:root {
  --bg: #0b0f0d;
  --bg-panel: #101512;
  --line: #263029;
  --line-bright: #3a4a3e;
  --amber: #c98a3a;
  --green: #7fd88f;
  --text: #d9dedb;
  --text-dim: #7c8981;
  --danger: #d9605a;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100%;
}

body {
  background-image:
    radial-gradient(circle at 15% 0%, rgba(127, 216, 143, 0.05), transparent 40%),
    radial-gradient(circle at 85% 100%, rgba(201, 138, 58, 0.05), transparent 40%);
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.015) 0px,
    rgba(255, 255, 255, 0.015) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

.brief-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 28px;
  margin-bottom: 32px;
}

.brief-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--green);
  margin-bottom: 12px;
}

.brief-tag::before {
  content: '▌';
  margin-right: 8px;
  animation: blink 1.4s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.brief-header h1 {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 12px;
  color: #fff;
  letter-spacing: -0.01em;
}

.brief-sub {
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.6;
  margin: 0;
  max-width: 54ch;
}

.progress-rail {
  height: 2px;
  background: var(--line);
  margin-bottom: 10px;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--green);
  width: 8.33%;
  transition: width 0.35s ease;
}

.step-counter {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 36px;
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.step {
  display: none;
  animation: fadeIn 0.3s ease;
}

.step.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.step h2 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 16px;
  color: #f2f4f2;
}

.step-note {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.65;
  margin: 0 0 18px;
  padding: 12px 14px;
  border-left: 2px solid var(--amber);
  background: rgba(201, 138, 58, 0.06);
}

.field {
  margin-bottom: 14px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 8px;
  text-transform: uppercase;
}

input[type="text"],
textarea {
  width: 100%;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 12px 14px;
  border-radius: 3px;
  resize: vertical;
  line-height: 1.55;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea {
  min-height: 150px;
}

input[type="text"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(127, 216, 143, 0.12);
}

input:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.field.invalid input,
.field.invalid textarea {
  border-color: var(--danger);
}

.nav-row {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 12px 22px;
  border-radius: 3px;
  border: 1px solid var(--line-bright);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

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

.btn-primary {
  background: var(--green);
  color: #0b0f0d;
  border-color: var(--green);
  font-weight: 600;
  margin-left: auto;
}

.btn-primary:hover {
  opacity: 0.88;
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-ghost {
  color: var(--text-dim);
}

.btn-ghost[hidden] { visibility: hidden; }

.form-status {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  min-height: 1.4em;
}

.form-status.success { color: var(--green); }
.form-status.error { color: var(--danger); }
.form-status.pending { color: var(--text-dim); }

@media (max-width: 560px) {
  .wrap { padding: 36px 16px 72px; }
  .brief-header h1 { font-size: 22px; }
  .nav-row { flex-wrap: wrap; }
}