:root {
  --bg: #ffffff;
  --surface: #f7fbff;
  --surface-alt: #eef6fb;
  --text: #243447;
  --heading: #0f2f5f;
  --primary: #1f8f5f;
  --primary-dark: #156847;
  --primary-soft: #e7f7ef;
  --border: #cfdbe8;
  --focus: #ffbf47;
  --danger: #c7372f;
  --shadow: 0 10px 24px rgba(15, 47, 95, 0.08);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 18px;
  line-height: 1.7;
  padding-bottom: 96px;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0;
  color: var(--heading);
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 4rem);
  margin-bottom: 16px;
}

h2 {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  margin-bottom: 14px;
}

h3 {
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  margin-bottom: 10px;
}

p,
li,
label,
input,
select,
textarea,
button {
  font-size: 1rem;
}

ul {
  margin: 0;
  padding-left: 24px;
}

.skip-link {
  position: absolute;
  top: -56px;
  left: 16px;
  z-index: 10;
  background: var(--heading);
  color: #ffffff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
}

.skip-link:focus {
  top: 16px;
}

.site-header,
main,
.site-footer {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  padding: 24px 0 18px;
}

.accessibility-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
  padding: 14px 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow);
}

.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.toolbar-label {
  font-weight: 700;
  color: var(--heading);
}

.toolbar-select {
  width: auto;
  min-width: 160px;
  min-height: 52px;
}

.toggle-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border);
  background: #ffffff;
  color: var(--heading);
  font-weight: 700;
  cursor: pointer;
}

.toggle-button.is-active,
.icon-button.is-active {
  background: #dcecff;
  border-color: #97b7dd;
}

.main-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
}

.main-nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 62px;
  padding: 14px 18px;
  background: var(--surface-alt);
  color: var(--heading);
  text-decoration: none;
  font-weight: 700;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.main-nav a[aria-current="page"],
.main-nav a:hover,
.main-nav a:focus-visible {
  background: #dcecff;
  border-color: #97b7dd;
  outline: none;
  transform: translateY(-1px);
}

main {
  padding: 16px 0 44px;
}

.card,
.search-section,
.actions-section,
.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero {
  padding: 40px 32px;
  margin-bottom: 28px;
}

.hero-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-subtitle {
  margin: 0;
  color: #46617f;
  font-size: 1.15rem;
}

.step-note {
  margin: 0 0 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 700;
}

.section-label {
  margin: 0 0 10px;
  color: var(--primary-dark);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-heading {
  margin-bottom: 16px;
}

.search-section,
.actions-section {
  padding: 24px;
  margin-bottom: 28px;
}

.search-panel {
  padding: 22px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.search-row {
  display: flex;
  align-items: stretch;
  gap: 14px;
  margin-top: 12px;
}

.voice-search-button {
  min-width: 88px;
}

.suggestion-box {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.suggestion-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--primary-soft);
  border: 2px solid #a7d4bb;
  color: var(--primary-dark);
  font-weight: 700;
  cursor: pointer;
}

input,
select,
textarea {
  width: 100%;
  min-height: 62px;
  padding: 14px 16px;
  border: 2px solid #a7bad0;
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: #5f738c;
}

button,
.secondary-button,
.primary-button,
.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 62px;
  padding: 14px 24px;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover,
button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible,
.primary-button:hover,
.primary-button:focus-visible,
.action-button:hover,
.action-button:focus-visible {
  background: var(--primary-dark);
  outline: none;
  transform: translateY(-1px);
}

.emergency-button {
  background: var(--danger);
}

.emergency-button:hover,
.emergency-button:focus-visible {
  background: #97251f;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.help-text {
  margin: 10px 0 0;
  color: #566b84;
}

.success-text {
  color: var(--primary-dark);
  font-weight: 700;
}

.error-text {
  color: #b42318;
  font-weight: 700;
}

.specialties-section,
.hospitals-section {
  margin-top: 30px;
}

.specialties-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.hospitals-grid,
.doctor-grid,
.doctor-cards,
.hospital-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.specialty-card,
.hospital-card,
.doctor-card {
  padding: 24px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.specialty-card p,
.hospital-card p,
.doctor-card p {
  margin-bottom: 0;
}

.doctor-card {
  position: relative;
}

.doctor-card .doctor-meta,
.hospital-card .hospital-meta {
  color: #56708d;
}

.doctor-card .primary-button,
.doctor-card .secondary-button,
.hospital-card .primary-button {
  width: 100%;
  margin-top: 12px;
}

.profile-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 20px;
  margin-top: 30px;
}

.profile-card {
  padding: 28px;
}

.doctor-profile-header {
  display: flex;
  align-items: center;
  gap: 24px;
}

.doctor-photo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 180px;
  height: 180px;
  border-radius: 28px;
  background: linear-gradient(135deg, #dcecff 0%, #eef6fb 100%);
  border: 2px solid #b9cee3;
  color: var(--heading);
  font-size: 2rem;
  font-weight: 700;
}

.doctor-profile-info p {
  margin: 0 0 10px;
}

.time-slots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 20px 0 24px;
}

.time-slot-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 64px;
  padding: 14px 20px;
  border: 2px solid #a7bad0;
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--heading);
  text-decoration: none;
  font-weight: 700;
}

.time-slot-button:hover,
.time-slot-button:focus-visible {
  background: #e7f7ef;
  border-color: var(--primary);
  outline: none;
}

