:root{
  --sidebar-bg: #0b2f6b;        /* deep royal navy */
  --sidebar-bg-active: #123c82;
  --brand: #1668d6;             /* bright royal blue */
  --brand-dark: #0f4c9e;
  --accent: #1668d6;
  --accent-2: #12a06b;          /* green for positive/success */
  --bg: #f2f6fd;
  --card-border: #e2e9f6;
  --card-shadow: 0 1px 2px rgba(15,45,107,.05), 0 6px 20px rgba(15,45,107,.06);
  --radius: 16px;
  --radius-sm: 11px;
}

* { box-sizing: border-box; }

body{
  background: var(--bg);
  font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: #14213d;
  -webkit-font-smoothing: antialiased;
}

/* Sidebar */
.sidebar{
  width: 236px;
  min-height: 100vh;
  background: var(--sidebar-bg);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  padding: 20px 12px;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
}
.sidebar-brand{
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  padding: 6px 14px 20px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-brand .dot{
  width: 10px; height: 10px; border-radius: 50%;
  background: #4d92ff;
  box-shadow: 0 0 10px #4d92ff;
}
.sidebar .nav-link{
  color: #9db2d8;
  padding: 10px 13px;
  border-radius: 10px;
  margin-bottom: 3px;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  transition: background .15s ease, color .15s ease;
}
.sidebar .nav-link i{ font-size: 1.05rem; width: 20px; text-align: center; }
.sidebar .nav-link:hover{ background: rgba(255,255,255,0.06); color: #fff; }
.sidebar .nav-link.active{
  background: rgba(255,255,255,0.09);
  color: #fff;
}
.sidebar .nav-link.active::before{
  content:""; position:absolute; left:-12px; top:8px; bottom:8px;
  width:4px; border-radius:0 4px 4px 0; background: #4d92ff;
}
.sidebar .nav-section{
  color: #52689a;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  margin: 18px 14px 8px;
  font-weight: 600;
}

/* Main area */
.main{
  margin-left: 236px;
  min-height: 100vh;
}
.topbar{
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(1.4) blur(8px);
  padding: 13px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar h4{ margin:0; font-weight: 700; font-size: 1.12rem; letter-spacing:-.01em; }
.topbar .search-box{
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 7px 14px;
  display:flex; align-items:center; gap:8px;
  width: 280px;
}
.topbar .search-box input{
  border:none; background:transparent; outline:none; width:100%; font-size:.88rem;
}
.content{ padding: 24px 28px 60px; }

/* Cards */
.card-app{
  background:#fff;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--card-border);
  padding: 20px 22px;
}

/* KPI / stat tiles — flat, clean */
.stat-card{
  border-radius: var(--radius);
  padding: 18px 20px;
  color: #fff;
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}
.stat-card .stat-icon{
  width: 40px; height:40px; border-radius: 11px;
  background: rgba(255,255,255,.20);
  display:flex; align-items:center; justify-content:center;
  font-size: 1.15rem;
  margin-bottom: 12px;
}
.stat-card .stat-value{ font-size: 1.55rem; font-weight: 800; letter-spacing:-.02em; }
.stat-card .stat-label{ font-size: .8rem; opacity: .92; }
.bg-grad-blue{ background: #1668d6; }
.bg-grad-green{ background: #12a06b; }
.bg-grad-orange{ background: #ef8f27; }
.bg-grad-purple{ background: #5b6ee0; }
.bg-grad-dark{ background: #14213d; }

.table-app{ width:100%; border-collapse: collapse; }
.table-app thead th{
  background: #f4f7fd;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: #6f7ca0;
  font-weight: 600;
  border: none;
  padding: 11px 14px;
  white-space: nowrap;
}
.table-app tbody td{
  padding: 11px 14px;
  font-size: .87rem;
  border-top: 1px solid #eef2fa;
  white-space: nowrap;
}
.table-app tbody tr:hover{ background: #f6f9ff; }
.table-app tfoot td{ padding: 11px 14px; border-top: 2px solid #e6ecf7; font-size:.87rem; }

.badge-status{
  padding: 3px 10px;
  border-radius: 8px;
  font-size: .72rem;
  font-weight: 600;
  display:inline-block;
}
.badge-open{ background:#fef4dc; color:#9a6b00; }
.badge-billed{ background:#e0ecff; color:#1657c8; }
.badge-acknowledged{ background:#d9f5ea; color:#0f7a4f; }
.badge-present{ background:#d9f5ea; color:#0f7a4f; }
.badge-absent{ background:#ffe3e3; color:#b5302a; }
.badge-leave{ background:#fef4dc; color:#9a6b00; }
.badge-halfday{ background:#e6e6ff; color:#4a45c0; }

.section-title{
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 15px;
  display:flex; align-items:center; gap:8px;
  letter-spacing:-.01em;
}

.btn-app{
  background: var(--brand);
  border: none;
  color: #fff;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .88rem;
  transition: background .15s ease, transform .05s ease;
}
.btn-app:hover{ background: var(--brand-dark); color:#fff; }
.btn-app:active{ transform: scale(.98); }

.form-label{ font-size:.82rem; font-weight:600; color:#414d70; margin-bottom:4px; }
.form-control, .form-select{
  border-radius: 10px;
  border: 1px solid #dfe4f1;
  font-size: .88rem;
  padding: 9px 12px;
  background:#fff;
}
.form-control:focus, .form-select:focus{
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(22,104,214,.13);
}

.filter-card{
  background:#fff; border-radius: var(--radius); box-shadow: var(--card-shadow);
  border:1px solid var(--card-border);
  padding: 18px 20px; margin-bottom: 20px;
}

/* Hamburger + mobile drawer */
.hamburger{
  display:none; background:none; border:none; font-size:1.6rem; line-height:1;
  color:#14213d; padding:2px 8px; margin-right:2px; cursor:pointer; border-radius:8px;
}
.hamburger:hover{ background:#e8eefb; }
.sidebar-overlay{ display:none; position:fixed; inset:0; background:rgba(10,20,50,.5); z-index:99; }
.sidebar-overlay.show{ display:block; }

@media (max-width: 820px){
  .sidebar{
    transform: translateX(-100%);
    transition: transform .25s ease;
    width: 264px;
  }
  .sidebar.open{ transform: translateX(0); box-shadow: 0 0 50px rgba(0,0,0,.6); }
  .main{ margin-left: 0; }
  .hamburger{ display:inline-flex; align-items:center; }
  .topbar{ padding: 12px 16px; }
  .topbar .search-box{ display:none; }
  .topbar h4{ font-size: 1.05rem; }
  .content{ padding: 16px 14px 60px; }
}