/* ══ Reset ════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ══ Design Tokens ════════════════════════════════════ */
:root {
  --sb-w:  264px;
  --tb-h:  64px;

  /* Sidebar */
  --sb-bg:          #0d1117;
  --sb-surface:     rgba(255,255,255,.025);
  --sb-border:      rgba(255,255,255,.07);
  --sb-text:        #e2e8f0;
  --sb-text-hover:  #ffffff;
  --sb-active-bg:   rgba(99,102,241,.16);
  --sb-active-color:#a5b4fc;
  --sb-active-line: #6366f1;

  /* Content */
  --bg:        #f0f4f8;
  --card:      #ffffff;
  --bg-subtle: #f8fafc;

  /* Brand — Indigo */
  --indigo:      #6366f1;  --indigo-d:  #4f46e5;  --indigo-l:  #eef2ff;
  --indigo-glow: rgba(99,102,241,.18);

  /* Status */
  --emerald: #059669;  --emerald-l: #ecfdf5;  --emerald-d: #047857;
  --crimson: #e11d48;  --crimson-l: #fff1f2;  --crimson-d: #be123c;
  --amber:   #d97706;  --amber-l:   #fffbeb;  --amber-d:   #b45309;
  --sky:     #0284c7;  --sky-l:     #f0f9ff;
  --violet:  #7c3aed;  --violet-l:  #f5f3ff;
  --teal:    #0d9488;  --teal-l:    #f0fdfa;
  --rose:    #e11d48;  --rose-l:    #fff1f2;

  /* Text */
  --t1: #0f172a;  --t2: #475569;  --t3: #94a3b8;  --t4: #cbd5e1;

  /* Borders */
  --border:   #e2e8f0;
  --border-d: #cbd5e1;

  /* Elevation */
  --sh-xs:   0 1px 2px rgba(15,23,42,.04);
  --sh-sm:   0 2px 6px rgba(15,23,42,.06);
  --sh:      0 4px 14px rgba(15,23,42,.07);
  --sh-md:   0 8px 24px rgba(15,23,42,.09);
  --sh-lg:   0 20px 48px rgba(15,23,42,.13);
  --sh-card: 0 1px 3px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);

  /* Radius */
  --r-xs: 4px;  --r-sm: 6px;  --r: 10px;
  --r-lg: 14px; --r-xl: 20px; --r-2xl: 28px; --r-full: 9999px;

  /* Motion */
  --ease: cubic-bezier(.4,0,.2,1);
  --dur:  140ms;
}

/* ══ Dark Mode ══════════════════════════════════════ */
html.dark {
  --bg:        #0f172a;
  --card:      #1e293b;
  --bg-subtle: #1e293b;
  --bg2:       #1e293b;

  --t1: #f1f5f9;
  --t2: #94a3b8;
  --t3: #64748b;
  --t4: #334155;

  --border:   #334155;
  --border-d: #475569;

  --indigo-l:  rgba(99,102,241,.18);
  --emerald-l: rgba(5,150,105,.15);
  --crimson-l: rgba(225,29,72,.15);
  --amber-l:   rgba(217,119,6,.15);
  --sky-l:     rgba(2,132,199,.15);
  --violet-l:  rgba(124,58,237,.15);
  --teal-l:    rgba(13,148,136,.15);
  --rose-l:    rgba(225,29,72,.15);

  --sh-xs:   0 1px 2px rgba(0,0,0,.3);
  --sh-sm:   0 2px 6px rgba(0,0,0,.4);
  --sh:      0 4px 14px rgba(0,0,0,.5);
  --sh-md:   0 8px 24px rgba(0,0,0,.6);
  --sh-card: 0 1px 3px rgba(0,0,0,.4), 0 1px 2px rgba(0,0,0,.3);
  color-scheme: dark;
}

html.dark body                   { background: var(--bg); color: var(--t1); }
html.dark .card                  { background: var(--card); border-color: var(--border); }
html.dark .modal                 { background: var(--card); }
html.dark .modal-header          { background: var(--card); border-color: var(--border); }
html.dark .modal-footer          { background: var(--card); border-color: var(--border); }
html.dark .form-control          { background: #0f172a; color: var(--t1); border-color: var(--border); }
html.dark .form-control:focus    { background: #0f172a; color: var(--t1); border-color: var(--indigo); }
html.dark .filter-select         { background: #0f172a; color: var(--t1); border-color: var(--border); }
html.dark select option          { background: #1e293b; color: var(--t1); }
html.dark .topbar                { background: #1e293b; border-color: var(--border); }
html.dark .section               { background: transparent; }
html.dark .toolbar               { background: var(--card); border-color: var(--border); }
html.dark table                  { background: var(--card); }
html.dark thead tr               { background: #1e293b !important; }
html.dark tbody tr:hover         { background: rgba(99,102,241,.07); }
html.dark tbody td               { border-color: var(--border); color: var(--t1); }
html.dark .modal-overlay         { background: rgba(0,0,0,.7); }
html.dark .btn-outline           { background: transparent; color: var(--t2); border-color: var(--border); }
html.dark .btn-outline:hover     { background: rgba(255,255,255,.06); border-color: var(--indigo); color: var(--indigo); }
html.dark .btn-ghost             { color: var(--t2); }
html.dark .btn-ghost:hover       { background: rgba(255,255,255,.06); color: var(--t1); }
html.dark .search-input          { background: #0f172a; color: var(--t1); border-color: var(--border); }
html.dark .search-input::placeholder { color: var(--t3); }
html.dark .empty-state           { color: var(--t3); }
html.dark .badge-gray            { background: #334155; color: var(--t2); }
html.dark input[type="date"],
html.dark input[type="month"],
html.dark input[type="text"],
html.dark input[type="number"],
html.dark input[type="email"],
html.dark input[type="tel"],
html.dark textarea               { background: #0f172a; color: var(--t1); border-color: var(--border); }
html.dark .table-wrap            { background: var(--card); }
html.dark #dark-toggle           { color: #facc15; }

/* ══ Base ════════════════════════════════════════════ */
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, Roboto, sans-serif;
  background: var(--bg);
  color: var(--t1);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ══ App Shell ═══════════════════════════════════════ */
.app-wrap { display: flex; height: 100vh; overflow: hidden; }

/* ══ Sidebar ═════════════════════════════════════════ */
.sidebar {
  width: var(--sb-w);
  min-width: var(--sb-w);
  background: var(--sb-bg);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  border-right: 1px solid var(--sb-border);
  position: relative;
  z-index: 10;
  transition: transform var(--dur) var(--ease);
}
.sidebar::-webkit-scrollbar { display: none; }

/* Nav scroll wrapper — flex:1 so it fills space between brand and footer */
.sb-nav {
  flex: 1 1 0;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.sb-nav::-webkit-scrollbar { display: none; }

