/* ==========================================================================
   Button Components
   Primary and secondary button styles
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn:active {
  transform: translateY(0);
}

/* ---- Primary ---- */

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(8, 127, 255, 0.25);
}

/* ---- Secondary (outline) ---- */

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Secondary on dark backgrounds — solid white */
.btn--secondary-light {
  background-color: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

/* Dark-mode button palette */
:root[data-theme="dark"] .btn--primary {
  background-color: #ffffff;
  border-color: #ffffff;
  color: #000000;
}

:root[data-theme="dark"] .btn--secondary-light {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.82);
  color: #f4f8ff;
}

/* ---- Size variants ---- */

.btn--lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
}

.btn--sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover {
    transform: translateY(-1px);
  }

  .btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    box-shadow: 0 6px 20px rgba(8, 127, 255, 0.4);
    transform: translateY(-2px);
  }

  .btn--secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
  }

  .btn--secondary-light:hover {
    background-color: var(--color-grey-border);
    border-color: var(--color-grey-border);
    color: var(--color-black);
  }

  :root[data-theme="dark"] .btn--primary:hover {
    background-color: #eaf1ff;
    border-color: #eaf1ff;
    color: #000000;
  }

  :root[data-theme="dark"] .btn--secondary-light:hover {
    background-color: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.92);
    color: #ffffff;
  }
}