/* ==============================================
   POLISH & REFINEMENTS
   Phase 10: Smooth Animations & Transitions
   ============================================== */

/* ==============================================
   SMOOTH SCROLL BEHAVIOR
   ============================================== */

html {
  scroll-behavior: smooth;
}

/* Disable for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* ==============================================
   REFINED BUTTON ANIMATIONS
   ============================================== */

.btn {
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Ripple effect on click */
.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* Smooth hover elevation */
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Button loading shimmer */
@keyframes button-shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.btn-loading {
  background: linear-gradient(
    90deg,
    var(--blue) 0%,
    rgba(77, 163, 255, 0.8) 50%,
    var(--blue) 100%
  );
  background-size: 1000px 100%;
  animation: button-shimmer 2s infinite;
}

/* ==============================================
   REFINED CARD ANIMATIONS
   ============================================== */

.card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* Card entry animation */
@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: card-enter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Stagger card animations */
.card:nth-child(1) { animation-delay: 0s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }
.card:nth-child(5) { animation-delay: 0.4s; }

/* ==============================================
   SMOOTH INPUT TRANSITIONS
   ============================================== */

input,
select,
textarea,
.form-input {
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

input:focus,
select:focus,
textarea:focus,
.form-input:focus {
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(77, 163, 255, 0.1);
}

/* Label float animation */
.form-field {
  position: relative;
}

.form-field label {
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-field input:focus + label,
.form-field input:not(:placeholder-shown) + label {
  transform: translateY(-24px) scale(0.85);
  color: var(--blue);
}

/* ==============================================
   TOAST ANIMATIONS (ENHANCED)
   ============================================== */

/* Smooth slide in from right */
@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

/* Smooth slide out to right */
@keyframes toast-slide-out {
  from {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
  }
}

.toast {
  animation: toast-slide-in 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.removing {
  animation: toast-slide-out 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   MODAL ANIMATIONS (ENHANCED)
   ============================================== */

/* Smooth backdrop fade */
@keyframes modal-backdrop-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes modal-backdrop-fade-out {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* Modal zoom and fade */
@keyframes modal-zoom-in {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes modal-zoom-out {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
  }
}

.modal-overlay {
  animation: modal-backdrop-fade-in 0.25s ease;
}

.modal-overlay.closing {
  animation: modal-backdrop-fade-out 0.25s ease;
}

.modal {
  animation: modal-zoom-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.closing {
  animation: modal-zoom-out 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   LOADING ANIMATIONS (REFINED)
   ============================================== */

/* Smooth pulse for loading states */
@keyframes pulse-smooth {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.skeleton,
.chart-skeleton > * {
  animation: pulse-smooth 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Spinner with smooth rotation */
@keyframes spinner-smooth {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.spinner,
.loading-spinner,
.btn-loading::after {
  animation: spinner-smooth 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* Progress bar animation */
@keyframes progress-fill {
  from {
    width: 0;
  }
  to {
    width: var(--progress-width);
  }
}

.progress-bar {
  animation: progress-fill 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   CHART ANIMATIONS
   ============================================== */

/* Chart fade in */
@keyframes chart-fade-in {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

#chart-area canvas {
  animation: chart-fade-in 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Chart tab transitions */
.chart-tab {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chart-tab:hover {
  transform: translateY(-2px);
}

.chart-tab.active {
  transform: translateY(-3px);
}

/* ==============================================
   PAGE TRANSITION ANIMATIONS
   ============================================== */

/* Fade in page content */
@keyframes page-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

main {
  animation: page-fade-in 0.4s ease;
}

/* Section slide in */
@keyframes section-slide-in {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

section {
  animation: section-slide-in 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   NAVIGATION ANIMATIONS
   ============================================== */

/* Navigation link hover effect */
.nav-link {
  position: relative;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--blue);
  transform: translateX(-50%);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after {
  width: 80%;
}

/* Brand hover effect */
.brand {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.brand:hover {
  transform: scale(1.05);
}

