/* ============================================================
   TINYSQUARE STUDIO — COMPONENTS CSS
   Reusable UI components: Buttons, Links, Toast
   ============================================================ */

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border: 2px solid transparent;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

/* Primary Button */
.btn--primary {
  background-color: var(--color-btn-bg);
  color: var(--color-btn-text);
  border-color: var(--color-btn-bg);
}

.btn--primary:hover {
  background-color: var(--color-stroke);
  border-color: var(--color-stroke);
  box-shadow: var(--shadow-md);
}

/* Secondary / Ghost Button */
.btn--ghost {
  background-color: transparent;
  color: var(--color-btn-bg);
  border-color: var(--color-btn-bg);
}

.btn--ghost:hover {
  background-color: var(--color-btn-bg);
  color: var(--color-btn-text);
}

/* Button Icon */
.btn__icon {
  font-size: var(--fs-base);
  line-height: 1;
}

/* ============================================================
   LINK BUTTON (inline text links)
   ============================================================ */
.link-btn {
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

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

/* ============================================================
   ICON LINK (Google Play, App Store)
   ============================================================ */
.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.icon-link:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-sm);
}

.icon-link__img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: block;
  filter: invert(0.8);
}

/* ============================================================
   TOAST NOTIFICATION
   ============================================================ */
.toast {
  position: fixed;
  bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background-color: var(--color-btn-bg);
  color: var(--color-btn-text);
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
  white-space: nowrap;
}

.toast.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   DIVIDER
   ============================================================ */
.divider {
  width: 100%;
  border: none;
  border-top: 1px solid var(--color-stroke);
  opacity: 0.3;
}