/* ==========================================================================
   THEME TRANSITIONS & ENHANCEMENTS
   ========================================================================== */

/* Smooth color transitions when theme changes */
body.theme-transitioning,
body.theme-transitioning *,
body.theme-transitioning *::before,
body.theme-transitioning *::after {
  transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease, fill 200ms ease !important;
}

/* Category Color Accents */
.cat-calculators-bg { background: rgba(99, 102, 241, 0.12); color: var(--cat-calculators); }
.cat-finance-bg     { background: rgba(16, 185, 129, 0.12); color: var(--cat-finance); }
.cat-health-bg      { background: rgba(236, 72, 153, 0.12); color: var(--cat-health); }
.cat-datetime-bg    { background: rgba(245, 158, 11, 0.12); color: var(--cat-datetime); }
.cat-converters-bg  { background: rgba(6, 182, 212, 0.12); color: var(--cat-converters); }
.cat-other-bg       { background: rgba(139, 92, 246, 0.12); color: var(--cat-other); }

/* Settings Form Elements */
.settings-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.settings-row:last-child {
  border-bottom: none;
}

.settings-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.settings-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.settings-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

input:checked + .toggle-slider {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

input:checked + .toggle-slider:before {
  transform: translateX(20px);
  background-color: #ffffff;
}

/* ==========================================================================
   3D SPATIAL CANVAS & INTERACTIVE PARALLAX TILT
   ========================================================================== */
.calqio-3d-ambient-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
  opacity: 0.85;
  transition: opacity 0.3s ease;
}

/* 3D Perspective Context for Cards & Interactive Elements */
.tilt-3d-element {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.15s cubic-bezier(0.2, 0, 0.2, 1), box-shadow 0.2s ease, border-color 0.2s ease;
}

/* Holographic Specular Light Glare */
.tilt-glare-layer {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.25s ease;
  mix-blend-mode: overlay;
}

[data-theme="dark"] .tilt-glare-layer {
  mix-blend-mode: screen;
}

/* 3D Floating Geometry Badges */
@keyframes float3D {
  0% {
    transform: translateY(0px) rotateX(0deg) rotateY(0deg);
  }
  50% {
    transform: translateY(-8px) rotateX(4deg) rotateY(-4deg);
  }
  100% {
    transform: translateY(0px) rotateX(0deg) rotateY(0deg);
  }
}

.floating-3d-badge {
  display: inline-block;
  animation: float3D 6s ease-in-out infinite;
  transform-style: preserve-3d;
}

/* 3D Elevated Keypad Buttons */
.keypad-btn.tilt-3d-element:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 14px -2px rgba(15, 23, 42, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .keypad-btn.tilt-3d-element:hover {
  box-shadow: 0 6px 16px -2px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   ULTRA-SMOOTH MICRO-ANIMATIONS & INTERACTION REFINEMENTS
   ========================================================================== */

/* 1. Silky Page and Route Entrance Animation */
@keyframes smoothPageEntrance {
  0% {
    opacity: 0;
    transform: translateY(10px) scale(0.995);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.main-container {
  animation: smoothPageEntrance 320ms cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
  will-change: opacity, transform;
}

/* 2. Staggered Grid Card Reveal */
@keyframes cardFloatUp {
  0% {
    opacity: 0;
    transform: translateY(16px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.domain-cards-grid > *,
.platform-stats-grid > *,
.disciplines-chips-grid > *,
.calculators-grid > * {
  animation: cardFloatUp 380ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.domain-cards-grid > *:nth-child(1) { animation-delay: 40ms; }
.domain-cards-grid > *:nth-child(2) { animation-delay: 80ms; }
.domain-cards-grid > *:nth-child(3) { animation-delay: 120ms; }
.domain-cards-grid > *:nth-child(4) { animation-delay: 160ms; }
.domain-cards-grid > *:nth-child(5) { animation-delay: 200ms; }
.domain-cards-grid > *:nth-child(6) { animation-delay: 240ms; }

.platform-stats-grid > *:nth-child(1) { animation-delay: 30ms; }
.platform-stats-grid > *:nth-child(2) { animation-delay: 60ms; }
.platform-stats-grid > *:nth-child(3) { animation-delay: 90ms; }
.platform-stats-grid > *:nth-child(4) { animation-delay: 120ms; }

