);border-radius:6px;transition:color 0.15s;
}
.sidebar-link:hover{color:var(--accent);background:var(--accent-soft)}
.logout-link{color:var(--red)}
.logout-link:hover{color:var(--red);background:var(--red-bg)}

[data-theme="light"] .sidebar{
  --text-primary:#e4e6ef;
  --text-secondary:#9299b8;
  --text-muted:#6b7294;
}
[data-theme="light"] .sidebar .logo small{color:var(--text-muted)}

/* ── Main ─────────────────────────────────────────────────────────────── */
.main{margin-left:250px;flex:1;padding:1.5rem 2rem;min-width:0}
.page-header{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem;
}
.page-header h1{font-size:1.5rem;font-weight:700}
h2{font-size:1.15rem;font-weight:600}
.page-header .subtitle{font-size:0.85rem;color:var(--text-muted);margin-top:0.15rem}
.page-actions{display:flex;gap:0.5rem;align-items:center}

/* ── Grid ─────────────────────────────────────────────────────────────── */
.grid{display:grid;gap:1rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1200px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.grid-3{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}}
@media(max-width:700px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}}

/* ── Cards ────────────────────────────────────────────────────────────── */
.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.25rem;
  box-shadow:var(--shadow);
  transition:border-color 0.15s;
}
.card-header{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:1rem;padding-bottom:0.75rem;
  border-bottom:1px solid var(--border);
}
.card-title{
  font-size:0.85rem;font-weight:600;text-transform:uppercase;
  letter-spacing:0.04em;color:var(--text-secondary);
}
.card-value{font-size:2rem;font-weight:700;line-height:1.2}
.card-value .unit{font-size:0.85rem;font-weight:500;color:var(--text-muted);margin-left:0.3rem}
.stat-row{display:flex;gap:1rem;margin-top:0.6rem;flex-wrap:wrap}
.stat-item{font-size:0.8rem;color:var(--text-secondary)}
.stat-item strong{color:var(--text-primary);font-weight:600}

/* ── Buttons ──────────────────────────────────────────────────────────── */
button{font-family:var(--font);cursor:pointer}
.btn,.btn-sm,.btn-xs{
  display:inline-flex;align-items:center;gap:0.4rem;
  padding:0.5rem 1rem;border-radius:var(--radius-sm);
  font-size:0.85rem;font-weight:600;font-family:var(--font);
  border:1px solid var(--border);cursor:pointer;
  transition:all 0.15s;text-decoration:none;line-height:1.4;
  white-space:nowrap;
  background:var(--bg-card);color:var(--text-primary);
}
.btn:hover{background:var(--bg-card-hover)}
.btn-sm{padding:0.35rem 0.65rem;font-size:0.78rem}
.btn-xs{padding:0.2rem 0.5rem;font-size:0.7rem}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hover)}
.btn-secondary{background:transparent;color:var(--text-secondary);border-color:var(--border)}
.btn-secondary:hover{background:var(--bg-card-hover);color:var(--text-primary)}
.btn-success{background:var(--green);color:#fff;border-color:var(--green)}
.btn-success:hover{opacity:0.9}
.btn-danger{background:var(--red);color:#fff;border-color:var(--red)}
.btn-danger:hover{opacity:0.9}
.btn-warning{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-warning:hover{opacity:0.9}
.btn-group{display:flex;gap:0.35rem}

/* ── Tables ───────────────────────────────────────────────────────────── */
.table-wrap{overflow-x:auto;border-radius:var(--radius-sm)}
table{width:100%;border-collapse:collapse;font-size:0.85rem}
th{
  text-align:left;
  padding:0.7rem 0.75rem;
  font-weight:600;
  color:var(--text-secondary);
  font-size:0.75rem;
  text-transform:uppercase;
  letter-spacing:0.04em;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
  background:var(--bg-secondary);
}
td{
  padding:0.6rem 0.75rem;
  border-bottom:1px solid var(--border);
  color:var(--text-primary);
  vertical-align:middle;
}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg-card-hover)}

