.brief-page {
  padding: clamp(40px, 6vw, 80px) clamp(20px, 5vw, 64px) 80px;
  max-width: 1180px;
  margin: 0 auto;
}

.brief-shell {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: flex-start;
}

@media (max-width: 900px) {
  .brief-shell { grid-template-columns: 1fr; }
}

.brief-side {
  position: sticky;
  top: 100px;
  align-self: flex-start;
}

.brief-side h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-top: 14px;
  margin-bottom: 14px;
}

.brief-side .lede {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.brief-promises {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  gap: 10px;
}

.brief-promises li {
  color: var(--text-dim);
  padding-left: 22px;
  position: relative;
}

.brief-promises li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

.brief-promises strong { color: var(--text); }

.brief-progress {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.brief-progress-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
  margin-bottom: 10px;
}

.brief-progress-bar span {
  display: block;
  height: 100%;
  width: 25%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  transition: width 0.3s ease;
}

.brief-progress-text {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.brief-help {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 0;
}

.brief-help a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.brief-form {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(24px, 4vw, 40px);
}

.brief-step {
  border: none;
  padding: 0;
  margin: 0;
  display: none;
}

.brief-step.is-active { display: block; }

.brief-step legend {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding: 0;
  letter-spacing: -0.01em;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.field > label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="url"],
.field textarea {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  padding: 12px 14px;
  border-radius: 10px;
  width: 100%;
  resize: vertical;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--ring);
}

.field input.has-error,
.field textarea.has-error {
  border-color: var(--danger, #ef6b6b);
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* Chip-style radio/checkbox grids */
.chip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}

.chip-grid label {
  position: relative;
  cursor: pointer;
}

.chip-grid input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.chip-grid label > span {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text-dim);
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  text-align: center;
  transition: all 0.12s ease;
}

.chip-grid label:hover > span {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text);
}

.chip-grid input:checked + span {
  border-color: var(--accent);
  background: rgba(255, 184, 107, 0.08);
  color: var(--text);
  box-shadow: 0 0 0 2px var(--ring);
}

.chip-grid-large label > span {
  text-align: left;
  padding: 16px;
  display: grid;
  gap: 4px;
}

.chip-grid-large label > span strong {
  color: var(--text);
  font-weight: 600;
  font-size: 1rem;
}

.chip-grid-large label > span small {
  color: var(--muted);
  font-size: 0.85rem;
}

.brief-nav {
  display: flex;
  gap: 10px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.brief-nav button {
  flex: 1;
}

.brief-nav .btn-primary {
  flex: 2;
}

/* Success state */
.brief-success {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(40px, 6vw, 64px);
  text-align: center;
  grid-column: 1 / -1;
}

.success-mark {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #1b0f06;
  font-size: 2rem;
  font-weight: 700;
}

.brief-success h2 {
  margin-bottom: 12px;
}

.brief-success p {
  color: var(--text-dim);
  max-width: 50ch;
  margin: 0 auto 28px;
}

.brief-success .hero-cta {
  justify-content: center;
}