/* Brand */
.sb-brand {
  padding: 20px 16px 16px;
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--sb-border);
}
.sb-logo {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, #6366f1, #4338ca);
  border-radius: var(--r);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(99,102,241,.45);
}
.sb-name { color: #f1f5f9; font-size: 14px; font-weight: 700; letter-spacing: -.3px; line-height: 1.2; }
.sb-ver  { color: #475569; font-size: 10.5px; margin-top: 2px; }

/* Sidebar branch switcher */
.sb-switcher-wrap {
  padding: 10px 12px;
  border-bottom: 1px solid var(--sb-border);
}
.sb-switcher-label {
  font-size: 9.5px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: #cbd5e1; margin-bottom: 5px;
}
.sb-hostel-switcher {
  width: 100%;
  padding: 7px 28px 7px 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-sm);
  color: #f1f5f9;
  font-size: 12.5px; font-weight: 600;
  cursor: pointer; outline: none; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  transition: border-color .15s, background .15s;
}
.sb-hostel-switcher:hover  { background-color: rgba(255,255,255,.10); border-color: rgba(255,255,255,.22); }
.sb-hostel-switcher:focus  { border-color: var(--indigo); box-shadow: 0 0 0 2px var(--indigo-glow); }
.sb-hostel-switcher option { background: #1e293b; color: #f1f5f9; }

/* Nav section */
.sb-section { padding: 8px 8px 2px; }
.sb-section + .sb-section { margin-top: 2px; }
.sb-section-label {
  font-size: 10px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  color: #334155;
  padding: 4px 10px 6px;
}

/* ── Collapsible sidebar groups ── */
.sb-group { border-bottom: 1px solid rgba(255,255,255,.04); }
.sb-group-hd {
  width: 100%; background: none; border: none;
  display: -webkit-box; display: -ms-flexbox; display: flex;
  -webkit-box-align: center; -ms-flex-align: center; align-items: center;
  -webkit-box-pack: justify; -ms-flex-pack: justify; justify-content: space-between;
  padding: 10px 14px 10px 12px; cursor: pointer;
  color: #cbd5e1; font-size: 10.5px; font-weight: 700;
  letter-spacing: .7px; text-transform: uppercase;
  font-family: inherit; transition: color .15s; text-align: left;
}
.sb-group-hd:hover { color: #ffffff; }
.sb-group-hd-label { display: -webkit-box; display: -ms-flexbox; display: flex; -webkit-box-align: center; -ms-flex-align: center; align-items: center; gap: 7px; }
.sb-group-arrow { font-size: 13px; -webkit-transition: -webkit-transform .25s; transition: transform .25s; color: #334155; line-height: 1; }
.sb-group.open .sb-group-arrow { -webkit-transform: rotate(90deg); transform: rotate(90deg); color: #64748b; }
.sb-group-body { max-height: 0; overflow: hidden; -webkit-transition: max-height .32s ease; transition: max-height .32s ease; padding: 0 6px; }
.sb-group.open .sb-group-body { max-height: 600px; }
.sb-group-standalone { padding: 4px 8px 2px; }

/* Nav item */
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  cursor: pointer; text-decoration: none;
  color: var(--sb-text);
  border: 1px solid transparent;
  position: relative;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  margin-bottom: 1px;
  -webkit-tap-highlight-color: transparent;
  /* Eliminates 300ms tap delay on Android Chrome without disabling pinch-zoom */
  touch-action: manipulation;
}
.nav-item:hover { background: var(--sb-surface); color: var(--sb-text-hover); }
.nav-item.active {
  background: var(--sb-active-bg);
  color: var(--sb-active-color);
  border-color: rgba(99,102,241,.18);
}
.nav-item.active::before {
  content: '';
  position: absolute; left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: var(--sb-active-line);
  border-radius: 0 3px 3px 0;
}
.nav-icon {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-sm);
  font-size: 15px; flex-shrink: 0;
}
.nav-item.active .nav-icon { background: rgba(99,102,241,.2); }
.nav-text { font-size: 13px; font-weight: 500; }

/* Sidebar footer */
.sb-footer {
  margin-top: auto;
  padding: 12px 8px;
  border-top: 1px solid var(--sb-border);
}
.sb-user {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  margin-bottom: 8px;
}
.sb-avatar {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.sb-uname { color: #e2e8f0; font-size: 13px; font-weight: 600; }
.sb-urole { color: #94a3b8; font-size: 11px; }
.btn-logout {
  width: 100%;
  padding: 7px 12px;
  background: rgba(225,29,72,.09);
  color: #fb7185;
  border: 1px solid rgba(225,29,72,.18);
  border-radius: var(--r-sm);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all var(--dur) var(--ease);
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.btn-logout:hover { background: rgba(225,29,72,.18); color: #f43f5e; }

/* ══ Sidebar Backdrop (mobile) ═══════════════════════ */
.sb-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 9;
  /* opacity/visibility transition instead of display toggle —
     stays in the compositor layer so no repaint on mobile */
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, visibility .25s ease;
  /* NO backdrop-filter: blur() — it forces a full GPU composite
     pass every frame and is the primary freeze cause on Android */
}
.sb-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

/* ══ Main Content ════════════════════════════════════ */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

/* Topbar */
.topbar {
  height: var(--tb-h);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0;
  box-shadow: var(--sh-xs);
}
.topbar-toggle {
  display: none;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  background: none; border: none;
  font-size: 20px; cursor: pointer;
  color: var(--t2); border-radius: var(--r-sm);
  flex-shrink: 0;
  transition: background var(--dur);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.topbar-toggle:hover { background: var(--bg); }
.topbar-title { font-size: 17px; font-weight: 800; color: var(--t1); letter-spacing: -.5px; flex: 1; }
.topbar-date {
  font-size: 12px; color: var(--t2);
  background: var(--bg-subtle);
  padding: 4px 12px;
  border-radius: var(--r-full);
  border: 1px solid var(--border);
  white-space: nowrap;
}

/* Hostel switcher */
.hostel-switcher {
  padding: 7px 28px 7px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 13px; font-weight: 600;
  color: var(--t1); background: var(--card);
  cursor: pointer; outline: none; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  transition: border-color var(--dur);
  max-width: 160px;
}
.hostel-switcher:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-glow); }

/* Role badge */
.role-badge {
  padding: 3px 10px;
  border-radius: var(--r-full);
  font-size: 10.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px;
  flex-shrink: 0;
}
.role-admin   { background: var(--indigo-l); color: var(--indigo); }
.role-staff   { background: var(--amber-l);  color: var(--amber); }
.role-manager { background: #d1fae5;         color: #065f46; }

