:root {
  --primary: #1a73e8;
  --primary-dark: #1565d8;
  --bg: #dce4f5;
  --card-bg: #ffffff;
  --text: #1f1f1f;
  --text-secondary: #5f6368;
  --border: #c4c9d9;
  --error: #d93025;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(60, 64, 67, .25), 0 2px 6px 2px rgba(60, 64, 67, .12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Roboto', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

.page {
  max-width: 640px;
  margin: 12px auto 64px;
  padding: 0 12px;
}

/* Banner image */
.banner {
  border-radius: var(--radius);
  overflow: hidden;
  line-height: 0;
  background: linear-gradient(135deg, #d2e3fc 0%, #e8f0fe 50%, #d2e3fc 100%);
  margin-bottom: 12px;
}

.banner svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card--header {
  border-top: none;
}

.card__accent {
  height: 10px;
  background: var(--primary);
}

.card__body {
  padding: 24px 24px 20px;
}

.form-title {
  font-size: 32px;
  font-weight: 400;
  margin: 0 0 16px;
  line-height: 1.25;
  color: #1f1f1f;
}

.card--header p {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 14px;
}

.card--header p strong {
  font-weight: 500;
}

.signin-note {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 16px;
}

.signin-note a { color: var(--primary); text-decoration: none; }
.signin-note a:hover { text-decoration: underline; }

.divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 20px 0 12px;
}

.required-note {
  color: var(--error);
  font-size: 12px;
  margin: 0;
}

.req { color: var(--error); }

/* Questions */
.q-title {
  font-size: 16px;
  font-weight: 400;
  margin: 0 0 16px;
  line-height: 1.4;
}

/* Text inputs */
.text-input {
  width: 100%;
  max-width: 50%;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  transition: border-color .2s;
}

.text-input::placeholder { color: #9aa0a6; }

.text-input:focus {
  outline: none;
  border-bottom: 2px solid var(--primary);
  margin-bottom: -1px;
}

.text-input--inline {
  max-width: 200px;
  margin-left: 8px;
  padding: 4px 0;
}

.textarea {
  max-width: 100%;
  resize: vertical;
}

/* Options */
.options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  cursor: pointer;
  font-size: 14px;
}

.option input { display: none; }

.box, .radio {
  width: 18px;
  height: 18px;
  border: 2px solid var(--text-secondary);
  flex-shrink: 0;
  transition: all .15s;
  position: relative;
}

.box { border-radius: 2px; }
.radio { border-radius: 50%; }

.option input:checked + .box {
  background: var(--primary);
  border-color: var(--primary);
}

.option input:checked + .box::after {
  content: '';
  position: absolute;
  left: 5px; top: 1px;
  width: 4px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.option input:checked + .radio {
  border-color: var(--primary);
}

.option input:checked + .radio::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--primary);
}

/* Error state */
.error-msg {
  display: none;
  color: var(--error);
  font-size: 12px;
  margin: 12px 0 0;
}

.question.invalid .error-msg { display: block; }
.question.invalid { border-color: var(--error); }

/* Buttons */
.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}

.btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  padding: 10px 24px;
  transition: background .2s, box-shadow .2s;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(26, 115, 232, .3);
}

.btn--primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 2px 6px rgba(26, 115, 232, .4);
}

.btn--text {
  background: transparent;
  color: var(--primary);
}

.btn--text:hover { background: rgba(26, 115, 232, .08); }

/* Footer */
.page-footer {
  margin-top: 32px;
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
}

.footer-warning {
  margin: 0 0 12px;
  text-align: left;
}

.footer-legal {
  margin: 0 0 8px;
}

.footer-legal a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-legal a:hover { text-decoration: underline; }

.footer-brand {
  display: block;
  margin-top: 24px;
  font-size: 28px;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: .5px;
}

.footer-brand b { font-weight: 500; }

.link { color: var(--primary); text-decoration: none; }
.link:hover { text-decoration: underline; }

/* Success page */
.page--success .card { border-radius: var(--radius); }

/* Sign-in overlay */
.signin-overlay {
  position: fixed;
  inset: 0;
  background: rgba(32, 33, 36, .5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.signin-card {
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0,0,0,.2);
  max-width: 308px;
  width: 100%;
  padding: 18px 20px;
  margin-bottom: 10vh;
}

.signin-card h2 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--text);
  line-height: 1.4;
}

.signin-card p {
  font-size: 14px;
  color: var(--text);
  margin: 0 0 16px;
  line-height: 1.6;
}

.signin-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.signin-link {
  color: var(--primary);
  font-size: 14px;
  text-decoration: underline;
}

.signin-link:hover {
  text-decoration: none;
}

.signin-btn {
  align-self: flex-end;
  background: transparent;
  color: var(--primary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 2px;
  padding: 4px 8px;
  margin: 0;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: .25px;
  transition: background .2s;
  line-height: 1.2;
}

.signin-btn:hover {
  background: rgba(26, 115, 232, .08);
}

@media (max-width: 520px) {
  .page { margin-top: 8px; padding: 0 8px; }
  .card__body { padding: 20px 16px 16px; }
  .form-title { font-size: 24px; }
  .text-input { max-width: 100%; }
  .signin-card { padding: 24px; }
  .signin-card h2 { font-size: 20px; }
}