:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-card: #0f0f0f;
  --bg-card-hover: #141414;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-normal: rgba(255, 255, 255, 0.12);
  --border-active: rgba(255, 255, 255, 0.25);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.5);
  --text-tertiary: rgba(255, 255, 255, 0.25);
  --accent: #00ff88;
  --accent-dim: rgba(0, 255, 136, 0.15);
  --accent-glow: rgba(0, 255, 136, 0.08);
  --font-display: 'Space Grotesk', 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --gap-xs: 8px;
  --gap-sm: 16px;
  --gap-md: 24px;
  --gap-lg: 48px;
  --gap-xl: 80px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
}

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-decoration: none;
  text-transform: uppercase;
}

.nav-logo span { color: var(--accent); }

.nav-back {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-back:hover { color: var(--accent); }

/* HERO */
.hero {
  padding: 160px 48px 100px;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 48px;
}

.stat { display: flex; flex-direction: column; gap: 4px; }

.stat-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-normal);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: var(--accent);
  color: #000;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.3s ease;
}

.hero-cta:hover {
  background: transparent;
  color: var(--accent);
  outline: 1px solid var(--accent);
}

/* FORM SECTION */
.form-section {
  max-width: 860px;
  margin: 0 auto;
  padding: 80px 48px;
}

/* PROGRESS BAR */
.progress-wrap { margin-bottom: 64px; }

.progress-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 16px;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-normal);
  border: 1px solid var(--border-normal);
  transition: all 0.3s ease;
}

.progress-step.active .step-dot,
.progress-step.completed .step-dot {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.4);
}

.step-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.3s;
}

.progress-step.active .step-label { color: var(--accent); }
.progress-step.completed .step-label { color: var(--text-secondary); }

.progress-line {
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
  margin-bottom: 18px;
}

.progress-bar {
  height: 1px;
  background: var(--border-subtle);
  border-radius: 1px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.4s ease;
  box-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
}

/* FORM STEPS */
.form-step { display: none; }
.form-step.active { display: block; }

.step-header { margin-bottom: 40px; }

.step-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 12px;
}

.step-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

/* FIELDS */
.fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.field-group { display: flex; flex-direction: column; gap: 8px; }
.field-group.full-width { grid-column: 1 / -1; }

label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

input, select, textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  width: 100%;
  appearance: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

input::placeholder, textarea::placeholder {
  color: var(--text-tertiary);
}

select {
  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 d='M1 1l5 5 5-5' stroke='%23ffffff50' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

select option {
  background: #111;
  color: #fff;
}

textarea { resize: vertical; min-height: 100px; }

.field-error {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #ff4466;
  letter-spacing: 0.05em;
  min-height: 14px;
}

.field-status {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  min-height: 14px;
  transition: color 0.2s;
}
.field-status.ws-checking { color: var(--text-tertiary); }
.field-status.ws-valid    { color: var(--accent); }
.field-status.ws-invalid  { color: #ff4466; }

input.error, select.error, textarea.error {
  border-color: #ff4466;
}

/* RADIO CARDS */
.radio-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.radio-card {
  cursor: pointer;
  position: relative;
}

.radio-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-card .card-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
}

.radio-card:hover .card-content {
  border-color: var(--border-normal);
  background: var(--bg-card-hover);
}

.radio-card input:checked + .card-content {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.card-title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-desc {
  font-size: 11px;
  color: var(--text-secondary);
}

/* CHECKBOX GRID */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 13px;
  color: var(--text-secondary);
}

.checkbox-item:hover {
  border-color: var(--border-normal);
  color: var(--text-primary);
}

.checkbox-item input[type="checkbox"] {
  width: 14px;
  height: 14px;
  min-width: 14px;
  accent-color: var(--accent);
  padding: 0;
}

.checkbox-item:has(input:checked) {
  border-color: var(--accent);
  color: var(--text-primary);
  background: var(--accent-dim);
}

/* CHECKBOX CARDS */
.checkbox-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.checkbox-card {
  cursor: pointer;
  position: relative;
}

.checkbox-card input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-card .card-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  height: 100%;
  transition: all 0.2s ease;
}

.checkbox-card:hover .card-content {
  border-color: var(--border-normal);
  background: var(--bg-card-hover);
}

.checkbox-card input:checked + .card-content {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.card-icon {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 4px;
}

/* REVIEW PANEL */
.review-panel {
  margin-top: 48px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: none;
}

.review-panel.visible { display: block; }

.review-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.review-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  margin-top: 8px;
}

.review-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.review-item { display: flex; flex-direction: column; gap: 4px; }
.review-item.full { grid-column: 1 / -1; }

.review-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.review-value {
  font-size: 13px;
  color: var(--text-primary);
}

/* FORM NAV */
.form-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.form-nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.step-counter {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.1em;
}

.btn-prev, .btn-next, .btn-submit {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 12px 28px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  outline: none;
}

.btn-prev {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-normal);
}

.btn-prev:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
}

.btn-next {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-normal);
}

.btn-next:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-submit {
  background: var(--accent);
  color: #000;
}

.btn-submit:hover {
  background: transparent;
  color: var(--accent);
  outline: 1px solid var(--accent);
}

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* FOOTER */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.1em;
}

.footer a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover { color: var(--accent); }

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 120px 24px 60px; }
  .hero-stats { gap: 20px; }
  .form-section { padding: 48px 24px; }
  .fields-grid { grid-template-columns: 1fr; }
  .field-group.full-width { grid-column: 1; }
  .review-grid { grid-template-columns: 1fr; }
  .radio-cards { grid-template-columns: 1fr 1fr; }
  .checkbox-cards { grid-template-columns: 1fr 1fr; }
  .form-nav { flex-direction: column; gap: 16px; align-items: stretch; }
  .form-nav-right { flex-direction: column; align-items: stretch; }
  .btn-next, .btn-submit, .btn-prev { width: 100%; text-align: center; padding: 16px; }
  .footer { padding: 20px 24px; }
}

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