*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --purple: #42145f;
  --purple-dark: #3a124f;
  --purple-focus: #5c2d91;
  --text: #333333;
  --text-muted: #666666;
  --border: #333333;
  --border-light: #cccccc;
  --bg-page: #ffffff;
  --bg-section: #f3f3f7;
  --info-border: #1a1a1a;
  --white: #ffffff;
  --error: #c0392b;
  --success: #2e7d32;
  --radius: 8px;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--purple);
}

img {
  max-width: 100%;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  background: var(--purple);
  color: var(--white);
  padding: 1rem 1.25rem 1.75rem;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--white);
}

.brand-logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-cancel {
  display: inline-block;
  padding: 0.45rem 1.1rem;
  border: 1.5px solid var(--white);
  border-radius: 999px;
  background: transparent;
  color: var(--white);
  font: inherit;
  font-size: 0.9375rem;
  cursor: pointer;
  text-decoration: none;
}

.page-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.15;
}

.page-intro {
  margin: 0;
  font-size: 1rem;
  line-height: 1.45;
  max-width: 40rem;
}

/* Progress */
.progress-bar {
  display: flex;
  gap: 0.35rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-section);
}

.progress-step {
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: var(--border-light);
}

.progress-step.is-active,
.progress-step.is-complete {
  background: var(--purple);
}

/* Main content */
.main-content {
  flex: 1;
  padding-bottom: 2rem;
}

.form-section {
  padding: 1.5rem 1.25rem;
}

.form-section.is-muted {
  background: var(--bg-section);
}

.section-heading {
  margin: 0 0 0.35rem;
  font-size: 1.125rem;
  font-weight: 700;
}

.section-intro {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.optional-badge {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--text-muted);
}

.field {
  margin-bottom: 1.25rem;
}

.field:last-child {
  margin-bottom: 0;
}

.field label,
.field .field-label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1rem;
  font-weight: 400;
}

.field-hint {
  margin: -0.15rem 0 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.field-hint u {
  text-decoration: underline;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="password"],
.field input[type="number"],
.field select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font: inherit;
  font-size: 1rem;
  background: var(--white);
  color: var(--text);
  appearance: none;
}

.field input::placeholder {
  color: #999999;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--purple-focus);
  box-shadow: 0 0 0 1px var(--purple-focus);
}

.field input.is-invalid {
  border-color: var(--error);
}

.dob-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 0.75rem;
}

.dob-row label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.mobile-row {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0;
}

.mobile-row select {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-right: none;
  padding-right: 0.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2342145f' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}

.mobile-row input {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.card-expiry-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.info-box {
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
  margin-bottom: 1.25rem;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--info-border);
  border-radius: var(--radius);
}

.info-icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--info-border);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  font-style: italic;
  font-family: var(--font-serif);
}

.info-box p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.45;
}

.link-expand {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.link-expand::before {
  content: "+";
  font-size: 1.125rem;
  line-height: 1;
}

.form-error {
  display: none;
  margin: 0 1.25rem 1rem;
  padding: 0.75rem 1rem;
  background: #fdecea;
  border: 1px solid #f5c6cb;
  border-radius: var(--radius);
  color: var(--error);
  font-size: 0.9375rem;
}

.form-error.is-visible {
  display: block;
}

.form-actions {
  padding: 1.5rem 1.25rem 0;
}

.btn-primary {
  display: block;
  width: 100%;
  max-width: 24rem;
  margin: 0 auto;
  padding: 0.95rem 1.5rem;
  border: none;
  border-radius: 999px;
  background: var(--purple);
  color: var(--white);
  font: inherit;
  font-size: 1.0625rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--purple-dark);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Confirmation page */
.confirmation-wrap {
  padding: 2.5rem 1.25rem;
  text-align: center;
}

.confirmation-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  background: #e8f5e9;
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}

.confirmation-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--purple);
}

.confirmation-message {
  margin: 0 auto;
  max-width: 28rem;
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--text);
}

.confirmation-status {
  margin-top: 1.5rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.confirmation-status.is-error {
  color: var(--error);
}

/* Footer */
.site-footer {
  padding: 1.5rem 1.25rem 2rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-copy {
  margin: 0;
}

.chat-fab {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 3rem;
  height: 3rem;
  border: none;
  border-radius: 50%;
  background: var(--purple);
  color: var(--white);
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(66, 20, 95, 0.35);
}

@media (min-width: 768px) {
  .site-header,
  .form-section,
  .form-actions,
  .confirmation-wrap,
  .progress-bar,
  .form-error {
    padding-left: max(1.25rem, calc((100% - 42rem) / 2));
    padding-right: max(1.25rem, calc((100% - 42rem) / 2));
  }

  .form-error {
    margin-left: auto;
    margin-right: auto;
    max-width: 42rem;
  }
}