:root {
  --navy: #0D3B8E;
  --navy-dark: #0a2f72;
  --teal: #0891B2;
  --teal-dark: #077b98;
  --ink: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f4f6fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

a { text-decoration: none; }

.layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--navy);
  color: #cdd9f0;
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0 auto 0 0;
  padding: 18px 12px;
}
.sidebar .brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  padding: 8px 10px 18px;
  letter-spacing: .5px;
}
.sidebar .nav-link {
  color: #cdd9f0;
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 2px;
  font-size: .95rem;
  display: flex;
  gap: 10px;
  align-items: center;
}
.sidebar .nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar .nav-link.active { background: var(--teal); color: #fff; }
.sidebar-foot { margin-top: auto; border-top: 1px solid rgba(255,255,255,.12); padding-top: 12px; }
.sidebar-foot .user {
  padding: 8px 12px;
  font-size: .9rem;
  color: #fff;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.sidebar-foot .role {
  font-size: .7rem;
  text-transform: uppercase;
  background: rgba(255,255,255,.15);
  padding: 2px 6px;
  border-radius: 6px;
  letter-spacing: .5px;
}

/* Content */
.content {
  margin-left: 240px;
  flex: 1;
  padding: 22px 28px 48px;
  width: calc(100% - 240px);
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
}
.topbar h1 { font-size: 1.5rem; margin: 0; color: var(--navy); }

/* Cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: 12px;
  padding: 16px 18px;
}
.stat-card .label { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; }
.stat-card .value { font-size: 1.6rem; font-weight: 700; color: var(--navy); margin-top: 6px; }
.stat-card .sub { font-size: .82rem; color: var(--muted); margin-top: 4px; }
.stat-card.warn { border-left-color: #f59e0b; }
.stat-card.danger { border-left-color: #dc2626; }
.stat-card.ok { border-left-color: #16a34a; }

.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 22px;
}
.panel h2 { font-size: 1.05rem; color: var(--navy); margin: 0 0 14px; }

.table thead th { background: #f1f5fb; color: var(--navy); font-size: .8rem; text-transform: uppercase; letter-spacing: .3px; }
.table td, .table th { vertical-align: middle; }
.table-wrap { overflow-x: auto; }

.badge-pending { background: #fef3c7; color: #92400e; }
.badge-partial { background: #dbeafe; color: #1e40af; }
.badge-full { background: #dcfce7; color: #166534; }
.badge-overdue { background: #fee2e2; color: #991b1b; }
.badge-status { font-weight: 600; padding: .35em .6em; border-radius: 6px; font-size: .75rem; }

.btn-teal { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-dark); border-color: var(--teal-dark); color: #fff; }
.btn-navy { background: var(--navy); border-color: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-dark); color: #fff; }

/* Login */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  padding: 20px;
}
.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.login-card .brand { font-size: 1.7rem; font-weight: 700; color: var(--navy); text-align: center; margin-bottom: 4px; }
.login-card .tag { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: .9rem; }

.calc-box {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 10px;
  padding: 14px 16px;
}
.calc-box .row-line { display: flex; justify-content: space-between; padding: 4px 0; font-size: .92rem; }
.calc-box .row-line.total { border-top: 1px solid #bae6fd; margin-top: 6px; padding-top: 8px; font-weight: 700; color: var(--navy); }

.form-label { font-weight: 600; font-size: .85rem; color: #334155; }
.section-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; color: var(--teal); font-weight: 700; margin: 18px 0 10px; }

dl.detail { display: grid; grid-template-columns: 200px 1fr; row-gap: 8px; }
dl.detail dt { color: var(--muted); font-weight: 600; }
dl.detail dd { margin: 0; }

@media (max-width: 900px) {
  .sidebar { position: static; width: 100%; flex-direction: column; }
  .content { margin-left: 0; width: 100%; }
  .layout { flex-direction: column; }
  dl.detail { grid-template-columns: 1fr; }
  dl.detail dt { margin-top: 8px; }
}