/* Trial form — в стиле bootcamp (тёмная тема, жёлтый акцент) */
:root {
  --trial-bg: var(--boot-bg-light);
  --trial-accent: var(--boot-accent);
  --trial-border: var(--boot-border);
  --trial-text: var(--boot-text);
  --trial-text-muted: var(--boot-text-muted);
  --trial-radius: 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.trial-form-container {
  max-width: 480px;
  margin: 0 auto;
}

.trial-form {
  background: transparent;
}

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

.form-step.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.form-title {
  font-family: var(--boot-font);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--boot-text);
  text-align: center;
  margin-bottom: 2rem;
  line-height: 1.3;
}

/* Radio options */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--boot-bg);
  border: 1px solid var(--boot-border);
  border-radius: var(--trial-radius);
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.radio-option:hover {
  border-color: rgba(251, 191, 36, 0.5);
}

.radio-option input {
  appearance: none;
  width: 22px;
  height: 22px;
  border: 2px solid var(--boot-border);
  border-radius: 50%;
  flex-shrink: 0;
  cursor: pointer;
  transition: all 0.2s;
}

.radio-option input:checked {
  border-color: var(--boot-accent);
  background: var(--boot-accent);
  box-shadow: inset 0 0 0 4px var(--boot-bg);
}

.radio-option.selected {
  border-color: var(--boot-accent);
  background: var(--boot-accent-soft);
}

.radio-label {
  font-size: 1rem;
  color: var(--boot-text);
  font-family: var(--boot-font);
}

/* Input fields */
.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--boot-text-muted);
  margin-bottom: 0.5rem;
  font-family: var(--boot-font);
}

.input-group input {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--boot-bg);
  border: 1px solid var(--boot-border);
  border-radius: 12px;
  font-family: var(--boot-font);
  font-size: 1rem;
  color: var(--boot-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-group input::placeholder {
  color: var(--boot-text-muted);
}

.input-group input:focus {
  outline: none;
  border-color: var(--boot-accent);
  box-shadow: 0 0 0 3px var(--boot-accent-soft);
}

.input-group input.error {
  border-color: #f43f5e;
}

.input-error {
  display: block;
  font-size: 0.85rem;
  color: #f43f5e;
  margin-top: 0.35rem;
}

/* Slots grid */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.slot-card {
  padding: 1rem;
  background: var(--boot-bg);
  border: 1px solid var(--boot-border);
  border-radius: var(--trial-radius);
  text-align: center;
  cursor: pointer;
  font-family: var(--boot-font);
  touch-action: manipulation;
  transition: all 0.2s;
}

.slot-card:hover {
  border-color: rgba(251, 191, 36, 0.5);
}

.slot-card.selected {
  border-color: var(--boot-accent);
  background: var(--boot-accent-soft);
}

.slot-date {
  font-size: 0.9rem;
  color: var(--boot-text);
  margin-bottom: 0.25rem;
}

.slot-card .slot-date {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--boot-accent);
}

/* Navigation buttons */
.form-nav {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 1.75rem;
  font-family: var(--boot-font);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  touch-action: manipulation;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-back {
  background: var(--boot-bg-lighter);
  color: var(--boot-text);
  border: 1px solid var(--boot-border);
}

.btn-back:hover {
  background: var(--boot-bg);
  border-color: var(--boot-text-muted);
}

.btn-next,
.btn-book {
  background: linear-gradient(135deg, var(--boot-accent) 0%, #f59e0b 100%);
  color: #0a0d12;
  box-shadow: 0 8px 32px rgba(251, 191, 36, 0.35);
}

.btn-next:hover,
.btn-book:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(251, 191, 36, 0.5);
}

.btn-next:disabled,
.btn-book:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Confirmation step */
.form-step-confirm {
  text-align: center;
}

.confirm-logo {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--boot-accent);
}

.confirm-title {
  font-family: var(--boot-font);
  font-size: 1.5rem;
  color: var(--boot-text);
  margin-bottom: 1.5rem;
}

.confirm-message {
  max-width: 400px;
  margin: 0 auto 2rem;
  padding: 1.5rem;
  background: var(--boot-bg);
  border: 1px solid var(--boot-border);
  border-radius: var(--trial-radius);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--boot-text-muted);
  text-align: left;
  white-space: pre-wrap;
}

.confirm-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.btn-ok {
  background: var(--trial-accent);
  color: var(--boot-bg);
  width: 100%;
  max-width: 280px;
  text-align: center;
}

.btn-ok:hover {
  opacity: 0.9;
}

@media (max-width: 480px) {
  .form-title {
    font-size: 1.35rem;
  }

  .slots-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}