/* Content Scroll Area */
.content-area { flex: 1; overflow-y: auto; padding: 24px 26px; }

/* ══ Sections ════════════════════════════════════════ */
.section { display: none; animation: fadeUp .2s var(--ease); }
.section.active { display: block; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ══ Stat Cards ══════════════════════════════════════ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px; margin-bottom: 22px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--r-lg);
  padding: 18px 18px 16px;
  box-shadow: var(--sh-card);
  border: 1px solid var(--border);
  position: relative; overflow: hidden;
  transition: box-shadow var(--dur), transform var(--dur);
}
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--c, var(--indigo));
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.stat-card:hover { box-shadow: var(--sh-md); transform: translateY(-2px); }
.stat-row { display: flex; align-items: flex-start; gap: 12px; }
.stat-icon-wrap {
  width: 46px; height: 46px; border-radius: var(--r);
  display: flex; align-items: center; justify-content: center;
  font-size: 21px; flex-shrink: 0;
  background: var(--ic, var(--indigo-l));
}
.stat-value { font-size: 28px; font-weight: 800; color: var(--t1); letter-spacing: -1.5px; line-height: 1; margin-top: 2px; }
.stat-label { font-size: 11.5px; color: var(--t3); margin-top: 4px; font-weight: 500; }
.stat-sub   { font-size: 11px; color: var(--t3); margin-top: 2px; }

/* ══ Cards ═══════════════════════════════════════════ */
.card {
  background: var(--card);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: var(--sh-card);
  margin-bottom: 18px; overflow: hidden;
}
.card:last-child { margin-bottom: 0; }
.card-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.card-title    { font-size: 14px; font-weight: 700; color: var(--t1); }
.card-subtitle { font-size: 11.5px; color: var(--t3); margin-top: 1px; }
.card-body     { padding: 18px; }

/* ══ Toolbar ═════════════════════════════════════════ */
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar-left  { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; flex-wrap: wrap; }
.toolbar-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

/* ══ Buttons ═════════════════════════════════════════ */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--r-sm);
  font-size: 13px; font-weight: 600;
  cursor: pointer; border: none;
  transition: all var(--dur) var(--ease);
  white-space: nowrap; text-decoration: none; line-height: 1;
  -webkit-tap-highlight-color: transparent;
}
.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff; box-shadow: 0 2px 10px rgba(99,102,241,.3);
}
.btn-primary:hover { box-shadow: 0 4px 18px rgba(99,102,241,.42); transform: translateY(-1px); }

.btn-emerald {
  background: linear-gradient(135deg, #059669, #047857);
  color: #fff; box-shadow: 0 2px 8px rgba(5,150,105,.3);
}
.btn-emerald:hover { box-shadow: 0 4px 16px rgba(5,150,105,.4); transform: translateY(-1px); }

.btn-danger {
  background: linear-gradient(135deg, #e11d48, #be123c);
  color: #fff; box-shadow: 0 2px 8px rgba(225,29,72,.25);
}
.btn-danger:hover { box-shadow: 0 4px 16px rgba(225,29,72,.35); transform: translateY(-1px); }

.btn-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff; box-shadow: 0 2px 8px rgba(245,158,11,.25);
}
.btn-warning:hover { box-shadow: 0 4px 16px rgba(245,158,11,.4); transform: translateY(-1px); }

.badge-red { background: #fee2e2; color: #991b1b; }

.btn-amber {
  background: linear-gradient(135deg, #d97706, #b45309);
  color: #fff; box-shadow: 0 2px 8px rgba(217,119,6,.3);
}
.btn-outline {
  background: transparent; color: var(--t2);
  border: 1.5px solid var(--border-d);
}
.btn-outline:hover { background: var(--bg); border-color: var(--indigo); color: var(--indigo); }
.btn-ghost { background: transparent; color: var(--t2); }
.btn-ghost:hover { background: var(--bg); color: var(--t1); }

.btn-sm   { padding: 6px 12px; font-size: 12px; }
.btn-xs   { padding: 4px 9px;  font-size: 11.5px; }
.btn-icon { width: 34px; height: 34px; padding: 0; justify-content: center; }
.btn-icon.btn-sm { width: 28px; height: 28px; }

/* View toggle */
.view-toggle { display: flex; border: 1.5px solid var(--border-d); border-radius: var(--r-sm); overflow: hidden; }
.vt-btn { padding: 6px 10px; font-size: 15px; background: none; border: none; cursor: pointer; color: var(--t3); transition: all var(--dur); }
.vt-btn.active { background: var(--indigo); color: #fff; }

/* ══ Search & Filters ════════════════════════════════ */
.search-wrap { position: relative; }
.search-wrap .search-ico {
  position: absolute; left: 10px; top: 50%;
  transform: translateY(-50%);
  color: var(--t3); font-size: 13px; pointer-events: none;
}
.search-input {
  padding: 8px 12px 8px 32px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 13px; outline: none;
  min-width: 200px; background: var(--card); color: var(--t1);
  transition: border-color var(--dur), box-shadow var(--dur);
}
.search-input:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-glow); }
.search-input::placeholder { color: var(--t3); }

select.filter-select {
  padding: 8px 28px 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 13px; outline: none; cursor: pointer;
  background: var(--card); color: var(--t1); appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  transition: border-color var(--dur);
}
select.filter-select:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-glow); }

/* ══ Table ═══════════════════════════════════════════ */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 10px; font-weight: 700;
  letter-spacing: .7px; text-transform: uppercase;
  color: var(--t3); background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody tr { transition: background var(--dur); }
tbody tr:nth-child(even) { background: #fafbff; }
tbody tr:hover { background: #f0f4ff; }
tbody td { padding: 11px 14px; border-bottom: 1px solid var(--border); color: var(--t1); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
.empty-state { text-align: center; padding: 52px 20px; color: var(--t3); }
.empty-state .empty-ico { font-size: 38px; display: block; margin-bottom: 10px; opacity: .5; }

/* ══ Badges ══════════════════════════════════════════ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 9px;
  border-radius: var(--r-full);
  font-size: 11px; font-weight: 600;
  white-space: nowrap;
}
.badge::before { content: '●'; font-size: 6px; }
.badge-emerald { background: var(--emerald-l); color: var(--emerald); }
.badge-crimson { background: var(--crimson-l); color: var(--crimson); }
.badge-amber   { background: var(--amber-l);   color: var(--amber); }
.badge-indigo  { background: var(--indigo-l);  color: var(--indigo); }
.badge-sky     { background: var(--sky-l);     color: var(--sky); }
.badge-violet  { background: var(--violet-l);  color: var(--violet); }
.badge-teal    { background: var(--teal-l);    color: var(--teal); }
.badge-gray    { background: #f1f5f9; color: #64748b; }
.badge-gray::before { opacity: .5; }

