/* === Brief Form Styles === */

.brief-main {
  padding-top: 100px;
  padding-bottom: var(--spacing-2xl);
  min-height: 100vh;
}

.brief-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.brief-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.brief-header p {
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

.required-marker {
  color: #e74c3c;
  font-weight: 700;
}

/* === Progress Bar === */

.progress-bar {
  margin-bottom: var(--spacing-lg);
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.25rem;
}

.progress-step {
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0.5rem 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.progress-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.progress-step.active span,
.progress-step.done span {
  background: var(--color-secondary);
  color: #fff;
}

.progress-step.active {
  color: var(--color-primary);
}

.progress-step.done {
  color: var(--color-secondary);
}

.progress-track {
  height: 4px;
  background: var(--color-surface);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-secondary);
  border-radius: 2px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  width: 20%;
}

/* === Form Steps === */

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

.form-step.active {
  display: block;
  animation: fadeInStep 0.3s ease;
}

@keyframes fadeInStep {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-surface);
}

.step-title-sub {
  margin-top: var(--spacing-lg);
  font-size: 1.15rem;
}

/* === Fields === */

.field {
  margin-bottom: 1.25rem;
}

.field label {
  display: block;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.field label small {
  font-weight: 400;
  color: var(--color-text-secondary);
}

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="url"],
.field input[type="number"],
.field input[type="date"],
.field textarea,
.field select {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1.5px solid #dfe6e9;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(0, 184, 148, 0.12);
}

.field input.invalid,
.field textarea.invalid {
  border-color: #e74c3c;
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.field .error-text {
  color: #e74c3c;
  font-size: 0.82rem;
  margin-top: 0.3rem;
  display: block;
}

.field textarea {
  resize: vertical;
  min-height: 60px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.char-count {
  display: block;
  text-align: right;
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.note {
  display: block;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  margin-top: 0.3rem;
  font-style: italic;
}

/* === Radio & Checkbox Groups === */

.radio-group,
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.radio-label,
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border: 1.5px solid #dfe6e9;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text);
  transition: all var(--transition-fast);
  background: #fff;
}

.radio-label:hover,
.checkbox-label:hover {
  border-color: var(--color-secondary);
  background: rgba(0, 184, 148, 0.03);
}

.radio-label:has(input:checked),
.checkbox-label:has(input:checked) {
  border-color: var(--color-secondary);
  background: rgba(0, 184, 148, 0.06);
  color: var(--color-primary);
  font-weight: 600;
}

.radio-label input,
.checkbox-label input {
  accent-color: var(--color-secondary);
}

.terms-checkboxes {
  flex-direction: column;
}

.terms-checkboxes .checkbox-label {
  align-items: flex-start;
  padding: 0.75rem 1rem;
}

/* === Conditional Fields === */

.conditional {
  display: none;
}

.conditional.visible {
  display: block;
  animation: fadeInStep 0.2s ease;
}

/* === Warning / Info Boxes === */

.warning-box {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  color: #856404;
  margin-bottom: 1.25rem;
}

.info-box {
  background: #e8f8f5;
  border: 1px solid var(--color-secondary);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

/* === Form Navigation === */

.form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-surface);
}

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

.btn-submit {
  min-width: 180px;
}

/* === Review Summary === */

.review-intro {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.review-summary {
  display: grid;
  gap: 1rem;
}

.review-section {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.review-section h3 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.review-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.review-row:last-child {
  border-bottom: none;
}

.review-label {
  color: var(--color-text-secondary);
  flex-shrink: 0;
  margin-right: 1rem;
}

.review-value {
  color: var(--color-text);
  font-weight: 600;
  text-align: right;
  word-break: break-word;
}

.review-value.empty {
  color: #b2bec3;
  font-weight: 400;
  font-style: italic;
}

/* === Form Messages === */

.form-message {
  margin-top: var(--spacing-md);
  padding: 1.25rem;
  border-radius: var(--radius);
  text-align: center;
}

.form-error {
  background: #ffeaea;
  border: 1px solid #e74c3c;
  color: #c0392b;
}

.form-success {
  background: #e8f8f5;
  border: 1px solid var(--color-secondary);
}

.form-success h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.form-success p {
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

/* === Responsive === */

@media (max-width: 768px) {
  .progress-step {
    font-size: 0;
  }

  .progress-step span {
    font-size: 0.75rem;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .radio-group,
  .checkbox-group {
    flex-direction: column;
  }

  .form-nav {
    gap: 0.75rem;
  }
}