/*
 * booking.css — TechGizmo Clinic Online Booking
 * Healthcare-professional aesthetic, mobile-first, WCAG AA contrast.
 * Accent colour driven by --accent CSS variable (set from ?color= param by booking.js).
 */

/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent:        #2563eb;
  --accent-dark:   #1d4ed8;
  --accent-light:  #dbeafe;
  --accent-text:   #ffffff;
  --success:       #16a34a;
  --success-light: #dcfce7;
  --error:         #dc2626;
  --error-light:   #fee2e2;
  --warn:          #d97706;
  --warn-light:    #fef3c7;
  --neutral-50:    #f8fafc;
  --neutral-100:   #f1f5f9;
  --neutral-200:   #e2e8f0;
  --neutral-300:   #cbd5e1;
  --neutral-400:   #94a3b8;
  --neutral-500:   #64748b;
  --neutral-600:   #475569;
  --neutral-700:   #334155;
  --neutral-800:   #1e293b;
  --neutral-900:   #0f172a;
  --radius-sm:     4px;
  --radius-md:     8px;
  --radius-lg:     12px;
  --radius-xl:     16px;
  --shadow-sm:     0 1px 2px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.08);
  --shadow-md:     0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:     0 10px 15px rgba(0,0,0,.07), 0 4px 6px rgba(0,0,0,.05);
  --transition:    150ms ease;
  --font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                   "Helvetica Neue", Arial, "Noto Sans", sans-serif,
                   "Apple Color Emoji", "Segoe UI Emoji";
}

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--neutral-800);
  background: var(--neutral-50);
  line-height: 1.5;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── Layout shell ─────────────────────────────────────────────────────────── */
.booking-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.booking-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Two-panel layout: branding left, form right */
@media (min-width: 640px) {
  .booking-main {
    flex-direction: row;
    min-height: calc(100dvh - 56px); /* minus footer */
  }
}

/* ── Branding panel ───────────────────────────────────────────────────────── */
.booking-brand {
  background: var(--accent);
  color: var(--accent-text);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
  min-height: 160px;
}

@media (min-width: 640px) {
  .booking-brand {
    width: 40%;
    min-width: 240px;
    max-width: 360px;
    min-height: unset;
    padding: 3rem 2rem;
    position: sticky;
    top: 0;
    height: 100vh;
    justify-content: center;
  }
}

.booking-brand__logo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  overflow: hidden;
  flex-shrink: 0;
}

.booking-brand__logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.booking-brand__name {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.25;
}

.booking-brand__tagline {
  font-size: .875rem;
  opacity: .85;
  line-height: 1.4;
}

.booking-brand__trust {
  display: flex;
  align-items: center;
  gap: .375rem;
  font-size: .75rem;
  opacity: .75;
  margin-top: .5rem;
}

/* ── Content panel ────────────────────────────────────────────────────────── */
.booking-content {
  flex: 1;
  padding: 1.5rem 1rem 2rem;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

@media (min-width: 640px) {
  .booking-content {
    padding: 2.5rem 2rem;
    max-width: 600px;
  }
}

@media (min-width: 900px) {
  .booking-content {
    padding: 3rem 3rem;
  }
}

/* ── Progress indicator ───────────────────────────────────────────────────── */
.progress-bar {
  display: flex;
  align-items: center;
  gap: .375rem;
  margin-bottom: 1.5rem;
}

.progress-bar__step {
  height: 4px;
  flex: 1;
  background: var(--neutral-200);
  border-radius: 999px;
  transition: background var(--transition);
}

.progress-bar__step--done   { background: var(--accent); }
.progress-bar__step--active { background: var(--accent); opacity: .5; }

.progress-label {
  font-size: .75rem;
  color: var(--neutral-500);
  margin-bottom: 1rem;
  margin-top: -.75rem;
}

/* ── Back button ─────────────────────────────────────────────────────────── */
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  font-size: .875rem;
  color: var(--neutral-500);
  background: none;
  border: none;
  cursor: pointer;
  padding: .25rem 0;
  margin-bottom: 1.25rem;
  transition: color var(--transition);
  text-decoration: none;
}

.btn-back:hover, .btn-back:focus-visible { color: var(--neutral-800); outline: none; }
.btn-back svg { width: 16px; height: 16px; }

/* ── Step heading ─────────────────────────────────────────────────────────── */
.step-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--neutral-900);
  line-height: 1.25;
  margin-bottom: .5rem;
  letter-spacing: -.02em;
}

.step-subheading {
  font-size: 1rem;
  color: var(--neutral-500);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

/* ── Patient type cards (Step 1) ─────────────────────────────────────────── */
.type-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .875rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 380px) {
  .type-cards { grid-template-columns: 1fr; }
}

.type-card {
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: 1.5rem 1rem;
  cursor: pointer;
  text-align: center;
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .625rem;
}

.type-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.type-card--selected {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: var(--shadow-md);
}

.type-card__icon {
  font-size: 2.25rem;
  line-height: 1;
}

.type-card__label {
  font-weight: 700;
  font-size: 1rem;
  color: var(--neutral-900);
}

