:root {
  --bg: #eef2f7;
  --bg-soft: rgba(255, 255, 255, 0.72);
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: #ffffff;
  --text: #172033;
  --muted: #61708a;
  --accent: #204a78;
  --accent-soft: rgba(32, 74, 120, 0.12);
  --accent-strong: #18385c;
  --border: rgba(23, 32, 51, 0.1);
  --border-strong: rgba(32, 74, 120, 0.22);
  --shadow: 0 28px 60px rgba(20, 34, 58, 0.12);
  --success: #1f6a4f;
  --success-soft: rgba(31, 106, 79, 0.12);
  --error: #9c3d3d;
  --error-soft: rgba(156, 61, 61, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --transition: 180ms ease;
}

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

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(32, 74, 120, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(61, 99, 140, 0.1), transparent 24%),
    linear-gradient(180deg, #f4f6fa 0%, #edf2f7 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(32, 74, 120, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 74, 120, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.18), transparent 72%);
}

.page-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 18px;
}

.survey-stage {
  width: min(100%, 760px);
}

.survey-app {
  min-height: 600px;
}

.survey-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-strong) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  padding: 34px;
  animation: card-enter 280ms ease;
}

.survey-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--accent) 0%, #406ea6 100%);
}

.survey-card.is-success::before {
  background: linear-gradient(90deg, var(--success) 0%, #2f8f6d 100%);
}

.hero-header,
.card-header {
  margin-bottom: 28px;
}

.eyebrow-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 18px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.96rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.7);
}

.hero-title,
.card-title {
  margin: 0;
  font-family: "Spectral", Georgia, serif;
  color: #101727;
  letter-spacing: -0.02em;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.06;
  max-width: 14ch;
}

.card-title {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.12;
}

.hero-subtitle,
.card-copy,
.card-note {
  margin: 14px 0 0;
  font-size: 1.08rem;
  line-height: 1.55;
  color: var(--muted);
}

.hero-subtitle {
  max-width: 44rem;
}

.survey-link {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.survey-link:hover,
.survey-link:focus-visible {
  text-decoration: underline;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 30px;
}

.meta-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(246, 249, 252, 0.95), rgba(255, 255, 255, 0.95));
  border: 1px solid var(--border);
}

.meta-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta-value {
  display: block;
  margin-top: 8px;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text);
}

.hero-actions,
.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
}

.hero-note,
.submission-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.45;
}

.primary-button,
.secondary-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  min-height: 54px;
  padding: 0 24px;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition),
    color var(--transition),
    opacity var(--transition);
}

.primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 14px 24px rgba(24, 56, 92, 0.22);
}

.primary-button:hover:not(:disabled),
.primary-button:focus-visible:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 18px 28px rgba(24, 56, 92, 0.28);
}

.secondary-button {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-strong);
}

.secondary-button:hover,
.secondary-button:focus-visible {
  background: var(--accent-soft);
}

.optional-button {
  min-height: 46px;
  padding: 0 18px;
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  box-shadow: none;
}

.progress-block {
  margin-bottom: 26px;
}

.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
  font-size: 0.98rem;
  color: var(--muted);
  font-weight: 600;
}

.progress-track {
  position: relative;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(32, 74, 120, 0.1);
  overflow: hidden;
}

.progress-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent) 0%, #4c78ab 100%);
  transition: width 220ms ease;
}

.question-form {
  display: grid;
  gap: 22px;
}

.field-group {
  margin: 0;
  padding: 0;
  border: 0;
}

.choice-grid,
.scale-grid {
  display: grid;
  gap: 12px;
}

.choice-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.choice-grid.is-single-column {
  grid-template-columns: 1fr;
}

.choice-card,
.scale-card {
  position: relative;
  display: block;
  cursor: pointer;
}

.choice-input,
.scale-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-content,
.scale-content {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 64px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(250, 252, 255, 0.95), rgba(255, 255, 255, 0.96));
  color: var(--text);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition),
    background-color var(--transition);
}

