.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 48px;
  padding: 0 var(--sp-5);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--c-action);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 106, 61, 0.35);
}

.btn--primary:hover {
  background: var(--c-action-dark);
  box-shadow: 0 6px 24px rgba(255, 106, 61, 0.4);
}

.btn--brand {
  background: var(--c-brand);
  color: #fff;
  border: none;
}

.btn--brand:hover {
  background: var(--c-brand-dark);
}

.btn--secondary {
  background: transparent;
  border: 1.5px solid rgba(20, 24, 43, 0.32);
  color: var(--c-text);
  box-shadow: 0 2px 10px rgba(20, 24, 43, 0.08);
}

.btn--secondary:hover {
  border-color: var(--c-brand);
  color: var(--c-brand-dark);
  box-shadow: 0 4px 14px rgba(20, 24, 43, 0.12);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--c-text-inverse);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--sm {
  min-height: 40px;
  padding: 0 var(--sp-4);
  font-size: var(--fs-xs);
}

.btn--icon {
  width: 40px;
  min-width: 40px;
  padding: 0;
}

.btn--icon svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  pointer-events: none;
}

.btn--block { width: 100%; }

.btn--disabled {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.field { display: grid; gap: var(--sp-2); }

.field__label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-text-secondary);
}

.field__input {
  width: 100%;
  min-height: 48px;
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background-color: var(--c-surface);
  font-size: 16px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

select.field__input {
  -webkit-appearance: none;
  appearance: none;
  padding-right: calc(var(--sp-4) + 1rem + var(--sp-3));
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--sp-4) center;
  background-size: 1rem 1rem;
  cursor: pointer;
}

select.field__input::-ms-expand {
  display: none;
}

.field__input:focus {
  outline: none;
  border-color: var(--c-brand);
  box-shadow: 0 0 0 3px var(--c-brand-bg);
}

.field__error {
  font-size: var(--fs-xs);
  color: var(--c-danger);
}