.type-card__desc {
  font-size: .8125rem;
  color: var(--neutral-500);
  line-height: 1.4;
}

/* ── Service grid (Step 2) ────────────────────────────────────────────────── */
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .875rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 400px) {
  .service-grid { grid-template-columns: 1fr; }
}

.service-card {
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  cursor: pointer;
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: .375rem;
  text-align: left;
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.service-card--selected {
  border-color: var(--accent);
  background: var(--accent-light);
}

.service-card--emergency {
  border-color: var(--warn);
}

.service-card__icon { font-size: 1.75rem; line-height: 1; margin-bottom: .25rem; }
.service-card__name { font-weight: 600; font-size: .9375rem; color: var(--neutral-900); }
.service-card__duration { font-size: .8125rem; color: var(--neutral-500); }

/* ── Confirmation card (Step 3) ───────────────────────────────────────────── */
.confirm-card {
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  background: #fff;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.confirm-card__icon { font-size: 2rem; flex-shrink: 0; line-height: 1; margin-top: .125rem; }

.confirm-card__name { font-weight: 700; font-size: 1.0625rem; margin-bottom: .25rem; }
.confirm-card__meta { font-size: .875rem; color: var(--neutral-500); }
.confirm-card__desc { font-size: .875rem; color: var(--neutral-600); margin-top: .5rem; line-height: 1.5; }

/* Emergency warning banner */
.emergency-banner {
  background: var(--warn-light);
  border: 1px solid var(--warn);
  border-radius: var(--radius-md);
  padding: .875rem 1rem;
  font-size: .875rem;
  color: #78350f;
  display: flex;
  align-items: flex-start;
  gap: .625rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.emergency-banner__icon { font-size: 1.125rem; flex-shrink: 0; margin-top: .0625rem; }

/* ── First availability (Step 4) ─────────────────────────────────────────── */
.avail-hero {
  background: linear-gradient(135deg, var(--accent-light) 0%, #fff 100%);
  border: 2px solid var(--accent);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.avail-hero__label {
  font-size: .8125rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: .625rem;
}

.avail-hero__time {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--neutral-900);
  letter-spacing: -.02em;
  margin-bottom: .375rem;
}

.avail-hero__date {
  font-size: 1rem;
  color: var(--neutral-600);
  margin-bottom: 1.25rem;
}

.avail-hero__skeleton {
  height: 1.5rem;
  background: linear-gradient(90deg, var(--neutral-200) 25%, var(--neutral-100) 50%, var(--neutral-200) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: shimmer 1.5s infinite;
  margin: .5rem auto;
  max-width: 220px;
}

@keyframes shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}

/* ── Preference grid (Step 5) ────────────────────────────────────────────── */
.pref-grid {
  display: grid;
  grid-template-columns: auto 1fr 1fr 1fr;
  gap: .5rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.pref-grid__header {
  font-size: .75rem;
  font-weight: 600;
  color: var(--neutral-500);
  text-align: center;
  padding: .375rem .25rem;
  white-space: nowrap;
}

.pref-grid__day-label {
  font-size: .875rem;
  font-weight: 500;
  color: var(--neutral-700);
  padding: .375rem .5rem;
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.pref-chip {
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-sm);
  padding: .5rem .25rem;
  cursor: pointer;
  background: #fff;
  font-size: .75rem;
  color: var(--neutral-600);
  text-align: center;
  transition: border-color var(--transition), background var(--transition);
  min-width: 64px;
  user-select: none;
}

.pref-chip:hover { border-color: var(--accent); }
.pref-chip--selected {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent-dark);
  font-weight: 600;
}

/* ── Slot list (Step 6) ───────────────────────────────────────────────────── */
.slot-list {
  display: flex;
  flex-direction: column;
  gap: .625rem;
  margin-bottom: 1.5rem;
}

.slot-item {
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-md);
  padding: .875rem 1rem;
  cursor: pointer;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.slot-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.slot-item--selected {
  border-color: var(--accent);
  background: var(--accent-light);
}

.slot-item__day  { font-weight: 600; font-size: .9375rem; color: var(--neutral-800); }
.slot-item__date { font-size: .875rem; color: var(--neutral-500); }
.slot-item__time { font-size: 1rem; font-weight: 700; color: var(--accent); }

.show-more-btn {
  background: none;
  border: 1.5px dashed var(--neutral-300);
  border-radius: var(--radius-md);
  padding: .75rem;
  width: 100%;
  cursor: pointer;
  font-size: .875rem;
  color: var(--neutral-500);
  text-align: center;
  transition: border-color var(--transition), color var(--transition);
  margin-bottom: 1.5rem;
}

.show-more-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── Intake form (Step 7) ────────────────────────────────────────────────── */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-bottom: .75rem;
}

@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .375rem;
  margin-bottom: .75rem;
}

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

label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--neutral-700);
}

label .required {
  color: var(--error);
  margin-left: .125rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
  width: 100%;
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  padding: .625rem .75rem;
  font-size: .9375rem;
  font-family: var(--font);
  color: var(--neutral-800);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