/* ══ Forms ═══════════════════════════════════════════ */
.form-grid  { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-cols3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.form-full  { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-label { font-size: 12px; font-weight: 600; color: var(--t2); letter-spacing: .2px; }
.form-label .req { color: var(--crimson); margin-left: 2px; }
.form-control {
  padding: 8px 11px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 13px; color: var(--t1); background: var(--card);
  outline: none; width: 100%;
  transition: border-color var(--dur), box-shadow var(--dur);
  font-family: inherit;
}
.form-control:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-glow); }
.form-control::placeholder { color: var(--t3); }
textarea.form-control { resize: vertical; min-height: 72px; }
select.form-control {
  appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; padding-right: 30px;
}

/* ══ Modals ══════════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10,15,30,.6);
  /* backdrop-filter: blur(5px); — removed: GPU freeze on Android Chrome */
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; opacity: 0; pointer-events: none;
  transition: opacity .22s var(--ease);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--card);
  border-radius: var(--r-xl);
  width: 92%; max-width: 560px; max-height: 92vh;
  display: flex; flex-direction: column;
  box-shadow: var(--sh-lg);
  transform: translateY(18px) scale(.97);
  transition: transform .25s var(--ease);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal.wide   { max-width: 700px; }
.modal.narrow { max-width: 440px; }
.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title  { font-size: 15px; font-weight: 700; }
.modal-close  {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: none; border: none; font-size: 22px; cursor: pointer;
  color: var(--t3); border-radius: var(--r-sm); line-height: 1;
  transition: all var(--dur);
}
.modal-close:hover { color: var(--t1); background: var(--bg-subtle); }
.modal-body   { padding: 20px 22px; overflow-y: auto; }
.modal-footer {
  padding: 12px 22px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
  background: var(--bg-subtle);
  border-radius: 0 0 var(--r-xl) var(--r-xl);
}

/* ══ Staff Cards ════════════════════════════════════ */
.staff-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.staff-card {
  background: var(--card);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: var(--sh-card);
  overflow: hidden;
  transition: box-shadow var(--dur), transform var(--dur);
}
.staff-card:hover { box-shadow: var(--sh-md); transform: translateY(-3px); }

.sc-header {
  height: 72px;
  background: var(--grad, linear-gradient(135deg, #6366f1, #4f46e5));
  position: relative;
  display: flex; align-items: flex-start; justify-content: flex-end;
  padding: 8px 10px;
}
.sc-actions { display: flex; gap: 5px; }
.sc-btn {
  width: 26px; height: 26px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-sm); color: rgba(255,255,255,.85);
  cursor: pointer; font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur);
}
.sc-btn:hover { background: rgba(255,255,255,.28); }
.sc-btn.del:hover { background: rgba(220,38,38,.5); border-color: rgba(220,38,38,.6); }
.sc-avatar {
  position: absolute; bottom: -20px; left: 16px;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--avc, #6366f1);
  border: 3px solid #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 800; color: #fff;
  box-shadow: 0 4px 14px rgba(0,0,0,.2);
}
.sc-body    { padding: 26px 16px 14px; }
.sc-name    { font-size: 14px; font-weight: 700; color: var(--t1); }
.sc-role    { font-size: 11px; color: var(--t3); text-transform: uppercase; letter-spacing: .5px; margin-top: 1px; }
.sc-details { display: flex; flex-direction: column; gap: 5px; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border); }
.sc-row     { display: flex; align-items: center; justify-content: space-between; font-size: 12px; }
.sc-row-lbl { color: var(--t3); }
.sc-row-val { font-weight: 600; color: var(--t2); }
.sc-badges  { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 8px; }

/* Staff mini stats */
.staff-quickstats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 18px; }
.sqstat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 12px 16px;
  display: flex; align-items: center; gap: 10px;
  box-shadow: var(--sh-xs); transition: box-shadow var(--dur);
}
.sqstat:hover { box-shadow: var(--sh); }
.sqstat-icon { width: 38px; height: 38px; border-radius: var(--r); display: flex; align-items: center; justify-content: center; font-size: 17px; flex-shrink: 0; }
.sqstat-val { font-size: 22px; font-weight: 800; color: var(--t1); letter-spacing: -1px; line-height: 1; }
.sqstat-lbl { font-size: 11px; color: var(--t3); margin-top: 2px; }

/* ══ Room Grid ═══════════════════════════════════════ */
.rooms-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(188px, 1fr)); gap: 12px; }
.room-card {
  background: var(--card);
  border-radius: var(--r-lg);
  border-left: 4px solid var(--rc, var(--t3));
  border-top: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 16px 14px; cursor: pointer;
  transition: box-shadow var(--dur), transform var(--dur);
  position: relative; overflow: hidden;
}
.room-card.available   { --rc: var(--emerald); }
.room-card.occupied    { --rc: var(--crimson); }
.room-card.maintenance { --rc: var(--amber); }
.room-card:hover { box-shadow: var(--sh-md); transform: translateY(-2px); }
.room-num  { font-size: 20px; font-weight: 800; color: var(--t1); }
.room-meta { font-size: 10.5px; color: var(--t3); text-transform: uppercase; letter-spacing: .4px; margin-top: 1px; }
.room-occ  { font-size: 12px; color: var(--t2); margin-top: 8px; }
.room-rent { font-size: 12.5px; font-weight: 700; color: var(--indigo); margin-top: 3px; }
.room-sbadge { margin-top: 8px; }
.room-acts { position: absolute; top: 8px; right: 8px; display: none; gap: 4px; }
.room-card:hover .room-acts { display: flex; }

/* ══ Attendance Grid ════════════════════════════════ */
.att-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(196px, 1fr)); gap: 9px; }
.att-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--r); padding: 9px 12px;
  display: flex; align-items: center; justify-content: space-between;
  transition: border-color var(--dur), background var(--dur);
}
.att-card.is-present { border-color: var(--emerald); background: #f0fdf4; }
.att-card.is-absent  { border-color: var(--crimson); background: #fff1f2; }
.att-name { font-size: 12.5px; font-weight: 500; }
.att-sub  { font-size: 11px; color: var(--t3); }
.att-toggle { display: flex; gap: 4px; }
.att-btn {
  padding: 4px 10px;
  border: 1.5px solid var(--border-d);
  border-radius: var(--r-full);
  font-size: 11px; font-weight: 700;
  cursor: pointer; background: none; color: var(--t3);
  transition: all var(--dur);
}
.att-btn.present.active { background: var(--emerald-l); border-color: var(--emerald); color: var(--emerald); }
.att-btn.absent.active  { background: var(--crimson-l); border-color: var(--crimson); color: var(--crimson); }