/* ── Forms ────────────────────────────────────────────────────────────── */
.form-group{margin-bottom:1rem}
.form-group label{
  display:block;font-size:0.8rem;font-weight:600;
  color:var(--text-secondary);margin-bottom:0.35rem;
  text-transform:uppercase;letter-spacing:0.03em;
}
.form-control{
  width:100%;padding:0.6rem 0.75rem;
  background:var(--bg-input);border:1px solid var(--border);
  border-radius:var(--radius-sm);color:var(--text-primary);
  font-size:0.9rem;font-family:var(--font);
  transition:border-color 0.15s;
}
.form-control:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.form-control::placeholder{color:var(--text-muted)}
select.form-control{cursor:pointer}
textarea.form-control{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media(max-width:700px){.form-row{grid-template-columns:1fr}}
.form-hint{font-size:0.75rem;color:var(--text-muted);margin-top:0.25rem}
.form-actions{
  display:flex;gap:0.75rem;
  padding-top:1.25rem;margin-top:0.5rem;
  border-top:1px solid var(--border);
}
.form-inline{display:flex;gap:0.5rem;align-items:center;flex-wrap:wrap}

/* ── Status indicators ────────────────────────────────────────────────── */
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:0.4rem}
.status-dot.green{background:var(--green)}
.status-dot.red{background:var(--red)}
.status-dot.orange{background:var(--orange)}
.status-dot.yellow{background:var(--yellow)}
.status-dot.purple{background:var(--purple)}
.status-dot.teal{background:var(--teal)}
.status-dot.blue{background:var(--accent)}
.badge{
  display:inline-flex;align-items:center;
  padding:0.15rem 0.55rem;border-radius:20px;
  font-size:0.7rem;font-weight:600;letter-spacing:0.02em;
}
.badge-red{background:var(--red-bg);color:var(--red)}
.badge-green{background:var(--green-bg);color:var(--green)}
.badge-orange{background:var(--orange-bg);color:var(--orange)}
.badge-yellow{background:var(--yellow-bg);color:var(--yellow)}
.badge-purple{background:var(--purple-bg);color:var(--purple)}
.badge-teal{background:var(--teal-bg);color:var(--teal)}
.badge-blue{background:var(--accent-soft);color:var(--accent)}

/* ── Alerts ───────────────────────────────────────────────────────────── */
.alert{
  padding:0.75rem 1rem;border-radius:var(--radius-sm);
  font-size:0.85rem;margin-bottom:1rem;
  border:1px solid transparent;
}
.alert-info{background:var(--accent-soft);color:var(--accent);border-color:rgba(79,140,255,0.2)}
.alert-success{background:var(--green-bg);color:var(--green);border-color:rgba(46,213,115,0.2)}
.alert-danger{background:var(--red-bg);color:var(--red);border-color:rgba(255,71,87,0.2)}
.alert-warning{background:var(--orange-bg);color:var(--orange);border-color:rgba(255,165,2,0.2)}

/* ── Modal ────────────────────────────────────────────────────────────── */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:200;
  background:rgba(0,0,0,0.6);
  align-items:center;justify-content:center;
}
.modal-overlay.active{display:flex}
.modal{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:1.5rem;
  max-width:500px;width:90%;box-shadow:var(--shadow);
}
.modal h3{margin-bottom:0.75rem}
.modal-actions{display:flex;gap:0.5rem;margin-top:1rem;justify-content:flex-end}

/* ── Pagination ───────────────────────────────────────────────────────── */
.pagination{display:flex;gap:0.35rem;margin-top:1rem;justify-content:center}
.pagination a,.pagination span{
  padding:0.4rem 0.7rem;border-radius:var(--radius-sm);
  font-size:0.8rem;border:1px solid var(--border);color:var(--text-secondary);
  text-decoration:none;transition:all 0.15s;
}
.pagination a:hover{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.pagination .active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ── Filters / Search bar ─────────────────────────────────────────────── */
.search-bar{
  display:flex;gap:0.5rem;align-items:center;flex-wrap:wrap;
  padding:1rem;background:var(--bg-secondary);
  border-radius:var(--radius-sm);margin-bottom:1rem;
  border:1px solid var(--border);
}
.search-bar .form-control{max-width:280px}
.search-bar .form-group{margin-bottom:0}
.table-count{font-size:0.8rem;color:var(--text-muted);margin-top:0.5rem}