/* ==============================================
   TABLE ANIMATIONS
   ============================================== */

/* Row hover effect */
tbody tr {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

tbody tr:hover {
  transform: translateX(4px);
  box-shadow: -4px 0 0 var(--blue);
}

/* Table fade in */
@keyframes table-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

table {
  animation: table-fade-in 0.4s ease;
}

/* Row stagger animation */
tbody tr {
  animation: table-fade-in 0.3s ease;
}

tbody tr:nth-child(1) { animation-delay: 0s; }
tbody tr:nth-child(2) { animation-delay: 0.05s; }
tbody tr:nth-child(3) { animation-delay: 0.1s; }
tbody tr:nth-child(4) { animation-delay: 0.15s; }
tbody tr:nth-child(5) { animation-delay: 0.2s; }

/* ==============================================
   LINK HOVER EFFECTS
   ============================================== */

a {
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
  color: var(--blue-light);
}

/* Underline animation */
a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:not(.btn):hover::after {
  width: 100%;
}

/* ==============================================
   TOGGLE SWITCH ANIMATION
   ============================================== */

.switch-slider {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.switch-slider::before {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.switch input:checked + .switch-slider {
  background: var(--blue);
  box-shadow: 0 0 12px rgba(77, 163, 255, 0.4);
}

.switch input:checked + .switch-slider::before {
  transform: translateX(22px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* ==============================================
   ICON ANIMATIONS
   ============================================== */

/* Icon pulse on hover */
@keyframes icon-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.btn:hover i,
a:hover i {
  animation: icon-pulse 0.6s ease;
}

/* Icon spin */
@keyframes icon-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.icon-spin {
  animation: icon-spin 1s linear infinite;
}

/* ==============================================
   BADGE ANIMATIONS
   ============================================== */

.badge {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.badge:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Badge bounce in */
@keyframes badge-bounce-in {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.badge {
  animation: badge-bounce-in 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   THEME TRANSITION
   ============================================== */

/* Smooth theme switching */
body.theme-transitioning,
body.theme-transitioning * {
  transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* ==============================================
   MICRO-INTERACTIONS
   ============================================== */

/* Button press effect */
.btn:active {
  transform: scale(0.98);
}

/* Input focus glow */
@keyframes input-glow {
  0%, 100% {
    box-shadow: 0 0 0 4px rgba(77, 163, 255, 0.1);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(77, 163, 255, 0.15);
  }
}

input:focus,
select:focus,
textarea:focus {
  animation: input-glow 2s ease infinite;
}

/* Success checkmark animation */
@keyframes checkmark-draw {
  0% {
    stroke-dashoffset: 100;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

.checkmark {
  stroke-dasharray: 100;
  animation: checkmark-draw 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   ERROR SHAKE ANIMATION
   ============================================== */

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-10px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(10px);
  }
}

.error,
input[aria-invalid="true"],
.shake {
  animation: shake 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   BACKDROP BLUR EFFECTS
   ============================================== */

.backdrop-blur {
  backdrop-filter: blur(8px);
  transition: backdrop-filter 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.backdrop-blur:hover {
  backdrop-filter: blur(12px);
}

/* ==============================================
   GRADIENT TEXT ANIMATIONS
   ============================================== */

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.gradient-text {
  background: linear-gradient(
    45deg,
    var(--blue),
    var(--purple),
    var(--blue)
  );
  background-size: 200% 200%;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 3s ease infinite;
}

/* ==============================================
   DISABLE ANIMATIONS FOR REDUCED MOTION
   ============================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* Keep essential transitions but make them instant */
  .btn:hover,
  .card:hover,
  a:hover {
    transform: none !important;
  }

  /* Remove all animations */
  @keyframes none {
    0%, 100% { opacity: 1; }
  }
}

/* ==============================================
   PERFORMANCE OPTIMIZATIONS
   ============================================== */

/* GPU acceleration for transforms */
.btn,
.card,
.modal,
.toast {
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Contain layout shifts */
.card,
.btn {
  contain: layout style;
}