/* ══ Week Menu ═══════════════════════════════════════ */
.week-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.day-col   { border-radius: var(--r); border: 1px solid var(--border); overflow: hidden; }
.day-hdr   { text-align: center; padding: 6px 4px; font-size: 10px; font-weight: 700; color: var(--t3); text-transform: uppercase; letter-spacing: .4px; background: var(--bg-subtle); border-bottom: 1px solid var(--border); }
.day-hdr.today { background: var(--indigo-l); color: var(--indigo); }
.meal-slot { padding: 7px 8px; min-height: 50px; border-bottom: 1px solid var(--border); cursor: pointer; transition: background var(--dur); position: relative; }
.meal-slot:last-child { border-bottom: none; }
.meal-slot:hover { background: var(--bg); }
.ms-type  { font-size: 8.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .4px; color: var(--t3); }
.ms-items { font-size: 10.5px; color: var(--t1); margin-top: 2px; line-height: 1.4; }
.ms-empty { font-size: 9.5px; color: var(--t4); font-style: italic; margin-top: 2px; }
.ms-add   { font-size: 13px; color: var(--t4); position: absolute; right: 5px; top: 5px; display: none; }
.meal-slot:hover .ms-add { display: block; color: var(--indigo); }

/* ══ Summary Bar ═════════════════════════════════════ */
.summary-bar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.summary-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 14px 18px; text-align: center; box-shadow: var(--sh-xs); }
.summary-box .sv { font-size: 22px; font-weight: 800; color: var(--t1); letter-spacing: -1px; }
.summary-box .sl { font-size: 10.5px; color: var(--t3); margin-top: 3px; text-transform: uppercase; letter-spacing: .5px; }

/* ══ Ledger ══════════════════════════════════════════ */
.ledger-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px; margin-bottom: 20px;
}
.ledger-card {
  background: var(--card);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  padding: 16px 18px;
  box-shadow: var(--sh-card);
  position: relative; overflow: hidden;
}
.ledger-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--lc, var(--indigo));
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.lc-val  { font-size: 22px; font-weight: 800; color: var(--t1); letter-spacing: -1px; line-height: 1; }
.lc-lbl  { font-size: 11px; color: var(--t3); margin-top: 5px; font-weight: 500; }
.lc-icon { font-size: 22px; margin-bottom: 8px; }
.arrears-badge {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--crimson-l); color: var(--crimson);
  padding: 2px 8px; border-radius: var(--r-full);
  font-size: 11px; font-weight: 700;
}
.ledger-prev { font-size: 12px; color: var(--crimson); font-weight: 700; }

/* ══ Tab Bar ═════════════════════════════════════════ */
.tab-bar { display: flex; gap: 2px; border-bottom: 2px solid var(--border); margin-bottom: 18px; }
.tab-btn {
  padding: 9px 18px;
  font-size: 13px; font-weight: 600; color: var(--t3);
  background: none; border: none; cursor: pointer;
  position: relative; border-radius: var(--r-sm) var(--r-sm) 0 0;
  transition: color var(--dur), background var(--dur);
}
.tab-btn::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: transparent; transition: background var(--dur);
}
.tab-btn.active { color: var(--indigo); }
.tab-btn.active::after { background: var(--indigo); }
.tab-btn:hover:not(.active) { color: var(--t2); background: var(--bg); }

/* ══ Payment List ════════════════════════════════════ */
.payment-list { display: flex; flex-direction: column; gap: 5px; }
.payment-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 12px;
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-radius: var(--r); font-size: 12.5px;
}
.payment-item .pm { font-weight: 700; }
.payment-item .pa { font-size: 11px; color: var(--t3); margin-top: 1px; }

/* ══ Dashboard 2-col ════════════════════════════════ */
.two-col   { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.three-col { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }

/* ══ Network Info Card ═══════════════════════════════ */
.net-url-display {
  font-size: 20px; font-weight: 800;
  color: var(--indigo); letter-spacing: -.5px;
  background: var(--indigo-l);
  padding: 14px 20px; border-radius: var(--r);
  border: 1.5px solid rgba(99,102,241,.2);
  word-break: break-all; text-align: center;
  margin-bottom: 12px;
}
.net-step { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 10px; }
.net-step-num {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--indigo); color: #fff;
  font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 1px;
}
.net-step-text { font-size: 13px; color: var(--t2); line-height: 1.5; }
.net-step-text strong { color: var(--t1); }

/* ══ Hostel Branch Cards ═════════════════════════════ */
.hostel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.hostel-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 18px;
  box-shadow: var(--sh-card);
  transition: box-shadow var(--dur), transform var(--dur);
}
.hostel-card:hover { box-shadow: var(--sh-md); transform: translateY(-2px); }
.hostel-card-name { font-size: 16px; font-weight: 800; color: var(--t1); }
.hostel-card-addr { font-size: 12px; color: var(--t3); margin-top: 3px; }
.hostel-stats { display: flex; gap: 14px; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.hostel-stat-val { font-size: 18px; font-weight: 800; color: var(--t1); line-height: 1; }
.hostel-stat-lbl { font-size: 10px; color: var(--t3); margin-top: 2px; }

/* ══ Confirm Dialog ══════════════════════════════════ */
#confirm-overlay {
  position: fixed; inset: 0;
  background: rgba(10,15,30,.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 2000; opacity: 0; pointer-events: none;
  transition: opacity .2s var(--ease);
}
#confirm-overlay.open { opacity: 1; pointer-events: all; }
.confirm-box {
  background: var(--card); border-radius: var(--r-xl);
  padding: 30px; max-width: 370px; width: 90%;
  box-shadow: var(--sh-lg); text-align: center;
}
.confirm-ico { font-size: 42px; margin-bottom: 12px; display: block; }
.confirm-box h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.confirm-box p  { font-size: 13px; color: var(--t2); margin-bottom: 22px; line-height: 1.6; }
.confirm-btns   { display: flex; gap: 10px; justify-content: center; }

/* ══ Toast ═══════════════════════════════════════════ */
#toast-container { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 7px; z-index: 9999; }
.toast {
  padding: 11px 16px; border-radius: var(--r);
  font-size: 13px; font-weight: 500; color: #fff;
  box-shadow: var(--sh-md);
  min-width: 220px; max-width: 320px;
  display: flex; align-items: center; gap: 8px;
  animation: toastIn .28s var(--ease);
}
.toast-success { background: linear-gradient(135deg, #059669, #047857); }
.toast-error   { background: linear-gradient(135deg, #e11d48, #be123c); }
.toast-info    { background: linear-gradient(135deg, #6366f1, #4f46e5); }
@keyframes toastIn { from { opacity:0; transform:translateX(20px); } to { opacity:1; transform:translateX(0); } }