/* ── Detail view ──────────────────────────────────────────────────────── */
.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.detail-field{margin-bottom:0.75rem}
.detail-field .detail-label{
  font-size:0.7rem;text-transform:uppercase;letter-spacing:0.04em;
  color:var(--text-muted);font-weight:600;margin-bottom:0.15rem;
}
.detail-field .detail-value{font-size:0.95rem;color:var(--text-primary)}
.detail-field .detail-value pre{margin:0;white-space:pre-wrap;font-size:0.8rem;max-height:200px;overflow-y:auto}
@media(max-width:700px){.detail-grid{grid-template-columns:1fr}}

/* ── Login ────────────────────────────────────────────────────────────── */
.login-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:var(--bg-primary);margin-left:0;
}
.login-card{
  width:400px;max-width:90%;padding:2.5rem;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.login-card .logo{text-align:center;margin-bottom:2rem}
.login-card .logo h2{font-size:1.5rem;font-weight:700}
.login-card .logo h2 span{color:var(--accent)}
.login-card .logo p{font-size:0.8rem;color:var(--text-muted);margin-top:0.25rem}
.login-card .form-group{margin-bottom:1.25rem}
.login-card .btn-primary{width:100%;padding:0.7rem;font-size:0.95rem}
.login-card .error{text-align:center;padding:0.5rem;margin-bottom:1rem}

/* ── Audit log ────────────────────────────────────────────────────────── */
.audit-entry{
  padding:0.5rem 0;border-bottom:1px solid var(--border);
  font-size:0.8rem;display:flex;gap:0.6rem;align-items:flex-start;
}
.audit-entry:last-child{border-bottom:none}
.audit-entry .action-badge{
  flex-shrink:0;min-width:60px;text-align:center;
  font-size:0.65rem;font-weight:700;padding:0.15rem 0.4rem;
  border-radius:4px;text-transform:uppercase;letter-spacing:0.04em;
}
.action-badge.insert{background:var(--green-bg);color:var(--green)}
.action-badge.update{background:var(--accent-soft);color:var(--accent)}
.action-badge.delete{background:var(--red-bg);color:var(--red)}
.audit-entry .audit-details{flex:1;min-width:0}
.audit-entry .audit-table{font-weight:600;color:var(--text-secondary)}
.audit-entry .audit-time{font-size:0.7rem;color:var(--text-muted);white-space:nowrap}

/* ── Empty state ──────────────────────────────────────────────────────── */
.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted)}
.empty-state .empty-icon{font-size:3rem;margin-bottom:0.75rem;opacity:0.4}
.empty-state p{margin-bottom:1rem}

/* ── Toast notifications ──────────────────────────────────────────────── */
.toast-container{position:fixed;top:1rem;right:1rem;z-index:999;display:flex;flex-direction:column;gap:0.5rem}
.toast{
  padding:0.75rem 1rem;border-radius:var(--radius-sm);
  font-size:0.85rem;border:1px solid var(--border);
  background:var(--bg-card);box-shadow:var(--shadow);
  animation:slideIn 0.25s ease-out;max-width:400px;
}
.toast.success{border-left:3px solid var(--green)}
.toast.error{border-left:3px solid var(--red)}
.toast.info{border-left:3px solid var(--accent)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* ── Scrollbar ────────────────────────────────────────────────────────── */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}

/* ── Responsive ───────────────────────────────────────────────────────── */
.menu-toggle,.sidebar-close,.sidebar-backdrop{display:none}
@media(max-width:768px){
  .menu-toggle{
    display:flex;align-items:center;justify-content:center;
    position:fixed;top:0.6rem;left:0.6rem;z-index:300;
    width:40px;height:40px;border-radius:var(--radius-sm);
    background:var(--bg-card);border:1px solid var(--border);
    color:var(--text-primary);font-size:1.3rem;cursor:pointer;
    transition:all 0.15s;
  }
  .menu-toggle:hover{background:var(--bg-card-hover)}

  .sidebar-close{
    display:flex;align-items:center;justify-content:center;
    position:absolute;top:0.8rem;right:0.8rem;z-index:210;
    width:36px;height:36px;border-radius:50%;
    background:transparent;border:none;
    color:var(--text-muted);font-size:1.1rem;cursor:pointer;
    transition:all 0.15s;
  }
  .sidebar-close:hover{color:var(--text-primary);background:var(--accent-soft)}