.profile-book-button {
  width: 100%;
}

.booking-summary {
  margin-bottom: 18px;
}

.dashboard-sections {
  display: grid;
  gap: 24px;
  margin-top: 30px;
}

.records-layout {
  display: grid;
  gap: 24px;
  margin-top: 30px;
}

.dashboard-panel {
  padding: 24px;
}

.dashboard-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.upload-grid,
.records-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.upload-card,
.record-card {
  padding: 22px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.upload-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 14px 22px;
  margin-top: 8px;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  border: 2px solid #a7d4bb;
  color: var(--primary-dark);
  font-weight: 700;
  cursor: pointer;
}

.upload-label:hover,
.upload-label:focus-visible {
  background: #d8f1e2;
  outline: none;
}

.record-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.utility-card {
  padding: 20px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.wait-time-text {
  color: var(--primary-dark);
  font-weight: 700;
}

.emergency-fab {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  min-width: 180px;
  min-height: 64px;
  padding: 14px 18px;
  border: none;
  border-radius: 999px;
  background: var(--danger);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(199, 55, 47, 0.28);
  cursor: pointer;
}

.overlay-backdrop {
  position: fixed;
  inset: 0;
  z-index: 35;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(15, 47, 95, 0.55);
}

.overlay-panel {
  width: min(720px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.overlay-panel h2 {
  margin-bottom: 12px;
}

.overlay-panel .action-buttons {
  margin-top: 18px;
}

.overlay-hidden {
  display: none;
}

.chatbot-toggle {
  position: fixed;
  left: 18px;
  bottom: 92px;
  z-index: 30;
  min-height: 58px;
  padding: 14px 18px;
  border: none;
  border-radius: 999px;
  background: var(--heading);
  color: #ffffff;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.chatbot-panel {
  position: fixed;
  left: 18px;
  bottom: 160px;
  z-index: 34;
  width: min(420px, calc(100% - 36px));
  padding: 18px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.chatbot-hidden {
  display: none;
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.chatbot-header h2 {
  margin-bottom: 0;
  font-size: 1.35rem;
}

.chatbot-messages {
  display: grid;
  gap: 12px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 4px;
  margin-bottom: 14px;
}

.chatbot-message {
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--radius-md);
}

.chatbot-message.bot {
  background: var(--surface-alt);
}

.chatbot-message.user {
  background: var(--primary-soft);
}

.chatbot-form {
  display: grid;
  gap: 12px;
}

.instruction-banner {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 16px auto 0;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 700;
}

body.senior-mode {
  font-size: 22px;
}

body.senior-mode .main-nav a,
body.senior-mode button,
body.senior-mode .secondary-button,
body.senior-mode .primary-button,
body.senior-mode .action-button,
body.senior-mode input,
body.senior-mode select,
body.senior-mode textarea,
body.senior-mode .time-slot-button,
body.senior-mode .upload-label,
body.senior-mode .toggle-button,
body.senior-mode .icon-button {
  min-height: 68px;
  padding: 16px 24px;
}

body.senior-mode .card,
body.senior-mode .search-section,
body.senior-mode .actions-section,
body.senior-mode .hero,
body.senior-mode .dashboard-panel {
  padding: 28px;
}

body.senior-mode .site-header,
body.senior-mode main,
body.senior-mode .site-footer,
body.senior-mode .instruction-banner,
body.senior-mode .accessibility-bar {
  width: min(var(--max-width), calc(100% - 20px));
}

body.high-contrast {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #ffffff;
  --text: #111111;
  --heading: #000000;
  --primary: #006b45;
  --primary-dark: #00472e;
  --primary-soft: #ecfff6;
  --border: #000000;
}

.action-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

form {
  width: 100%;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-actions {
  justify-content: flex-end;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-footer {
  padding: 0 0 36px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 22px;
  background: var(--heading);
  border-radius: var(--radius-lg);
}

.footer-nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  color: #ffffff;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.14);
  outline: none;
}

@media (max-width: 980px) {
  .specialties-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hospitals-grid,
  .doctor-grid,
  .doctor-cards,
  .dashboard-cards,
  .upload-grid,
  .records-grid,
  .hospital-list,
  .profile-layout,
  .form-grid,
  .action-buttons,
  .toolbar-group {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header,
  main,
  .site-footer {
    width: min(var(--max-width), calc(100% - 20px));
  }

  .hero,
  .search-section,
  .actions-section,
  .dashboard-panel,
  .profile-card,
  .upload-card,
  .record-card,
  .specialty-card,
  .hospital-card,
  .doctor-card {
    padding: 20px;
  }

  .doctor-profile-header,
  .time-slots,
  .main-nav,
  .footer-nav,
  .specialties-grid,
  .accessibility-bar {
    grid-template-columns: 1fr;
  }

  .accessibility-bar,
  .toolbar-group {
    display: grid;
  }

  .doctor-profile-header {
    display: block;
  }

  .doctor-photo {
    width: 140px;
    height: 140px;
    margin: 0 auto 18px;
  }

  .search-row {
    flex-direction: column;
  }

  .main-nav a,
  .footer-nav a,
  button,
  .secondary-button,
  .primary-button,
  .action-button,
  .toggle-button,
  .icon-button,
  input,
  select,
  textarea {
    min-height: 58px;
  }

  .emergency-fab {
    left: 10px;
    right: 10px;
    min-width: 0;
  }

  .chatbot-toggle,
  .chatbot-panel {
    left: 10px;
    width: calc(100% - 20px);
  }

  .chatbot-toggle {
    bottom: 86px;
  }
}