:root {
  color-scheme: light;
  font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.4;
}

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

body {
  margin: 0;
  background: radial-gradient(circle at top, rgba(233, 244, 241, 0.6), transparent 50%), #f7f7f7;
  min-height: 100vh;
  color: #0f172a;
}

a {
  color: inherit;
  text-decoration-color: #111;
  text-decoration-thickness: 2px;
}

site-header::part(root),
site-footer::part(root) {
  width: 100%;
}

.signup-shell {
  max-width: 600px;
  margin: 32px auto 140px;
  padding: 0 16px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.signup-card,
.benefits-card {
  background: #fff;
  border-radius: 32px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 25px 50px rgba(15, 23, 42, 0.08);
  padding: 32px;
}

.signup-card {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.card-header {
  text-align: left;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12px;
  font-weight: 700;
  color: #10b981;
  margin-bottom: 4px;
}

#signup-heading {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 36px);
}

.subtitle {
  margin: 0;
  color: #4b5563;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-control {
  position: relative;
  display: flex;
  align-items: center;
}

.field-control input {
  flex: 1;
  padding-right: 48px;
}

.field[data-invalid="true"] input,
.field[data-invalid="true"] select {
  border-color: #b91c1c;
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.12);
}

.toggle-visibility {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  cursor: pointer;
  color: #4b5563;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.toggle-visibility:focus {
  outline: 2px solid rgba(15, 23, 42, 0.2);
}

.toggle-visibility:hover {
  background: rgba(15, 23, 42, 0.04);
  color: #111;
}

.toggle-visibility svg {
  width: 20px;
  height: 20px;
  pointer-events: none;
}

.toggle-visibility [data-icon="hide"] {
  display: none;
}

.toggle-visibility[data-visible="true"] [data-icon="show"] {
  display: none;
}

.toggle-visibility[data-visible="true"] [data-icon="hide"] {
  display: block;
}

.field-label {
  font-weight: 600;
}

.field input,
.field select {
  height: 48px;
  border-radius: 14px;
  border: 1px solid #d1d5db;
  padding: 0 16px;
  font-size: 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field-hint {
  margin: 0;
  font-size: 13px;
  color: #6b7280;
  opacity: 0;
  max-height: 0;
  transition: opacity 0.2s ease;
}

.field:focus-within .field-hint {
  opacity: 1;
  max-height: none;
  margin-top: 4px;
}

.field input:focus,
.field select:focus {
  border-color: #111;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
  outline: none;
}

.checkbox {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: #4b5563;
  line-height: 1.4;
}

.checkbox input {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1px solid #9ca3af;
}

.checkbox-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.checkbox-field[data-invalid="true"] .checkbox span {
  color: #b91c1c;
}

.field-error {
  margin: 2px 0 0;
  font-size: 13px;
  color: #b91c1c;
  min-height: 1em;
  visibility: hidden;
}

.field-error[data-state="error"] {
  visibility: visible;
}

.submit-button {
  border: none;
  border-radius: 16px;
  height: 52px;
  background: #111;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.submit-button[disabled] {
  opacity: 0.6;
  cursor: wait;
}

.submit-button:hover:not([disabled]) {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.signin-copy {
  margin: 0;
  text-align: center;
  color: #6b7280;
}

.form-feedback {
  min-height: 1.2em;
  font-size: 14px;
  text-align: center;
}

.form-feedback[data-state="error"] {
  color: #b91c1c;
}

.form-feedback[data-state="success"] {
  color: #059669;
}

.benefits-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(59, 130, 246, 0.15));
  border-color: transparent;
}

.benefits-card h2 {
  margin-top: 0;
}

.benefits-card ul {
  margin: 16px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.footer-spacer {
  height: 80px;
}

.legal-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.legal-modal[data-open="true"] {
  display: flex;
}

.legal-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(2px);
}

.legal-modal__dialog {
  position: relative;
  background: #fff;
  color: #0f172a;
  width: min(920px, 90vw);
  max-height: 80vh;
  border-radius: 20px;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.2);
  padding: 18px 20px 16px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
  overflow: hidden;
  z-index: 1;
}

.legal-modal__header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.legal-modal__eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 700;
  color: #6b7280;
}

.legal-modal__title {
  margin: 4px 0;
  font-size: 22px;
}

.legal-modal__meta {
  margin: 0;
  font-size: 13px;
  color: #6b7280;
}

.legal-modal__close {
  border: none;
  background: transparent;
  font-size: 26px;
  line-height: 1;
  padding: 6px 10px;
  cursor: pointer;
  color: #4b5563;
  border-radius: 8px;
}

.legal-modal__close:hover {
  background: rgba(15, 23, 42, 0.06);
  color: #111;
}

.legal-modal__body {
  overflow: auto;
  padding-right: 4px;
  padding-bottom: 8px;
}

.legal-modal__body h2,
.legal-modal__body h3,
.legal-modal__body h4 {
  margin-top: 16px;
  margin-bottom: 8px;
}

.legal-modal__body p {
  margin: 0 0 10px;
  color: #1f2937;
}

.legal-modal__body .legal-lede {
  font-weight: 600;
}

.legal-modal__body ul {
  padding-left: 18px;
  margin: 0 0 10px;
}

.legal-modal__body li + li {
  margin-top: 6px;
}

body.legal-modal-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .signup-shell {
    margin-top: 16px;
    padding-bottom: 140px;
  }

  .signup-card,
  .benefits-card {
    padding: 24px;
    border-radius: 24px;
  }

  .checkbox {
    align-items: flex-start;
  }

  .legal-modal__dialog {
    width: 92vw;
    max-height: 82vh;
    padding: 16px;
    border-radius: 16px;
    grid-template-rows: auto minmax(0, 1fr);
  }

  .legal-modal__title {
    font-size: 20px;
  }
}