:root {
  --primary: #e53935;
  --primary-dark: #b71c1c;
  --primary-light: #ffcdd2;
  --bg: #f5f5f5;
  --card-bg: #ffffff;
  --text: #212121;
  --text-muted: #757575;
  --border: #e0e0e0;
  --success: #2e7d32;
  --warning: #f57f17;
  --danger: #c62828;
  --info: #1565c0;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* NAVBAR */
.navbar {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: white;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.brand {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.nav-links { display: flex; gap: 4px; }

.nav-link {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.nav-link:hover, .nav-link.active {
  color: white;
  background: rgba(255,255,255,0.2);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
}

.btn-logout {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-logout:hover { background: rgba(255,255,255,0.28); }

/* AUTH OVERLAY */
#auth-overlay {
  position: fixed;
  inset: 0;
  background: #fff;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  overflow-y: auto;
}

.auth-page-header {
  background: #c62828;
  color: #fff;
  padding: 14px 24px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  flex-shrink: 0;
}

.auth-page-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 20px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  text-align: center;
}

.auth-logo {
  width: 210px;
  margin-bottom: 28px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  padding: 12px 8px;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  background: transparent;
  font-size: 1rem;
  color: #757575;
  cursor: pointer;
  transition: all 0.2s;
}
.auth-tab.active {
  color: #2e7d32;
  border-bottom-color: #2e7d32;
  font-weight: 600;
}

.auth-form { text-align: left; }

.auth-form .form-group {
  margin-bottom: 14px;
  min-width: unset;
  flex: unset;
}

.pw-wrap { position: relative; }

.pw-eye {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: #9e9e9e;
  font-size: 1rem;
  padding: 4px;
  line-height: 1;
}

.auth-form input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 0.95rem;
  background: #f9f9f9;
  color: #212121;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}
.auth-form input:focus {
  border-color: #9e9e9e;
  background: #fff;
}

.auth-error {
  background: #ffebee;
  color: #c62828;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  margin-bottom: 14px;
  border-left: 3px solid #e53935;
}

.btn-auth-pill {
  width: 100%;
  padding: 14px;
  background: #e91e8c;
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 6px;
  letter-spacing: 0.5px;
  transition: background 0.2s;
}
.btn-auth-pill:hover { background: #c2185b; }

.auth-forgot {
  text-align: center;
  margin-top: 16px;
  font-size: 0.9rem;
  color: #757575;
}
.auth-forgot a { color: #555; text-decoration: none; }
.auth-forgot a:hover { text-decoration: underline; }

.btn-full { width: 100%; justify-content: center; padding: 12px; font-size: 1rem; }

.hidden { display: none !important; }

/* CONTAINER */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* TAB PANELS */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-dark);
}

/* SUMMARY CARDS */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.summary-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: transform 0.2s;
}
.summary-card:hover { transform: translateY(-2px); }

.bp-card { border-left-color: #e53935; }
.chol-card { border-left-color: #8e24aa; }
.food-card { border-left-color: #f4511e; }
.activity-card { border-left-color: #039be5; }
.labs-card { border-left-color: #00897b; }
.rx-card { border-left-color: #6d4c41; }

.card-icon { font-size: 2.2rem; }
.card-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.card-value { font-size: 1.6rem; font-weight: 700; margin: 4px 0; }
.card-badge { font-size: 0.8rem; font-weight: 600; }

/* CHARTS */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: 20px;
}

.chart-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.chart-card h3 {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 600;
}
.chart-card canvas { max-height: 220px; }

/* FORM CARDS */
.form-card, .table-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.form-card h3, .table-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 18px;
  color: var(--primary-dark);
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 160px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.form-group input,
.form-group select {
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text);
  background: white;
  transition: border-color 0.2s;
  outline: none;
}
.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
}

/* BUTTONS */
.btn {
  padding: 10px 22px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger {
  background: transparent;
  color: #e53935;
  font-size: 0.8rem;
  padding: 4px 8px;
  border: 1px solid #e5393540;
  border-radius: 6px;
}
.btn-danger:hover { background: #ffebee; }

/* TABLE */
.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.filter-row select {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
}

.table-wrapper { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
thead th {
  background: #fafafa;
  padding: 10px 12px;
  text-align: left;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
}
tbody td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:hover { background: #fafafa; }

/* BADGES */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.badge-normal { background: #e8f5e9; color: #2e7d32; }
.badge-elevated { background: #fff3e0; color: #e65100; }
.badge-high1 { background: #fce4ec; color: #c62828; }
.badge-high2 { background: #b71c1c; color: white; }
.badge-desirable { background: #e8f5e9; color: #2e7d32; }
.badge-borderline { background: #fff3e0; color: #e65100; }
.badge-high { background: #fce4ec; color: #c62828; }
.badge-low { background: #e3f2fd; color: #1565c0; }
.badge-moderate { background: #fff3e0; color: #e65100; }
.badge-hiigh { background: #fce4ec; color: #c62828; }
.badge-active { background: #e8f5e9; color: #2e7d32; }
.badge-inactive { background: #f5f5f5; color: #757575; }
.badge-refill { background: #fff3e0; color: #e65100; }
.badge-overdue { background: #fce4ec; color: #c62828; }

/* TOAST */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 22px;
  border-radius: 10px;
  background: #323232;
  color: white;
  font-size: 0.95rem;
  font-weight: 500;
  z-index: 9999;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  transition: opacity 0.3s;
}
.toast.success { background: #2e7d32; }
.toast.error { background: #c62828; }
.toast.hidden { opacity: 0; pointer-events: none; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .navbar { flex-direction: column; height: auto; padding: 12px 16px; gap: 8px; }
  .nav-links { flex-wrap: wrap; justify-content: center; }
  .charts-grid { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .form-row { flex-direction: column; }
}