/* ============================================
   School Attendance System — Main Stylesheet
   ============================================ */

:root{
  --primary:#4f46e5;
  --primary-dark:#4338ca;
  --primary-light:#eef2ff;
  --sidebar-bg:#1e1b39;
  --sidebar-bg-hover:#2a265a;
  --text-dark:#1f2333;
  --text-muted:#6b7280;
  --bg:#f4f5fa;
  --card-bg:#ffffff;
  --border:#e5e7eb;
  --success:#16a34a;
  --success-bg:#dcfce7;
  --danger:#dc2626;
  --danger-bg:#fee2e2;
  --warning:#d97706;
  --warning-bg:#fef3c7;
  --info:#0284c7;
  --info-bg:#e0f2fe;
  --radius:12px;
  --shadow:0 1px 3px rgba(16,24,40,.06), 0 1px 2px rgba(16,24,40,.04);
  --shadow-md:0 4px 12px rgba(16,24,40,.08);
}

*{box-sizing:border-box;margin:0;padding:0;}

body{
  font-family:'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--text-dark);
  font-size:14.5px;
  line-height:1.5;
}

a{text-decoration:none;color:inherit;}
ul{list-style:none;}
img{max-width:100%;display:block;}

/* ---------- Layout ---------- */
.app{
  display:flex;
  min-height:100vh;
}

/* ---------- Sidebar ---------- */
.sidebar{
  width:250px;
  flex-shrink:0;
  background:var(--sidebar-bg);
  color:#cfcbe8;
  display:flex;
  flex-direction:column;
  position:fixed;
  top:0; left:0; bottom:0;
  z-index:100;
  transition:transform .25s ease;
}

.sidebar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:22px 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
}

.sidebar-brand .logo-badge{
  width:38px;height:38px;
  background:var(--primary);
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:16px;
  flex-shrink:0;
}

.sidebar-brand .brand-text strong{
  display:block;color:#fff;font-size:15px;line-height:1.2;
}
.sidebar-brand .brand-text span{
  font-size:11.5px;color:#9d97c9;
}

.sidebar-role{
  margin:16px 20px 6px;
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.06em;
  color:#79739f;
  font-weight:600;
}

.sidebar-nav{
  flex:1;
  overflow-y:auto;
  padding:4px 12px 20px;
}

.sidebar-nav li{margin-bottom:2px;}

.sidebar-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:9px;
  font-size:14px;
  color:#cfcbe8;
  transition:background .15s, color .15s;
}

.sidebar-nav a .ic{
  width:20px;height:20px;
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

.sidebar-nav a:hover{
  background:var(--sidebar-bg-hover);
  color:#fff;
}

.sidebar-nav a.active{
  background:var(--primary);
  color:#fff;
}

.sidebar-foot{
  padding:16px 20px;
  border-top:1px solid rgba(255,255,255,.08);
}

.sidebar-foot a{
  display:flex;align-items:center;gap:10px;
  color:#cfcbe8;font-size:13.5px;
}
.sidebar-foot a:hover{color:#fff;}

/* ---------- Main content area ---------- */
.main{
  margin-left:250px;
  flex:1;
  min-width:0;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}

/* ---------- Topbar ---------- */
.topbar{
  height:66px;
  background:var(--card-bg);
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 26px;
  position:sticky;
  top:0;
  z-index:50;
}

.topbar .page-title{
  font-size:18px;
  font-weight:600;
}
.topbar .page-sub{
  font-size:12.5px;
  color:var(--text-muted);
  margin-top:1px;
}

.menu-toggle{
  display:none;
  background:none;border:none;
  font-size:20px;cursor:pointer;
  margin-right:12px;
  color:var(--text-dark);
}

.topbar-right{
  display:flex;
  align-items:center;
  gap:18px;
}

.topbar-date{
  font-size:13px;
  color:var(--text-muted);
  background:var(--bg);
  padding:7px 14px;
  border-radius:20px;
}

.topbar-user{
  display:flex;align-items:center;gap:10px;
  cursor:pointer;
}
.topbar-user .avatar{
  width:36px;height:36px;border-radius:50%;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:13.5px;
}
.topbar-user .u-info strong{display:block;font-size:13.5px;}
.topbar-user .u-info span{font-size:11.5px;color:var(--text-muted);}

/* ---------- Content wrapper ---------- */
.content{
  padding:26px;
  flex:1;
}

/* ---------- Stat cards ---------- */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  margin-bottom:24px;
}

.stat-card{
  background:var(--card-bg);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow);
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  border:1px solid var(--border);
}

.stat-card .s-info span{
  display:block;font-size:12.5px;color:var(--text-muted);margin-bottom:6px;
}
.stat-card .s-info strong{
  font-size:25px;font-weight:700;
}
.stat-card .s-info small{
  display:block;margin-top:6px;font-size:12px;color:var(--success);font-weight:600;
}
.stat-card .s-icon{
  width:44px;height:44px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;
  flex-shrink:0;
}
.icon-indigo{background:var(--primary-light);color:var(--primary);}
.icon-green{background:var(--success-bg);color:var(--success);}
.icon-red{background:var(--danger-bg);color:var(--danger);}
.icon-amber{background:var(--warning-bg);color:var(--warning);}
.icon-blue{background:var(--info-bg);color:var(--info);}

