:root {
  --bg: #181512;
  --bg-surface: #26221E;
  --bg-elevated: #2F2A25;
  --border: #44403C;
  --border-strong: #615C57;
  --text: #F3F0EA;
  --text-muted: #A9A4A0;
  --text-subtle: #7A7671;
  --primary: #BD8F41;
  --primary-hover: #CEA35F;
  --primary-active: #A47726;
  --on-primary: #181512;
  --accent: #69B4AF;
  --accent-hover: #83C6C1;
  --focus-ring: #69B4AF;
  --danger: #D15D51;
  --success: #639C6F;
  --font-display: "Marcellus", Georgia, serif;
  --font-sans: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "Space Mono", ui-monospace, monospace;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #F3F0EA;
  --bg-surface: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --border: #DDD9D6;
  --border-strong: #C3BFBB;
  --text: #181512;
  --text-muted: #615C57;
  --text-subtle: #7A7671;
  --primary: #9A6D17;
  --primary-hover: #7B5503;
  --primary-active: #583A00;
  --on-primary: #FFF3CA;
  --accent: #286965;
  --accent-hover: #184A47;
  --focus-ring: #388580;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  min-height: 100%;
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(105, 180, 175, 0.14), transparent 28rem),
    linear-gradient(160deg, rgba(189, 143, 65, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px clamp(18px, 4vw, 56px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  color: var(--primary);
  fill: currentColor;
  flex: 0 0 auto;
}

.brand-word {
  font-family: var(--font-display);
  font-size: 1.48rem;
  letter-spacing: 0.15em;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 15px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.shell {
  width: min(980px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 34px 0 70px;
}

.intro-panel,
.form-panel,
.success-panel {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-surface) 94%, transparent);
  border-radius: 8px;
  padding: clamp(24px, 4vw, 48px);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.intro-panel {
  min-height: min(660px, calc(100svh - 150px));
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.review-intro {
  justify-content: flex-start;
}

.review-intro h1 {
  max-width: 13ch;
}

.review-form {
  margin-top: 32px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 8vw, 5.4rem);
  line-height: 1.02;
}

h2 {
  max-width: 18ch;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
}

.intro-copy {
  max-width: 62ch;
  margin: 26px 0 0;
  color: var(--text-muted);
  font-size: 1.08rem;
}

.intro-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
}

.intro-meta span {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 12px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.small-note {
  margin: 18px 0 0;
  color: var(--text-subtle);
  font-size: 0.9rem;
}

.invite-status {
  max-width: 62ch;
  margin: 24px 0 0;
  color: var(--success);
  font-weight: 700;
}

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

.progress-wrap {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.save-state {
  margin: 6px 0 0;
  color: var(--text-subtle);
  font-size: 0.86rem;
  white-space: nowrap;
}

.progress-track {
  height: 8px;
  margin: 26px 0 22px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--border);
}

#progressBar {
  height: 100%;
  width: 14%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 220ms ease;
}

.step-helper {
  max-width: 68ch;
  margin: 0 0 28px;
  color: var(--text-muted);
}

.field {
  margin: 0 0 22px;
}

.field label,
.field legend {
  display: block;
  margin: 0 0 8px;
  color: var(--text);
  font-weight: 600;
}

.required {
  color: var(--primary);
}

.field-help {
  margin: -2px 0 10px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 12px 13px;
  background: var(--bg-elevated);
  color: var(--text);
}

textarea {
  min-height: 112px;
  resize: vertical;
}

fieldset {
  border: 0;
  padding: 0;
  margin: 0;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.choice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-height: 46px;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 11px 12px;
  color: var(--text-muted);
  background: var(--bg-elevated);
}

.choice input {
  margin-top: 4px;
  accent-color: var(--primary);
}

.choice:has(input:checked) {
  border-color: var(--primary);
  color: var(--text);
}

.checkbox-line {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 13px;
  background: var(--bg-elevated);
  color: var(--text-muted);
}

.checkbox-line input {
  margin-top: 4px;
  accent-color: var(--primary);
}

.error {
  margin: 7px 0 0;
  color: var(--danger);
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 700;
  align-self: flex-start;
}

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

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

.btn-primary:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.btn-secondary {
  border-color: var(--border-strong);
  background: transparent;
  color: var(--text);
}

.form-status {
  min-height: 24px;
  margin-top: 12px;
  color: var(--text-muted);
}

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

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

.review-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  background: var(--bg-elevated);
}

.review-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.review-head h3 {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
}

.edit-link {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 11px;
  background: transparent;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
}

.answer-list {
  display: grid;
  grid-template-columns: minmax(140px, 0.35fr) 1fr;
  gap: 8px 18px;
  margin: 0;
}

.answer-list dt {
  color: var(--text-subtle);
  font-size: 0.88rem;
}

.answer-list dd {
  margin: 0;
  color: var(--text);
  overflow-wrap: anywhere;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.success-panel {
  min-height: 440px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.success-panel p {
  max-width: 58ch;
  color: var(--text-muted);
}

.honeypot,
.is-hidden {
  display: none !important;
}

@media (max-width: 720px) {
  .site-header {
    padding: 16px;
  }

  .brand-word {
    font-size: 1.1rem;
  }

  .theme-toggle span:last-child {
    display: none;
  }

  .shell {
    width: auto;
    max-width: none;
    margin: 0 16px;
    padding-top: 14px;
  }

  .intro-panel,
  .form-panel,
  .success-panel {
    width: 100%;
    max-width: 100%;
    padding: 22px 16px;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(1.95rem, 8.8vw, 2.2rem);
    overflow-wrap: break-word;
  }

  .intro-copy {
    max-width: 100%;
    font-size: 1rem;
    overflow-wrap: break-word;
  }

  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="url"],
  textarea,
  .choice,
  .checkbox-line {
    max-width: 100%;
  }

  .intro-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .intro-meta span {
    max-width: 100%;
  }

  .intro-panel > .btn {
    width: 100%;
    align-self: stretch;
  }

  .progress-wrap,
  .button-row,
  .review-head {
    align-items: stretch;
    flex-direction: column;
  }

  .save-state {
    white-space: normal;
  }

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