/* =========================================
   Animations & Motion
   Premium Dark Trading Design System
   ========================================= */

/* ============================================
   Keyframes
   ============================================ */

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(100%); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

/* Subtle accent glow — for hero elements */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 16px rgba(79, 172, 254, 0.18),
                0 0 40px rgba(79, 172, 254, 0.08);
  }
  50% {
    box-shadow: 0 0 24px rgba(79, 172, 254, 0.28),
                0 0 64px rgba(79, 172, 254, 0.12);
  }
}

/* Soft float for decorative elements */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}

/* Breathing scale for loading indicators */
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50%       { transform: scale(1.05); opacity: 1; }
}

/* Toast entrance — slides from right with spring */
@keyframes toastIn {
  from { opacity: 0; transform: translateX(24px) scale(0.96); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(24px) scale(0.96); }
}

/* Modal scale-in */
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Drawer slide-in */
@keyframes drawerIn {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

/* Progress bar fill */
@keyframes progressFill {
  from { width: 0%; }
}

/* Ring draw */
@keyframes ringDraw {
  from { stroke-dashoffset: var(--ring-circumference, 283); }
  to   { stroke-dashoffset: var(--ring-offset, 0); }
}

/* ============================================
   Page Transition
   ============================================ */

.page-enter {
  animation: fadeInUp var(--duration-slower) var(--ease-out) forwards;
}

/* ============================================
   Staggered Entrance
   ============================================ */

.stagger > * {
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
}

.stagger > *:nth-child(1)  { animation-delay: 0ms; }
.stagger > *:nth-child(2)  { animation-delay: 60ms; }
.stagger > *:nth-child(3)  { animation-delay: 120ms; }
.stagger > *:nth-child(4)  { animation-delay: 180ms; }
.stagger > *:nth-child(5)  { animation-delay: 240ms; }
.stagger > *:nth-child(6)  { animation-delay: 300ms; }
.stagger > *:nth-child(7)  { animation-delay: 360ms; }
.stagger > *:nth-child(8)  { animation-delay: 420ms; }
.stagger > *:nth-child(9)  { animation-delay: 480ms; }
.stagger > *:nth-child(10) { animation-delay: 540ms; }
.stagger > *:nth-child(n+11) { animation-delay: 600ms; }

/* ============================================
   Card Entrance
   ============================================ */

.card-enter {
  opacity: 0;
  transform: translateY(12px);
  animation: cardEnter var(--duration-slow) var(--ease-out) forwards;
}

@keyframes cardEnter {
  to { opacity: 1; transform: translateY(0); }
}

/* Staggered card grid — each card delays by its position */
.card-stagger > * {
  opacity: 0;
  animation: cardEnter var(--duration-slow) var(--ease-out) forwards;
}
.card-stagger > *:nth-child(1)  { animation-delay: 0ms; }
.card-stagger > *:nth-child(2)  { animation-delay: 70ms; }
.card-stagger > *:nth-child(3)  { animation-delay: 140ms; }
.card-stagger > *:nth-child(4)  { animation-delay: 210ms; }
.card-stagger > *:nth-child(5)  { animation-delay: 280ms; }
.card-stagger > *:nth-child(6)  { animation-delay: 350ms; }
.card-stagger > *:nth-child(7)  { animation-delay: 420ms; }
.card-stagger > *:nth-child(8)  { animation-delay: 490ms; }
.card-stagger > *:nth-child(n+9) { animation-delay: 560ms; }

/* ============================================
   Hover Transitions
   ============================================ */

.hover-lift {
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Glow lift — for CTAs and accent elements */
.hover-glow {
  transition:
    transform var(--duration-base) var(--ease-spring),
    box-shadow var(--duration-base) var(--ease-soft);
}

.hover-glow:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-accent), var(--shadow-md);
}

/* ============================================
   Ambient / Decorative
   ============================================ */

.glow-pulse {
  animation: glow 3s ease-in-out infinite;
}

.float-anim {
  animation: float 6s ease-in-out infinite;
}

.breathe-anim {
  animation: breathe 3s ease-in-out infinite;
}

/* ============================================
   Skeleton loading shimmer
   ============================================ */

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(120, 145, 190, 0.05) 25%,
    rgba(120, 145, 190, 0.1) 50%,
    rgba(120, 145, 190, 0.05) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  border-radius: var(--radius-sm);
}

/* ============================================
   Reduced Motion Override
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .stagger > *,
  .card-enter,
  .card-stagger > *,
  .page-enter {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hover-lift:hover,
  .hover-glow:hover {
    transform: none;
  }

  .glow-pulse,
  .float-anim,
  .breathe-anim {
    animation: none;
  }

  .skeleton {
    animation: none;
    background: rgba(120, 145, 190, 0.08);
  }
}

/* ============================================
   Button Press Effect
   ============================================ */

.btn {
  transition:
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-soft),
    opacity var(--duration-fast) var(--ease-soft);
}

.btn:active:not(:disabled) {
  transform: scale(0.97) translateY(1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   Card Hover Lift
   ============================================ */

.card {
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    border-color var(--duration-fast) var(--ease-soft);
}

.card:not(.no-hover):hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(79, 172, 254, 0.12);
}

/* ============================================
   Input Focus Glow
   ============================================ */

.form-input:focus,
.form-select:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.15), 0 0 0 1px rgba(79, 172, 254, 0.3);
  border-color: rgba(79, 172, 254, 0.5);
}

/* ============================================
   Chart Canvas Entrance
   ============================================ */

canvas {
  animation: fadeInScale var(--duration-slow) var(--ease-out) forwards;
}

@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.98); }
  to   { opacity: 1; transform: scale(1); }
}

/* ============================================
   Sidebar Nav Item Hover
   ============================================ */

.nav-item {
  transition:
    background var(--duration-fast) var(--ease-soft),
    color var(--duration-fast) var(--ease-soft),
    transform var(--duration-fast) var(--ease-out);
}

.nav-item:hover:not(.active) {
  background: rgba(255, 255, 255, 0.04);
  transform: translateX(2px);
}

.nav-item.active {
  transition:
    background var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

/* ============================================
   Scroll-reveal for data rows
   ============================================ */

.data-table tbody tr {
  transition:
    background var(--duration-fast) var(--ease-soft),
    transform var(--duration-fast) var(--ease-out);
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
  transform: translateX(2px);
}

@media (prefers-reduced-motion: reduce) {
  .btn:active:not(:disabled) { transform: none; }
  .card:not(.no-hover):hover { transform: none; box-shadow: none; }
  .nav-item:hover:not(.active) { transform: none; }
  .data-table tbody tr:hover { transform: none; }
  canvas { animation: none; }
}