:root {
  --brand-primary: #1a5276;
  --brand-secondary: #2e86c1;
  --brand-teal: #17a589;
  --brand-light: #eaf4fb;
}

/* ---- Global ---- */
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.app-bg {
  background-color: #f0f4f8;
  min-height: 100vh;
}

/* ---- Navbar ---- */
.app-navbar {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  padding: 0.75rem 0;
}

/* ---- Login page ---- */
.login-bg {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
  border: none;
}

/* ---- Login logo ---- */
.login-logo {
  max-width: 200px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 8px;
}

.brand-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-teal));
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.brand-title {
  color: var(--brand-primary);
  letter-spacing: -0.5px;
}

.demo-credentials {
  background: var(--brand-light);
  border: 1px solid #bde0f5;
}

/* ---- Patient profile ---- */
.patient-avatar {
  font-size: 3.5rem;
  color: var(--brand-secondary);
  line-height: 1;
}

.patient-id-badge {
  background: var(--brand-primary);
  font-size: 0.85rem;
}

.patient-banner {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
}

/* ---- Form buttons on patient page ---- */
.form-btn-card {
  display: block;
  border: 1px solid #dee2e6;
  border-radius: 12px;
  background: white;
  transition: all 0.15s ease;
  color: inherit;
}

.form-btn-card:hover {
  border-color: var(--brand-secondary);
  box-shadow: 0 4px 12px rgba(46, 134, 193, 0.15);
  transform: translateY(-1px);
}

.form-btn-icon {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---- Card header ---- */
.card-header {
  background: var(--brand-light);
  border-bottom: 1px solid #d0e8f5;
  padding: 0.85rem 1.25rem;
}

/* ---- Success page ---- */
.success-icon {
  font-size: 5rem;
}

/* ---- GPS Gate Overlay ---- */
.gps-gate-overlay {
  position: fixed;
  inset: 0;                          /* top/right/bottom/left = 0 */
  background: white;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem 1.5rem;
  overflow-y: auto;
  transition: opacity 0.3s ease;
}

.gps-gate-overlay.gps-gate-fade {
  opacity: 0;
  pointer-events: none;
}

.gps-instructions-box {
  background: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 10px;
  padding: 16px 20px;
  margin-top: 12px;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}

/* ---- Buttons ---- */
.btn-primary {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
}

.btn-primary:hover {
  background: var(--brand-secondary);
  border-color: var(--brand-secondary);
}

.btn-outline-primary {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.btn-outline-primary:hover {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
}

/* ---- Breadcrumb ---- */
.breadcrumb-item a {
  color: var(--brand-secondary);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  text-decoration: underline;
}

/* ── Mobile touch optimisations (all SA phones ≤575 px) ──────────────────── */
/*    Covers: iPhone SE/12/13/14, Samsung A/M/S series, Tecno, Infinix, Pixel  */
@media (max-width: 575px) {
  /* Larger touch targets for nurses */
  .form-control,
  .form-select,
  .btn {
    min-height: 44px;
  }

  /* Tighter container padding */
  .container {
    padding-left: 12px;
    padding-right: 12px;
  }

  /* Patient banner text wrapping */
  .patient-banner {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  /* Form button cards */
  .form-btn-card .d-flex {
    padding: 0.85rem !important;
  }

  /* Patient header — reduce avatar + gap on medium-small phones */
  .patient-avatar {
    font-size: 2.8rem;
  }
}

/* ── 360 px — Samsung Galaxy A/M series, Tecno Spark, Infinix Hot, Huawei Y9 ── */
/*    The most common budget-phone width sold in South Africa                     */
@media (max-width: 360px) {
  .container {
    padding-left: 8px;
    padding-right: 8px;
  }

  .patient-avatar {
    font-size: 2.2rem;
  }

  .form-btn-icon {
    width: 42px;
    height: 42px;
  }

  .form-btn-card .fw-semibold {
    font-size: 0.85rem;
  }

  /* Compact badges */
  .patient-id-badge,
  .badge {
    font-size: 0.72rem;
    padding: 0.25em 0.45em;
  }

  /* Navbar brand */
  .navbar-brand {
    font-size: 0.95rem;
  }

  /* Card headers */
  .card-header {
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }

  /* Login page */
  .brand-title {
    font-size: 1.4rem;
  }

  .brand-icon {
    width: 52px;
    height: 52px;
    font-size: 1.6rem;
  }
}

/* ── 320 px — Samsung Galaxy J2/J5, Nokia C series, older Huawei, iPhone SE 1st-gen ── */
@media (max-width: 320px) {
  .container {
    padding-left: 6px;
    padding-right: 6px;
  }

  .patient-avatar {
    font-size: 1.8rem;
  }

  .form-btn-icon {
    width: 36px;
    height: 36px;
  }

  .form-btn-card .d-flex {
    padding: 0.6rem !important;
    gap: 0.5rem !important;
  }

  /* GPS check-in button fills width on tiny screens */
  #gps-checkin-btn {
    width: 100%;
    margin-top: 0.25rem;
  }

  /* Patient info table */
  .table-sm td {
    font-size: 0.82rem;
    padding: 0.2rem 0.4rem;
  }

  h4.fw-bold {
    font-size: 1rem;
  }

  /* Login card */
  .login-card {
    border-radius: 8px;
  }

  .brand-icon {
    width: 44px;
    height: 44px;
    font-size: 1.4rem;
    border-radius: 10px;
  }

  .login-logo {
    max-width: 140px;
  }
}

/* ── 300 px — absolute minimum (very old feature phones, tiny Huawei/ZTE devices) ── */
@media (max-width: 300px) {
  .container {
    padding-left: 4px;
    padding-right: 4px;
  }

  .patient-avatar {
    font-size: 1.4rem;
  }

  .form-btn-icon {
    width: 30px;
    height: 30px;
  }

  .form-btn-card .d-flex {
    padding: 0.4rem !important;
    gap: 0.35rem !important;
    flex-wrap: wrap;
  }

  .badge {
    font-size: 0.65rem;
    padding: 0.2em 0.35em;
  }

  .card-header {
    padding: 0.5rem 0.75rem;
    font-size: 0.82rem;
  }

  h4.fw-bold {
    font-size: 0.9rem;
  }

  .login-logo {
    max-width: 110px;
  }

  /* GPS gate overlay — more compact */
  .gps-gate-overlay h5 {
    font-size: 1rem;
  }

  .gps-instructions-box {
    padding: 10px 12px;
    font-size: 0.8rem;
  }

  .navbar-brand {
    font-size: 0.85rem;
  }
}