/* ══ Spinner ═════════════════════════════════════════ */
.spinner { width: 20px; height: 20px; border: 2.5px solid var(--border); border-top-color: var(--indigo); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-row td { text-align: center; padding: 36px; }

/* ══ Utilities ═══════════════════════════════════════ */
.flex  { display: flex; }
.ic    { align-items: center; }
.g1 { gap: 4px; }   .g2 { gap: 8px; }   .g3 { gap: 12px; }
.mt1 { margin-top: 4px; }   .mt2 { margin-top: 8px; }   .mt3 { margin-top: 16px; }
.mb2 { margin-bottom: 8px; }  .mb3 { margin-bottom: 16px; }
.fw7 { font-weight: 700; }  .fw6 { font-weight: 600; }
.fw8 { font-weight: 800; }
.sm  { font-size: 12px; }   .xs  { font-size: 11px; }
.muted  { color: var(--t3); }
.right  { text-align: right; }
.center { text-align: center; }
.w-full { width: 100%; }
.divider { border: none; border-top: 1px solid var(--border); margin: 14px 0; }
code { font-family: 'Courier New', monospace; font-size: .92em; background: var(--bg-subtle); padding: 1px 5px; border-radius: 3px; }

/* ══ Role-Based Hiding ═══════════════════════════════ */
body.staff-mode   .admin-only     { display: none !important; }
body.manager-mode .admin-only     { display: none !important; }
/* manager-visible: shown to admin & manager, hidden to staff */
body.staff-mode   .manager-visible { display: none !important; }

/* ══ Scrollbar ═══════════════════════════════════════ */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-d); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--t3); }

/* ════════════════════════════════════════════════════
   RESPONSIVE — TABLET  (≤1024px)
   ════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .stats-grid     { grid-template-columns: repeat(2, 1fr); }
  .ledger-summary { grid-template-columns: repeat(2, 1fr); }
  .two-col        { grid-template-columns: 1fr; }
  .three-col      { grid-template-columns: 1fr 1fr; }
  .week-grid      { grid-template-columns: repeat(4, 1fr); overflow-x: auto; }
}

/* ════════════════════════════════════════════════════
   RESPONSIVE — MOBILE  (≤768px)
   ════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  #inv-grid { grid-template-columns: 1fr !important; }

  /* Sidebar — absolute-overlay layout. sb-nav is absolutely positioned to
     fill the ENTIRE sidebar (top:0 to bottom:0) and scrolls independently;
     sb-brand/sb-footer float on top with solid backgrounds, masking the
     nav content that scrolls underneath them. No flex/grid row-sizing
     ambiguity — position:absolute against position:fixed is supported
     identically on every mobile browser (iOS Safari, Android Chrome/WebView). */
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    width: 80vw;
    max-width: 280px;
    min-width: 0;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    display: block;
    transform: translateX(-110%);
    z-index: 1000;
    box-shadow: none;
    transition: transform .25s ease, box-shadow .25s ease;
    will-change: transform;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
  }
  /* sb-nav fills the whole sidebar and scrolls; sits BELOW brand/footer */
  .sidebar .sb-nav {
    position: absolute;
    top: 0; bottom: 0; left: 0; right: 0;
    z-index: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    touch-action: pan-y;
    padding-top: 80px;     /* clears the brand header (~77px) so first item isn't hidden */
    padding-bottom: 124px; /* clears the footer (~113px) so last item isn't hidden */
  }
  /* sb-brand floats on top, pinned to the top */
  .sidebar .sb-brand {
    position: relative;
    z-index: 2;
    background: var(--sb-bg);
  }
  /* sb-footer floats on top, pinned to the bottom */
  .sidebar .sb-footer {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 2;
    background: var(--sb-bg);
    margin-top: 0;
  }
  .app-wrap { overflow: hidden; }
  .main-content { width: 100%; min-width: 0; }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 8px 0 40px rgba(0,0,0,.6);
  }
  body.sb-open { overflow: hidden; }
  body.sb-open .main-content { pointer-events: none; }

  /* Show hamburger */
  .topbar-toggle { display: flex; }

  /* Topbar adjustments */
  .topbar { padding: 0 14px; gap: 8px; }
  .topbar-title { font-size: 15px; }
  .topbar-date  { display: none; }
  .hostel-switcher { max-width: 130px; font-size: 12px; }

  /* Content */
  .content-area { padding: 16px 14px; }

  /* Grids */
  .stats-grid     { grid-template-columns: 1fr 1fr; gap: 10px; }
  .ledger-summary { grid-template-columns: 1fr 1fr; gap: 10px; }
  .two-col        { grid-template-columns: 1fr; gap: 12px; }
  .three-col      { grid-template-columns: 1fr; gap: 12px; }
  .staff-quickstats { grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
  .rooms-grid     { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .hostel-grid    { grid-template-columns: 1fr; }

  /* Forms */
  .form-grid, .form-cols3 { grid-template-columns: 1fr; }

  /* Toolbar stacking */
  .toolbar        { flex-direction: column; align-items: stretch; gap: 8px; }
  .toolbar-left,
  .toolbar-right  { width: 100%; }
  .toolbar-right  { justify-content: flex-start; }
  .search-input   { min-width: unset; width: 100%; }

  /* Weekly menu scrollable */
  .week-grid { grid-template-columns: repeat(7, minmax(88px, 1fr)); overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Modal */
  .modal { width: 96%; max-height: 94vh; border-radius: var(--r-lg); }

  /* Summary bar */
  .summary-bar { grid-template-columns: 1fr; gap: 8px; }

  /* Buttons — larger touch targets */
  .btn { padding: 10px 16px; font-size: 13.5px; }
  .btn-sm { padding: 8px 12px; font-size: 12.5px; }

  /* Stat cards */
  .stat-value { font-size: 24px; }
  .stat-icon-wrap { width: 40px; height: 40px; font-size: 18px; }

  /* Toasts at bottom center */
  #toast-container { left: 14px; right: 14px; bottom: 16px; }
  .toast { min-width: unset; max-width: unset; }
}

/* ── Defaulter row highlight ─────────────────────────
   Applied inline via style attr; this adds a subtle
   left border accent for defaulter rows in tables.   */
tr.defaulter-row td:first-child {
  border-left: 3px solid #dc2626;
}
tr.defaulter-row:hover {
  background: rgba(220,38,38,.1) !important;
}

