:root {
  --primary: #0f4c81;
  --primary-dark: #0a365c;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #cbd5e1;
  --green: #16a34a;
  --green-bg: #dcfce7;
  --amber: #d97706;
  --amber-bg: #fef3c7;
  --red: #dc2626;
  --red-bg: #fee2e2;
}

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

body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
  padding-bottom: 70px;
}

.topbar {
  background: var(--primary);
  color: #ffffff;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.topbar h1 { font-size: 17px; }
.topbar small { display: block; font-size: 12px; opacity: 0.85; }

.btn-adult-link {
  background: #ffffff;
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
  font-size: 12.5px;
  padding: 7px 12px;
  border-radius: 8px;
  white-space: nowrap;
}

.container {
  max-width: 780px;
  margin: 0 auto;
  padding: 14px;
}

.pin-screen {
  max-width: 380px;
  margin: 40px auto;
  background: var(--card);
  border-radius: 14px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.pin-screen h2 { font-size: 20px; color: var(--primary); margin-bottom: 6px; }
.pin-screen p { font-size: 13.5px; color: var(--muted); margin-bottom: 16px; }

.pin-input {
  width: 100%;
  font-size: 24px;
  letter-spacing: 8px;
  text-align: center;
  padding: 10px;
  border: 2px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary { background: var(--primary); color: #ffffff; width: 100%; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--green); color: #ffffff; }
.btn-outline { background: #ffffff; color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--red-bg); color: var(--red); border: 1px solid #fca5a5; }
.btn-sm { padding: 6px 10px; font-size: 12.5px; }

.caregiver-bar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.caregiver-bar label { font-size: 13px; font-weight: 600; color: var(--muted); }
.caregiver-bar input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  width: 170px;
}

.alert-banner {
  background: var(--amber-bg);
  border: 1.5px solid var(--amber);
  color: #78350f;
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 13px;
}

.slot-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
}

.slot-card.taken {
  border-color: var(--green);
  background: #f0fdf4;
}

.slot-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e2e8f0;
}

.slot-name { font-size: 16px; font-weight: 800; color: var(--primary); }
.slot-time { font-size: 13px; color: var(--muted); font-weight: 600; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}
.badge-pending { background: #e2e8f0; color: #334155; }
.badge-taken { background: var(--green-bg); color: #166534; }
.badge-warn { background: var(--amber-bg); color: #92400e; }
.badge-danger { background: var(--red-bg); color: #991b1b; }

.med-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 13.5px;
  border-bottom: 1px dashed #e2e8f0;
  gap: 8px;
}
.med-row:last-child { border-bottom: none; }
.med-dose { font-weight: 700; white-space: nowrap; }
.med-dose.half { color: #92400e; background: var(--amber-bg); padding: 2px 6px; border-radius: 4px; }

.slot-footer {
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 14px;
}

.form-card h3 { font-size: 15px; color: var(--primary); margin-bottom: 10px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.form-grid input, .form-full {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.list-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  z-index: 30;
}

.nav-btn {
  border: none;
  background: transparent;
  padding: 10px 4px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
}

.nav-btn.active {
  color: var(--primary);
  border-top: 3px solid var(--primary);
  background: #eff6ff;
}

.hidden { display: none !important; }