  .sidebar-backdrop{
    display:none;position:fixed;inset:0;z-index:150;
    background:rgba(0,0,0,0.5);
  }
  .sidebar-backdrop.active{display:block}

  .sidebar{
    position:fixed;top:0;left:0;width:100%;height:100%;
    z-index:200;overflow-y:auto;
    transform:translateX(-100%);transition:transform 0.25s;
    border-right:none;padding:1rem 1.5rem;
  }
  .sidebar.open{transform:translateX(0)}

  .sidebar .logo{margin-bottom:1rem}
  .sidebar .logo>div{display:flex !important}
  .sidebar .logo span:first-child{font-size:1.4rem !important}

  .sidebar-group-header{display:flex;margin-top:0.75rem;font-size:0.65rem;padding:0.35rem 0.5rem}
  .sidebar-group-header .arrow{display:none}
  .sidebar-group-items{
    display:grid !important;
    grid-template-columns:1fr 1fr;
    gap:0.4rem;
  }
  .sidebar nav a{
    flex-direction:column;padding:0.7rem 0.4rem;
    text-align:center;gap:0.25rem;
    border-radius:10px;
    background:var(--bg-card);
    border:1px solid var(--border);
  }
  .sidebar nav a:hover,.sidebar nav a.active{background:var(--accent-soft);border-color:var(--accent)}
  .sidebar nav a .icon{font-size:1.4rem;width:auto}
  .sidebar nav a span:not(.icon){display:inline;font-size:0.75rem;font-weight:500}

  .sidebar-footer{flex-direction:row;flex-wrap:wrap;align-items:center;gap:0.75rem;padding-top:1rem}
  .sidebar-footer .user-info>div{display:block}

  .main{margin-left:0;padding:0.8rem;padding-top:3.5rem}
  .search-bar .form-control{max-width:100%;width:100%}
}

/* ── Notification bell ──────────────────────────────────────────── */
.notif-bell{
  position:relative;font-size:1.3rem;text-decoration:none;
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--bg-card);border:1px solid var(--border);
  transition:all 0.15s;
}
.notif-bell:hover{background:var(--bg-card-hover);border-color:var(--accent)}
.notif-badge{
  position:absolute;top:-4px;right:-4px;
  background:var(--red);color:#fff;font-size:0.6rem;font-weight:700;
  min-width:18px;height:18px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  padding:0 4px;line-height:1;
}

/* ── Tabs ──────────────────────────────────────────────────────── */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:1rem}
.tab{
  display:inline-flex;align-items:center;padding:0.6rem 1.2rem;
  font-size:0.85rem;font-weight:600;color:var(--text-muted);
  text-decoration:none;border-bottom:2px solid transparent;
  transition:all 0.15s;white-space:nowrap;
}
.tab:hover{color:var(--text-primary)}
.tab.active{color:var(--accent);border-bottom-color:var(--accent)}

/* ── Calendar / Booking ────────────────────────────────────────── */
.checkbox-label{display:flex;align-items:center;gap:0.5rem;cursor:pointer;padding:0.5rem 0}
.checkbox-label input[type="checkbox"]{width:18px;height:18px;cursor:pointer}

.calendar-wrap{overflow-x:auto;margin-bottom:1rem}
.calendar-table{width:100%;border-collapse:collapse;font-size:0.8rem}
.calendar-table th,.calendar-table td{border:1px solid var(--border);padding:4px;text-align:center;vertical-align:middle}
.calendar-table th{background:var(--bg-card-hover);font-weight:600}
.cal-room-col{text-align:left !important;white-space:nowrap;padding:4px 8px !important;min-width:140px}
.cal-day-col{min-width:36px;line-height:1.2}
.cal-day-num{display:block;font-size:0.85rem;font-weight:700}
.cal-day-name{display:block;font-size:0.65rem;font-weight:400;color:var(--text-muted)}
.cal-weekend{background:var(--bg-card-hover)}
.cal-today{box-shadow:inset 0 0 0 2px var(--accent)}
.cal-cell{padding:6px 2px !important;cursor:default}
.cal-available{background:rgba(40,167,69,0.1)}
.cal-partial{background:rgba(255,193,7,0.12)}
.cal-booked{background:rgba(220,53,69,0.1)}
.booking-legend .status-dot{vertical-align:middle;margin-right:4px}