/**
 * Button Components
 * Based on locked design specification
 */

/* === BASE BUTTON === */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  line-height: var(--leading-relaxed);
  letter-spacing: 0.01em;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-base);
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus {
  outline: 2px solid var(--color-salmon);
  outline-offset: 2px;
}

/* === PRIMARY BUTTON === */

.btn-primary {
  background-color: var(--color-salmon);
  color: var(--color-black);
  padding: 10px 24px;
}

.btn-primary:hover {
  background-color: var(--color-salmon-light);
  color: var(--color-black);
  text-decoration: none;
}

.btn-primary:active {
  background-color: var(--color-salmon-medium);
}

.btn-primary:disabled {
  background-color: var(--color-gray-200);
  color: var(--color-gray-600);
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-primary:disabled:active {
  transform: none;
}

/* === SECONDARY BUTTON === */

.btn-secondary {
  background-color: transparent;
  color: var(--color-black);
  padding: 8px 22px; /* 2px less to account for border */
  border: 2px solid var(--color-black);
}

.btn-secondary:hover {
  border-color: var(--color-salmon);
  color: var(--color-black);
  text-decoration: none;
}

.btn-secondary:active {
  border-color: var(--color-salmon-medium);
}

.btn-secondary:disabled {
  border-color: var(--color-gray-300);
  color: var(--color-gray-600);
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-secondary:disabled:active {
  transform: none;
}

/* === BUTTON SIZES === */

.btn-large {
  font-size: var(--text-base);
  padding: 12px 32px;
}

.btn-secondary.btn-large {
  padding: 10px 30px; /* Account for border */
}

.btn-small {
  font-size: var(--text-sm);
  padding: 6px 16px;
}

.btn-secondary.btn-small {
  padding: 4px 14px; /* Account for border */
}

/* === BUTTON GROUPS === */

.btn-group {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.btn-group-vertical {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: stretch;
}

.btn-group .btn,
.btn-group-vertical .btn {
  flex: 0 0 auto;
}

/* Center button groups */
.btn-group-center {
  justify-content: center;
}

.btn-group-vertical.btn-group-center {
  align-items: center;
}

/* Mobile: Always stack buttons vertically */
@media (max-width: 768px) {
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}

/* === BUTTON AS LINK === */

.btn-link {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-black);
  text-decoration: underline;
  font-weight: var(--weight-normal);
}

.btn-link:hover {
  color: var(--color-salmon);
}

.btn-link:focus {
  outline: 2px solid var(--color-salmon);
  outline-offset: 2px;
  border-radius: 2px;
}