.choice-content {
  justify-content: flex-start;
  text-align: left;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.35;
}

.scale-shell {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(248, 251, 255, 0.95), rgba(255, 255, 255, 0.95));
  border: 1px solid var(--border);
}

.scale-labels {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.scale-grid {
  grid-template-columns: repeat(10, minmax(0, 1fr));
}

.scale-content {
  min-height: 56px;
  font-weight: 700;
}

.choice-card:hover .choice-content,
.choice-card:focus-within .choice-content,
.scale-card:hover .scale-content,
.scale-card:focus-within .scale-content {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.choice-input:focus-visible + .choice-content,
.scale-input:focus-visible + .scale-content {
  outline: 3px solid rgba(64, 110, 166, 0.24);
  outline-offset: 2px;
}

.choice-input:checked + .choice-content,
.scale-input:checked + .scale-content {
  border-color: rgba(32, 74, 120, 0.4);
  background: linear-gradient(180deg, rgba(32, 74, 120, 0.16), rgba(255, 255, 255, 0.98));
  box-shadow: 0 12px 24px rgba(32, 74, 120, 0.1);
}

.field-stack {
  display: grid;
  gap: 14px;
}

.field-block {
  display: grid;
  gap: 8px;
}

.field-label {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
}

.text-input,
.text-area {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.96);
  color: var(--text);
  font: inherit;
  padding: 16px 18px;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.text-input {
  min-height: 58px;
}

.text-area {
  min-height: 160px;
  resize: vertical;
  line-height: 1.55;
}

.text-input::placeholder,
.text-area::placeholder {
  color: #8a96ab;
}

.text-input:hover,
.text-area:hover,
.text-input:focus,
.text-area:focus {
  border-color: rgba(32, 74, 120, 0.35);
  box-shadow: 0 0 0 4px rgba(32, 74, 120, 0.08);
  outline: 0;
}

.textarea-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.94rem;
}

.sentence-counter.is-over {
  color: var(--error);
  font-weight: 700;
}

.message-area {
  display: grid;
  gap: 10px;
  min-height: 52px;
}

.inline-message,
.submit-message {
  margin: 0;
  min-height: 22px;
  font-size: 0.98rem;
  line-height: 1.4;
}

.inline-message {
  color: transparent;
  transition: color var(--transition);
}

.inline-message.is-visible {
  color: var(--error);
}

.submit-message {
  color: var(--muted);
}

.submit-message.is-error {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--error-soft);
  color: var(--error);
}

.success-block {
  display: grid;
  justify-items: start;
  gap: 18px;
}

.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(31, 106, 79, 0.14), rgba(31, 106, 79, 0.06));
  color: var(--success);
  box-shadow: inset 0 0 0 1px rgba(31, 106, 79, 0.15);
}

.success-icon svg {
  width: 36px;
  height: 36px;
}

.success-panel {
  width: 100%;
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 106, 79, 0.18);
  background: var(--success-soft);
}

.success-panel p {
  margin: 0;
  color: var(--success);
  font-weight: 700;
}

.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 {
  margin: 18px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.94rem;
}

.noscript-banner {
  margin: 20px auto;
  max-width: 760px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: #fff4e8;
  border: 1px solid #efcfab;
  color: #875b22;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
}

@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 760px) {
  .survey-card {
    padding: 26px 22px;
    min-height: auto;
  }

  .hero-grid,
  .choice-grid {
    grid-template-columns: 1fr;
  }

  .scale-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .hero-actions,
  .actions,
  .textarea-meta {
    flex-direction: column;
    align-items: stretch;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-note,
  .submission-note {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .page-shell {
    padding: 18px 12px;
  }

  .survey-card {
    padding: 22px 18px;
    border-radius: 22px;
  }

  .scale-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .progress-meta {
    font-size: 0.92rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}