/* ============================================================
   Buttons & Ripple effect
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-family: var(--md-sys-typescale-body-font);
  font-weight: var(--md-sys-typescale-label-weight);
  font-size: var(--md-sys-typescale-label-size);
  letter-spacing: 0.03em;
  border: none;
  border-radius: var(--md-sys-shape-full);
  cursor: pointer;
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-standard),
              box-shadow var(--md-motion-duration-short) var(--md-motion-easing-standard),
              background var(--md-motion-duration-short) var(--md-motion-easing-standard);
  position: relative;
  overflow: hidden;
  min-height: 48px;
}

.btn-primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-elevation-1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--md-elevation-3);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--md-elevation-1);
}

.btn-outline {
  background: transparent;
  color: var(--md-sys-color-primary);
  border: 1.5px solid var(--md-sys-color-outline-variant);
}

.btn-outline:hover {
  background: rgba(134, 210, 230, 0.08);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-2px);
}

.btn-arrow {
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* Ripple effect container */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transform: scale(0);
  animation: ripple-anim var(--md-motion-duration-long) var(--md-motion-easing-decelerate) forwards;
  pointer-events: none;
}

@keyframes ripple-anim {
  to {
    transform: scale(4);
    opacity: 0;
  }
}