/* ---------- Card / panel ---------- */
.card{
  background:var(--card-bg);
  border-radius:var(--radius);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  margin-bottom:24px;
}
.card-head{
  padding:18px 22px;
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
}
.card-head h3{font-size:15.5px;font-weight:600;}
.card-head p{font-size:12.5px;color:var(--text-muted);margin-top:2px;}
.card-body{padding:22px;}

.two-col{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:20px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:10px 18px;
  border-radius:9px;
  font-size:13.5px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .15s, border-color .15s, color .15s;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);}
.btn-outline{background:#fff;border-color:var(--border);color:var(--text-dark);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn-danger{background:var(--danger-bg);color:var(--danger);}
.btn-danger:hover{background:#fecaca;}
.btn-sm{padding:6px 12px;font-size:12.5px;}
.btn-block{width:100%;justify-content:center;}

/* ---------- Forms ---------- */
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.form-group{margin-bottom:16px;display:flex;flex-direction:column;gap:6px;}
.form-group label{font-size:13px;font-weight:600;color:var(--text-dark);}
.form-group .hint{font-size:11.5px;color:var(--text-muted);font-weight:400;}

input[type=text],
input[type=email],
input[type=password],
input[type=date],
input[type=number],
input[type=tel],
select,
textarea{
  width:100%;
  padding:10px 13px;
  border:1px solid var(--border);
  border-radius:8px;
  font-size:13.5px;
  font-family:inherit;
  background:#fff;
  color:var(--text-dark);
  outline:none;
  transition:border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px var(--primary-light);
}
textarea{resize:vertical;min-height:80px;}

.search-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
}
.search-row input, .search-row select{width:auto;flex:1;min-width:160px;}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;}
table{
  width:100%;
  border-collapse:collapse;
  font-size:13.5px;
}
thead th{
  text-align:left;
  padding:12px 14px;
  background:var(--bg);
  color:var(--text-muted);
  font-weight:600;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.03em;
  white-space:nowrap;
}
thead th:first-child{border-radius:8px 0 0 8px;}
thead th:last-child{border-radius:0 8px 8px 0;}
tbody td{
  padding:13px 14px;
  border-bottom:1px solid var(--border);
  vertical-align:middle;
}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#fafafe;}

.cell-user{display:flex;align-items:center;gap:10px;}
.cell-user .mini-avatar{
  width:34px;height:34px;border-radius:50%;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:12.5px;flex-shrink:0;
}
.cell-user strong{display:block;font-size:13.5px;}
.cell-user span{font-size:12px;color:var(--text-muted);}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:5px;
  padding:4px 11px;
  border-radius:20px;
  font-size:11.5px;
  font-weight:600;
}
.badge-success{background:var(--success-bg);color:var(--success);}
.badge-danger{background:var(--danger-bg);color:var(--danger);}
.badge-warning{background:var(--warning-bg);color:var(--warning);}
.badge-info{background:var(--info-bg);color:var(--info);}
.badge-muted{background:#f1f1f4;color:var(--text-muted);}

/* ---------- Attendance mark buttons ---------- */
.attend-toggle{display:flex;gap:6px;}
.attend-btn{
  width:36px;height:36px;
  border-radius:8px;
  border:1px solid var(--border);
  background:#fff;
  cursor:pointer;
  font-size:14px;
  display:flex;align-items:center;justify-content:center;
  transition:all .15s;
  color:var(--text-muted);
}
.attend-btn.present.active{background:var(--success);border-color:var(--success);color:#fff;}
.attend-btn.absent.active{background:var(--danger);border-color:var(--danger);color:#fff;}
.attend-btn.leave.active{background:var(--warning);border-color:var(--warning);color:#fff;}
.attend-btn:hover{border-color:var(--primary);}
.attend-toggle.marked .attend-btn{
  opacity:.45;
  background:#f1f1f4;
  border-color:#f1f1f4;
  color:var(--text-muted);
  cursor:not-allowed;
}
.attend-toggle.marked .attend-btn.active{
  opacity:1;
  cursor:pointer;
}
.attend-toggle.marked .attend-btn.present.active{background:var(--success);border-color:var(--success);color:#fff;}
.attend-toggle.marked .attend-btn.absent.active{background:var(--danger);border-color:var(--danger);color:#fff;}
.attend-toggle.marked .attend-btn.leave.active{background:var(--warning);border-color:var(--warning);color:#fff;}
.attend-toggle.marked .attend-btn:not(.active):hover{border-color:#f1f1f4;}

