/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: clamp(0.8rem, 2vw, 1rem) clamp(1.25rem, 4vw, 1.75rem);
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, #f2d7ff 0%, #b89cff 60%, #f7b9ff 100%);
  color: #1f1a2b;
  box-shadow: var(--glow-soft);
  transition: transform 320ms var(--ease-spring),
    box-shadow 320ms var(--ease-spring), filter 320ms var(--ease-soft);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 20%,
    rgba(255, 255, 255, 0.5) 0%,
    transparent 70%
  );
  mix-blend-mode: screen;
  pointer-events: none;
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: -120% -60%;
  background: linear-gradient(
    120deg,
    transparent 20%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 80%
  );
  transform: translateX(-120%);
  transition: transform 900ms var(--ease-out);
  pointer-events: none;
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: var(--glow-strong);
}

.btn-primary:hover::after {
  transform: translateX(120%);
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.995);
}

.btn-primary .btn-heart {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  animation: heartBeat 2200ms ease-in-out infinite;
  filter: drop-shadow(0 6px 20px rgba(247, 185, 255, 0.45));
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: clamp(0.85rem, 2vw, 0.95rem);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text-secondary);
  box-shadow: var(--glass-shadow);
  transition: transform 280ms var(--ease-spring),
    box-shadow 280ms var(--ease-spring), color 280ms var(--ease-soft);
}

.btn-ghost.small {
  padding: 0.4rem 0.7rem;
  font-size: 0.9rem;
}

.btn-ghost:hover {
  transform: translateY(-1px);
  color: var(--text-primary);
  box-shadow: 0 20px 60px -20px rgba(184, 156, 255, 0.4);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(2.25rem, 2.5vw, 2.5rem);
  height: clamp(2.25rem, 2.5vw, 2.5rem);
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text-secondary);
  box-shadow: var(--glass-shadow);
  transition: transform 280ms var(--ease-spring),
    box-shadow 280ms var(--ease-spring), color 280ms var(--ease-soft),
    background 280ms var(--ease-soft);
  position: relative;
}

.icon-btn:hover {
  transform: translateY(-1px) scale(1.02);
  color: var(--text-primary);
  box-shadow: 0 24px 70px -20px rgba(184, 156, 255, 0.45);
}

.icon-btn:active {
  transform: scale(0.985);
}

.icon-btn.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .icon-btn.active {
  background: rgba(40, 35, 66, 0.92);
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform 900ms var(--ease-out), box-shadow 900ms var(--ease-out),
    border 420ms var(--ease-soft), background 420ms var(--ease-soft);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 0%,
    rgba(255, 255, 255, 0.45) 0%,
    transparent 70%
  );
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.8;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 40px 120px -40px rgba(184, 156, 255, 0.45);
}

/* Settings Bar */
.settings-bar {
  position: fixed;
  top: clamp(0.75rem, 2vw, 1rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.4rem, 2vw, 0.6rem);
  padding: 0.4rem 0.5rem;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  z-index: 30;
  transition: transform 420ms var(--ease-out), opacity 420ms var(--ease-soft);
  opacity: 0.98;
}

.settings-bar.hide {
  transform: translate(-50%, -140%);
  opacity: 0;
  pointer-events: none;
}

/* Cursor */
#cursor-dot,
#cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  border-radius: 999px;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 40;
  mix-blend-mode: screen;
  will-change: transform;
  transition: opacity 320ms var(--ease-soft);
}

#cursor-dot {
  width: var(--cursor-size);
  height: var(--cursor-size);
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 1) 0%,
    rgba(247, 185, 255, 0.9) 60%,
    rgba(184, 156, 255, 0.6) 100%
  );
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.25),
    0 0 40px -10px rgba(247, 185, 255, 0.9);
  opacity: 0;
}

#cursor-ring {
  width: var(--cursor-ring-size);
  height: var(--cursor-ring-size);
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(2px) saturate(140%);
  -webkit-backdrop-filter: blur(2px) saturate(140%);
  box-shadow: 0 0 60px -20px rgba(184, 156, 255, 0.6);
  opacity: 0;
  transition: width 220ms var(--ease-spring), height 220ms var(--ease-spring),
    border 220ms var(--ease-soft), opacity 320ms var(--ease-soft),
    transform 120ms linear;
}

body:hover #cursor-dot,
body:hover #cursor-ring {
  opacity: 1;
}

body.cursor-hidden #cursor-dot,
body.cursor-hidden #cursor-ring {
  opacity: 0 !important;
}

#cursor-ring.hover {
  width: calc(var(--cursor-ring-size) + 10px);
  height: calc(var(--cursor-ring-size) + 10px);
  border-color: rgba(255, 255, 255, 0.8);
}

#cursor-ring.click {
  width: calc(var(--cursor-ring-size) - 6px);
  height: calc(var(--cursor-ring-size) - 6px);
  border-color: rgba(247, 185, 255, 0.95);
}

/* Toast */
.toast {
  position: fixed;
  bottom: clamp(1rem, 3vw, 2rem);
  left: 50%;
  transform: translateX(-50%);
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text-primary);
  box-shadow: 0 30px 80px -30px rgba(184, 156, 255, 0.55);
  font-size: clamp(0.95rem, 2vw, 1rem);
  text-align: center;
  white-space: pre-wrap;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  max-width: min(90vw, 320px);
  line-height: 1.7;
}

.toast.show {
  animation: fadeToast 3200ms ease forwards;
}