/* ════════════════════════════════════════════════════
   MULTI-ITEM BILL FORM
   ════════════════════════════════════════════════════ */
/* Desktop: horizontal grid — remove | item | qty+rate pair | [total hidden] */
.multi-item-row {
  display: grid;
  grid-template-columns: auto 2fr 2fr;
  gap: 6px;
  margin-bottom: 6px;
  align-items: end;
}
.multi-item-row .mir-total-wrap { display: none; } /* hidden on desktop */
.mir-label { font-size: 11px; font-weight: 700; color: var(--t2); margin-bottom: 4px; display: block; text-transform: uppercase; letter-spacing: .4px; }
.mir-input { min-height: 40px; }
.mir-remove { width: 30px; height: 30px; border-radius: 50%; background: #fee2e2; color: #b91c1c; border: none; font-size: 16px; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; align-self: end; }
.mir-full { grid-column: 2; }
.mir-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; grid-column: 3; }
.multi-grand-bar { display: flex; justify-content: space-between; align-items: center; border-top: 2px solid var(--emerald); padding: 12px 0 4px; margin-top: 6px; }
.bulk-grid3 { display: grid; gap: 8px; }

/* ════════════════════════════════════════════════════
   RESPONSIVE — SMALL MOBILE  (≤480px)
   ════════════════════════════════════════════════════ */
@media (max-width: 480px) {
  .stats-grid     { grid-template-columns: 1fr 1fr; gap: 8px; }
  .ledger-summary { grid-template-columns: 1fr 1fr; gap: 8px; }
  .staff-quickstats { grid-template-columns: 1fr 1fr; gap: 8px; }
  .staff-grid     { grid-template-columns: 1fr; }
  .att-grid       { grid-template-columns: 1fr; }
  .rooms-grid     { grid-template-columns: 1fr 1fr; }
  .tab-bar        { overflow-x: auto; -webkit-overflow-scrolling: touch; flex-wrap: nowrap; }
  .tab-btn        { white-space: nowrap; }
  .content-area   { padding: 12px 10px; }
  .topbar         { padding: 0 10px; }
  .hostel-switcher { max-width: 110px; font-size: 11.5px; }
  .ledger-card    { padding: 12px 14px; }
  .lc-val         { font-size: 18px; }
  .card-body      { padding: 14px; }
  .card-header    { padding: 12px 14px; }
  /* Prevent stat card values overflowing on small screens */
  .stat-card      { padding: 12px 10px 10px; }
  .stat-value     { font-size: 17px; letter-spacing: -0.5px; word-break: break-all; }
  .stat-label     { font-size: 10px; }
  .stat-icon-wrap { width: 36px; height: 36px; font-size: 17px; }
  .stat-row       { gap: 8px; }
  /* Multi-item bill: card layout on mobile */
  .multi-item-row {
    display: block;
    position: relative;
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    padding: 44px 12px 12px;
    margin-bottom: 10px;
  }
  .multi-item-row .mir-remove { position: absolute; top: 8px; right: 8px; width: 28px; height: 28px; }
  .multi-item-row .mir-full   { grid-column: unset; width: 100%; margin-bottom: 8px; }
  .multi-item-row .mir-pair   { grid-column: unset; grid-template-columns: 1fr 1fr; margin-bottom: 8px; }
  .multi-item-row .mir-total-wrap { display: block !important; }
  .multi-item-row .mir-total  { background: #f0fdf4; font-weight: 700; color: var(--emerald); }
  .mir-input { min-height: 44px; font-size: 16px; }
  /* Grand total sticky above Save on mobile */
  .multi-grand-bar { position: sticky; bottom: 0; background: var(--card); z-index: 5; padding: 10px 0; border-top: 2px solid var(--emerald); margin-top: 8px; }
  /* Bulk form: stack on mobile */
  .bulk-grid3 { grid-template-columns: 1fr 1fr; }
  .bulk-grid3 > div:first-child { grid-column: 1 / -1; }
}

/* ═══════════════════ DARK MODE ═══════════════════ */
html.dark { --bg: #0f172a; --card: #1e293b; --bg-subtle: #162032; --t1: #f1f5f9; --t2: #94a3b8; --t3: #64748b; --border: #334155; --border-d: #475569; --sb-bg: #020617; }
html.dark .topbar { background: #1e293b; border-color: #334155; }
html.dark .card { background: #1e293b; }
html.dark .form-control { background: #0f172a; color: #f1f5f9; border-color: #334155; }
html.dark table thead th { background: #162032; color: #94a3b8; }
html.dark tr:hover { background: rgba(255,255,255,.04) !important; }
html.dark .modal > div, html.dark .modal { background: #1e293b; }
html.dark .ledger-summary .ledger-card { background: #162032; }
#dark-toggle { background: none; border: none; cursor: pointer; font-size: 18px; padding: 0 6px; line-height: 1; }

/* ═══════════════════ STUDENT PORTAL (mobile PWA) ═══════════════════
   Reuses the shared design tokens (--bg, --card, --border, --t1/2/3,
   --indigo/emerald/crimson/amber, .badge, .card) instead of a parallel
   palette — the page always runs in dark mode (class="dark" on <html>). */
.student-portal { -webkit-tap-highlight-color: transparent; }
.student-portal a { color: var(--indigo); text-decoration: none; }
.student-portal button { cursor: pointer; border: none; outline: none; font: inherit; }

/* Login screen */
.sp-login-screen { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.sp-login-card { width: 100%; max-width: 380px; background: var(--card); border-radius: var(--r-lg); padding: 32px 24px; border: 1px solid var(--border); }
.sp-login-logo { text-align: center; margin-bottom: 24px; }
.sp-login-logo .sp-logo-icon { font-size: 40px; display: block; margin-bottom: 8px; }
.sp-login-logo h1 { font-size: 22px; font-weight: 700; color: var(--t1); }
.sp-login-logo p { font-size: 13px; color: var(--t2); margin-top: 2px; }
.sp-form-group { margin-bottom: 14px; }
.sp-form-group label { display: block; font-size: 12px; color: var(--t2); margin-bottom: 6px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.sp-form-group input, .sp-form-group textarea { width: 100%; padding: 13px 14px; background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--r); color: var(--t1); font-size: 15px; font-family: inherit; transition: border-color .2s; }
.sp-form-group input:focus, .sp-form-group textarea:focus { border-color: var(--indigo); outline: none; }
.sp-btn-login { width: 100%; padding: 14px; background: var(--indigo); color: #fff; border-radius: var(--r); font-size: 15px; font-weight: 700; margin-top: 4px; transition: opacity .15s; }
.sp-btn-login:active { opacity: .85; }
.sp-login-err { color: var(--crimson); font-size: 13px; text-align: center; margin-top: 10px; min-height: 20px; }