/* ---------- Pagination ---------- */
.pagination{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 22px;
  border-top:1px solid var(--border);
  font-size:12.5px;
  color:var(--text-muted);
}
.pagination .p-btns{display:flex;gap:6px;}
.pagination button{
  width:32px;height:32px;
  border-radius:7px;
  border:1px solid var(--border);
  background:#fff;
  cursor:pointer;
  font-size:12.5px;
}
.pagination button.active{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ---------- Login page ---------- */
.auth-wrap{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,#4f46e5 0%,#3730a3 100%);
  padding:20px;
}
.auth-box{
  background:#fff;
  border-radius:16px;
  width:100%;
  max-width:920px;
  display:grid;
  grid-template-columns:1fr 1fr;
  overflow:hidden;
  box-shadow:0 20px 50px rgba(0,0,0,.25);
}
.auth-side{
  background:linear-gradient(160deg,#4f46e5,#312e81);
  color:#fff;
  padding:46px 40px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.auth-side .logo-badge{
  width:46px;height:46px;background:rgba(255,255,255,.15);
  border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;margin-bottom:24px;
}
.auth-side h2{font-size:23px;margin-bottom:10px;}
.auth-side p{font-size:13.5px;color:#d8d5f7;line-height:1.6;}
.auth-side .role-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}
.auth-side .role-pills span{
  background:rgba(255,255,255,.12);
  padding:6px 13px;border-radius:20px;font-size:12px;
}
.auth-form{padding:46px 40px;display:flex;flex-direction:column;justify-content:center;}
.auth-form h3{font-size:21px;margin-bottom:6px;}
.auth-form p.sub{font-size:13px;color:var(--text-muted);margin-bottom:26px;}
.role-select{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:8px;
  margin-bottom:20px;
}
.role-select label{
  border:1px solid var(--border);
  border-radius:8px;
  text-align:center;
  padding:9px 4px;
  font-size:12px;
  font-weight:600;
  cursor:pointer;
  color:var(--text-muted);
}
.role-select input{display:none;}
.role-select input:checked + label{
  border-color:var(--primary);
  background:var(--primary-light);
  color:var(--primary);
}
.auth-form .form-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin:6px 0 20px;font-size:12.5px;
}
.auth-form .form-foot a{color:var(--primary);font-weight:600;}
.auth-note{
  margin-top:20px;padding:12px 14px;background:var(--bg);
  border-radius:8px;font-size:12px;color:var(--text-muted);
}

/* ---------- Utilities ---------- */
.text-muted{color:var(--text-muted);}
.mt-0{margin-top:0;}
.d-flex{display:flex;}
.gap-8{gap:8px;}
.align-center{align-items:center;}
.justify-between{justify-content:space-between;}
.flex-wrap{flex-wrap:wrap;}

/* ---------- Student profile header (attendance detail page) ---------- */
.profile-head{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.profile-head .p-avatar{
  width:56px;height:56px;border-radius:50%;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:20px;flex-shrink:0;
}
.profile-head h3{font-size:17px;}
.profile-head .p-meta{font-size:12.5px;color:var(--text-muted);margin-top:3px;}
.profile-head .p-meta span{margin-right:10px;}

/* ---------- Month calendar grid ---------- */
.cal-grid{
  display:grid;
  grid-template-columns:repeat(7,1fr);
  gap:8px;
}
.cal-dow{
  text-align:center;
  font-size:11px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:var(--text-muted);
  padding-bottom:4px;
}
.cal-cell{
  aspect-ratio:1/1;
  border-radius:10px;
  border:1px solid var(--border);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:13px;
  background:#fff;
}
.cal-cell.empty{border:none;background:transparent;}
.cal-cell .d-num{font-weight:700;font-size:13.5px;}
.cal-cell .d-tag{font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:1px 6px;border-radius:20px;}
.cal-cell.present{background:var(--success-bg);border-color:#bbf0cf;}
.cal-cell.present .d-tag{background:var(--success);color:#fff;}
.cal-cell.absent{background:var(--danger-bg);border-color:#fbcaca;}
.cal-cell.absent .d-tag{background:var(--danger);color:#fff;}
.cal-cell.leave{background:var(--warning-bg);border-color:#fbe3a6;}
.cal-cell.leave .d-tag{background:var(--warning);color:#fff;}
.cal-cell.weekend{background:var(--bg);color:var(--text-muted);}
.cal-cell.weekend .d-tag{background:#e2e2ea;color:var(--text-muted);}
.cal-cell.holiday{background:var(--info-bg);border-color:#bde3f7;}
.cal-cell.holiday .d-tag{background:var(--info);color:#fff;}
.cal-cell.future{background:#fff;color:#c7c9d4;border-style:dashed;}
.cal-legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--text-muted);}
.cal-legend span{display:inline-flex;align-items:center;gap:6px;}
.cal-legend i{width:10px;height:10px;border-radius:3px;display:inline-block;}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .two-col{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
}

@media (max-width:900px){
  .auth-box{grid-template-columns:1fr;}
  .auth-side{display:none;}
}

@media (max-width:840px){
  .sidebar{transform:translateX(-100%);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;}
  .menu-toggle{display:inline-block;}
  .stats-grid{grid-template-columns:1fr;}
  .role-select{grid-template-columns:repeat(2,1fr);}
}