/* Validation states */
input.is-valid, select.is-valid { border-color: var(--success); }
input.is-invalid, select.is-invalid { border-color: var(--error); }

input.is-valid:focus, select.is-valid:focus {
  box-shadow: 0 0 0 3px rgba(22, 163, 74, .12);
}

input.is-invalid:focus, select.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, .12);
}

.field-error {
  font-size: .75rem;
  color: var(--error);
  min-height: 1rem;
}

/* DOB row */
.dob-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: .5rem;
}

/* Insurance toggle */
.radio-group {
  display: flex;
  gap: .75rem;
}

.radio-btn {
  flex: 1;
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  padding: .625rem .75rem;
  cursor: pointer;
  text-align: center;
  font-size: .875rem;
  font-weight: 600;
  color: var(--neutral-600);
  background: #fff;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
  user-select: none;
}

.radio-btn:hover { border-color: var(--accent); }
.radio-btn--selected {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent-dark);
}

/* Consent checkbox */
.consent-block {
  background: var(--neutral-50);
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
  margin-top: .25rem;
}

.consent-row {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
}

.consent-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: .1875rem;
  accent-color: var(--accent);
  cursor: pointer;
  border: 1.5px solid var(--neutral-300);
  border-radius: 4px;
}

.consent-row label {
  font-size: .8125rem;
  font-weight: 400;
  color: var(--neutral-700);
  line-height: 1.5;
  cursor: pointer;
}

.consent-row label strong { font-weight: 600; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  padding: .75rem 1.25rem;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition);
  text-decoration: none;
  white-space: nowrap;
  min-height: 48px; /* touch target */
}

.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--accent);
  color: var(--accent-text);
  width: 100%;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover:not(:disabled) {
  background: var(--accent-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn--primary:active:not(:disabled) { transform: translateY(0); }

.btn--primary:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn--secondary {
  background: #fff;
  color: var(--neutral-700);
  border: 1.5px solid var(--neutral-200);
  width: 100%;
}

.btn--secondary:hover:not(:disabled) {
  background: var(--neutral-50);
  border-color: var(--neutral-300);
}

.btn-row {
  display: flex;
  flex-direction: column;
  gap: .625rem;
  margin-top: 1.5rem;
}

@media (min-width: 480px) {
  .btn-row--side-by-side {
    flex-direction: row;
  }
}

/* ── Loading spinner ─────────────────────────────────────────────────────── */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255,255,255,.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .65s linear infinite;
  flex-shrink: 0;
}

.spinner--dark {
  border-color: rgba(37,99,235,.25);
  border-top-color: var(--accent);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Confirmation screen ─────────────────────────────────────────────────── */
.confirm-success {
  text-align: center;
  padding: 2rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.confirm-success__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--success-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.confirm-success__title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--neutral-900);
  letter-spacing: -.02em;
}

.confirm-success__msg {
  font-size: .9375rem;
  color: var(--neutral-600);
  line-height: 1.6;
  max-width: 380px;
}

.confirm-success__detail-card {
  width: 100%;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  background: #fff;
  text-align: left;
  font-size: .875rem;
  color: var(--neutral-700);
  display: flex;
  flex-direction: column;
  gap: .625rem;
  box-shadow: var(--shadow-sm);
}

.confirm-success__detail-row {
  display: flex;
  align-items: flex-start;
  gap: .625rem;
}

.confirm-success__detail-row span:first-child {
  font-size: 1rem;
  flex-shrink: 0;
  line-height: 1.4;
}

.confirm-success__sms-note {
  font-size: .8125rem;
  color: var(--neutral-500);
  display: flex;
  align-items: center;
  gap: .375rem;
}

/* ── Error / alert states ────────────────────────────────────────────────── */
.alert {
  border-radius: var(--radius-md);
  padding: .875rem 1rem;
  font-size: .875rem;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: .625rem;
  margin-bottom: 1rem;
}

.alert--error { background: var(--error-light); color: #7f1d1d; border: 1px solid #fca5a5; }
.alert--warn  { background: var(--warn-light);  color: #78350f; border: 1px solid #fcd34d; }
.alert__icon  { font-size: 1rem; flex-shrink: 0; margin-top: .0625rem; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
.booking-footer {
  background: var(--neutral-100);
  border-top: 1px solid var(--neutral-200);
  padding: .875rem 1.5rem;
  text-align: center;
  font-size: .75rem;
  color: var(--neutral-500);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.booking-footer a { color: var(--neutral-500); text-decoration: none; }
.booking-footer a:hover { text-decoration: underline; }
.footer-trust { display: flex; align-items: center; gap: .25rem; }

/* ── Utility classes ──────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.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;
}

/* Focus ring visible for keyboard users */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* Smooth scrolling */
html { scroll-behavior: smooth; }

/* Chatbot handoff link */
.chatbot-link {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  font-size: .875rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  margin-top: .25rem;
}

.chatbot-link:hover { text-decoration: underline; }