/* App shell */
.sp-app-shell { display: none; flex-direction: column; min-height: 100vh; }
.sp-top-bar { position: sticky; top: 0; z-index: 100; background: var(--card); border-bottom: 1px solid var(--border); padding: 12px 16px; display: flex; align-items: center; gap: 12px; }
.sp-top-bar .sp-tb-title { font-weight: 700; font-size: 16px; flex: 1; color: var(--t1); }
.sp-notif-btn { position: relative; background: transparent; padding: 4px 8px; font-size: 20px; color: var(--t2); }
.sp-notif-badge { position: absolute; top: 0; right: 0; background: var(--crimson); color: #fff; font-size: 9px; font-weight: 700; border-radius: 10px; padding: 1px 5px; min-width: 16px; text-align: center; display: none; }

/* Bottom nav */
.sp-bottom-nav { position: fixed; bottom: 0; left: 0; right: 0; z-index: 100; background: var(--card); border-top: 1px solid var(--border); display: flex; padding: 8px 0 calc(8px + env(safe-area-inset-bottom)); }
.sp-bn-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 6px 4px; background: transparent; color: var(--t2); font-size: 10px; font-weight: 600; transition: color .15s; }
.sp-bn-item.active { color: var(--indigo); }
.sp-bn-icon { font-size: 20px; line-height: 1; }
@media (min-width: 480px) { .sp-bottom-nav { max-width: 600px; left: 50%; transform: translateX(-50%); border-radius: 16px 16px 0 0; } }

/* Page content */
.sp-page-content { flex: 1; padding: 16px; padding-bottom: 90px; max-width: 600px; width: 100%; margin: 0 auto; }
.student-portal .card { padding: 16px; }

/* Profile hero */
.sp-profile-hero { background: linear-gradient(135deg, var(--indigo-d, #4f46e5), var(--navy-d, #071a33)); border-radius: var(--r-lg); padding: 20px 16px; margin-bottom: 18px; border: 1px solid var(--border); }
.sp-ph-name { font-size: 20px; font-weight: 800; color: #fff; }
.sp-ph-sub { font-size: 13px; color: #93c5fd; margin-top: 2px; }
.sp-ph-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

/* Dues banner */
.sp-dues-banner { border-radius: var(--r-lg); padding: 16px; margin-bottom: 18px; border: 2px solid; display: flex; align-items: center; gap: 14px; }
.sp-dues-banner.clear { background: var(--emerald-l); border-color: var(--emerald); }
.sp-dues-banner.pending { background: var(--amber-l); border-color: var(--amber); }
html.dark .sp-dues-banner.clear { background: rgba(5,150,105,.12); }
html.dark .sp-dues-banner.pending { background: rgba(217,119,6,.12); }
.sp-dues-icon { font-size: 30px; }
.sp-dues-amount { font-size: 24px; font-weight: 800; color: var(--t1); }
.sp-dues-label { font-size: 12px; color: var(--t2); margin-top: 1px; }

/* Ledger table (mobile rows) */
.sp-ledger-row { display: flex; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); gap: 10px; }
.sp-ledger-row:last-child { border: none; }
.sp-ledger-month { font-size: 13px; font-weight: 700; min-width: 72px; color: var(--t1); }
.sp-ledger-detail { flex: 1; min-width: 0; }
.sp-ledger-detail .sp-ld-amount { font-size: 15px; font-weight: 700; color: var(--t1); }
.sp-ledger-detail .sp-ld-date { font-size: 11px; color: var(--t2); }
.sp-ledger-detail .sp-ld-receipt { font-size: 11px; color: var(--t3); margin-top: 1px; }

/* Notifications */
.sp-notif-item { padding: 12px 0; border-bottom: 1px solid var(--border); display: flex; gap: 12px; cursor: pointer; }
.sp-notif-item:last-child { border: none; }
.sp-notif-item.unread .sp-ni-title { font-weight: 700; }
.sp-ni-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--indigo); margin-top: 6px; flex-shrink: 0; }
.sp-ni-dot.read { background: transparent; border: 1.5px solid var(--border); }
.sp-ni-title { font-size: 14px; margin-bottom: 2px; color: var(--t1); }
.sp-ni-body { font-size: 12px; color: var(--t2); }
.sp-ni-time { font-size: 10px; color: var(--t3); margin-top: 3px; }

/* Info rows (profile detail) */
.sp-info-row { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.sp-info-row:last-child { border: none; }
.sp-info-label { font-size: 12px; color: var(--t2); min-width: 110px; flex-shrink: 0; padding-top: 1px; }
.sp-info-val { font-size: 14px; font-weight: 500; flex: 1; color: var(--t1); }

/* PDF / submit buttons */
.sp-btn-pdf { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 12px; border-radius: var(--r); background: var(--bg-subtle); color: var(--t1); font-size: 14px; font-weight: 600; border: 1.5px solid var(--border); margin-top: 8px; transition: background .15s; }
.sp-btn-submit { width: 100%; padding: 14px; border-radius: var(--r); font-size: 15px; font-weight: 700; background: var(--indigo); color: #fff; margin-top: 8px; transition: opacity .15s; }
.sp-btn-submit:active { opacity: .85; }
.sp-btn-submit.sp-btn-danger { background: var(--crimson-l); color: var(--crimson); }
.sp-notice-row { padding: 12px 0; border-bottom: 1px solid var(--border); }
.sp-notice-row:last-child { border: none; }

/* Skeleton loader */
.sp-skel { background: var(--bg-subtle); border-radius: var(--r-sm); animation: sp-pulse 1.4s ease infinite; }
@keyframes sp-pulse { 0%,100% { opacity: .6; } 50% { opacity: 1; } }

/* Section header / empty state */
.sp-section-hd { font-size: 18px; font-weight: 800; margin-bottom: 16px; color: var(--t1); }
.sp-empty-state { text-align: center; padding: 48px 20px; color: var(--t2); font-size: 14px; }
.sp-empty-state .sp-es-icon { font-size: 40px; margin-bottom: 12px; display: block; opacity: .5; }

/* Toast */
.sp-toast { position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%); background: var(--card); color: var(--t1); border: 1px solid var(--border); padding: 10px 20px; border-radius: 100px; font-size: 13px; font-weight: 600; z-index: 9999; display: none; white-space: nowrap; box-shadow: var(--sh-md); }

/* Modal sheet */
.sp-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 500; display: none; align-items: flex-end; justify-content: center; }
.sp-modal-overlay.open { display: flex; }
.sp-modal-sheet { background: var(--card); border-radius: 20px 20px 0 0; padding: 20px 16px; width: 100%; max-width: 600px; max-height: 80vh; overflow-y: auto; border: 1px solid var(--border); }
.sp-modal-title { font-size: 17px; font-weight: 800; margin-bottom: 16px; color: var(--t1); }
.sp-modal-close { float: right; background: var(--border); border: none; border-radius: 50%; width: 30px; height: 30px; font-size: 18px; color: var(--t1); line-height: 30px; text-align: center; cursor: pointer; }