/* 3. Luminous Shimmer Light Sweep on Featured Elements */
@keyframes lightShimmerSweep {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.featured-calculator-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    115deg,
    transparent 0%,
    rgba(255, 255, 255, 0.03) 40%,
    rgba(255, 255, 255, 0.12) 50%,
    rgba(255, 255, 255, 0.03) 60%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: lightShimmerSweep 7s infinite linear;
  pointer-events: none;
  border-radius: inherit;
}

/* 4. Calculator Result Value Glow Pulse on Change */
@keyframes resultValuePop {
  0% {
    transform: scale(0.96);
    filter: brightness(1.2);
  }
  50% {
    transform: scale(1.02);
  }
  100% {
    transform: scale(1);
    filter: brightness(1);
  }
}

.result-main-value.value-updated,
.pro-sci-res.value-updated,
.basic-main-value.value-updated {
  animation: resultValuePop 250ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 5. Smooth Button Micro-Bounces */
.btn {
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 180ms cubic-bezier(0.16, 1, 0.3, 1), background-color 150ms ease, border-color 150ms ease !important;
}

.btn:hover {
  transform: translateY(-1.5px);
}

.btn:active {
  transform: translateY(0.5px) scale(0.98);
}

/* 6. Glowing Focus Rings on Input Fields */
input[type="number"],
input[type="text"],
select {
  transition: border-color 200ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 200ms cubic-bezier(0.16, 1, 0.3, 1), background-color 200ms ease;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  transform: translateY(-0.5px);
}

/* 7. Respect Accessibility / Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   ELEGANT DARK MODE REFINEMENTS FOR TOP & SIDE NAVBAR
   ========================================================================== */
[data-theme="dark"] .app-header {
  background: rgba(10, 15, 33, 0.88);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 4px 24px -2px rgba(0, 0, 0, 0.5), inset 0 -1px 0 0 rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .nav-quick-links {
  background: rgba(15, 22, 48, 0.8);
  border-color: rgba(255, 255, 255, 0.09);
}

[data-theme="dark"] .sidebar-toggle-btn {
  background: rgba(20, 30, 65, 0.7);
  border-color: rgba(255, 255, 255, 0.09);
  color: #94A3B8;
}

[data-theme="dark"] .sidebar-toggle-btn:hover {
  background: rgba(34, 211, 238, 0.15);
  border-color: rgba(34, 211, 238, 0.35);
  color: #22D3EE;
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
}

[data-theme="dark"] .header-search-btn {
  background: rgba(14, 21, 46, 0.9);
  border-color: rgba(255, 255, 255, 0.1);
  color: #94A3B8;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .header-search-btn:hover {
  background: rgba(18, 27, 60, 0.95);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.15), inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .app-sidebar {
  background: rgba(10, 15, 33, 0.95);
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 4px 0 24px -4px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .nav-link {
  color: #94A3B8;
}

[data-theme="dark"] .nav-link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #F8FAFC;
}

[data-theme="dark"] .nav-link.active {
  background: rgba(34, 211, 238, 0.12);
  color: #22D3EE;
  border-color: rgba(34, 211, 238, 0.25);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.15);
}

[data-theme="dark"] .category-header:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .category-items {
  border-left-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .nav-sublink {
  color: #94A3B8;
}

[data-theme="dark"] .nav-sublink:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #F8FAFC;
}

[data-theme="dark"] .nav-sublink.active {
  background: rgba(34, 211, 238, 0.14);
  color: #22D3EE;
  border-color: rgba(34, 211, 238, 0.3);
}

[data-theme="dark"] .sidebar-footer {
  background: rgba(8, 12, 26, 0.98);
  border-top-color: rgba(255, 255, 255, 0.07);
}

[data-theme="dark"] .sidebar-status-card {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.06) 0%, rgba(52, 211, 153, 0.06) 100%);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .sidebar-status-card:hover {
  border-color: rgba(34, 211, 238, 0.3);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.12);
}

[data-theme="dark"] .mobile-bottom-nav {
  background: rgba(10, 15, 33, 0.92);
  border-top-color: rgba(255, 255, 255, 0.07);
}