/* ==========================================================================
   BizSim — Animations CSS
   Micro-Interactions, Transitions & Motion System
   ========================================================================== */

/* ==========================================================================
   1. ENTRANCE ANIMATIONS — KEYFRAMES
   ========================================================================== */

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

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

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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


/* ==========================================================================
   2. ENTRANCE ANIMATION CLASSES
   ========================================================================== */

.fade-in-up {
  animation: fadeInUp 0.4s ease forwards;
  opacity: 0;
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
  opacity: 0;
}

.slide-in-right {
  animation: slideInRight 0.35s ease forwards;
  opacity: 0;
}

.slide-in-left {
  animation: slideInLeft 0.35s ease forwards;
  opacity: 0;
}

.scale-in {
  animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  opacity: 0;
}

.slide-in-down {
  animation: slideInDown 0.3s ease forwards;
  opacity: 0;
}


/* ==========================================================================
   3. STAGGER DELAYS
   ========================================================================== */

.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.10s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.20s; }
.stagger-5 { animation-delay: 0.25s; }
.stagger-6 { animation-delay: 0.30s; }
.stagger-7 { animation-delay: 0.35s; }
.stagger-8 { animation-delay: 0.40s; }


/* ==========================================================================
   4. SCORE RING DRAW ANIMATION
   ========================================================================== */

@keyframes drawRing {
  from {
    stroke-dashoffset: 251;
  }
  to {
    stroke-dashoffset: var(--ring-offset, 0);
  }
}

.score-ring-fill {
  animation: drawRing 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 0.3s;
}

.score-ring-fill.ring-success { stroke: #acd157; }
.score-ring-fill.ring-warning { stroke: #f1be32; }
.score-ring-fill.ring-danger  { stroke: #ffadad; }


/* ==========================================================================
   5. PULSE — ACTIVE STEP DOT
   ========================================================================== */

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(153, 201, 255, 0.28);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(153, 201, 255, 0);
  }
}

.step-dot.active {
  animation: pulse 2s ease-in-out infinite;
}

.step-dot {
  transition:
    background-color 250ms ease,
    color 250ms ease,
    box-shadow 250ms ease,
    transform 200ms ease;
}

.step-dot.active  { transform: scale(1.1); }
.step-dot.done    { transform: scale(1); }


/* ==========================================================================
   6. BADGE POP
   ========================================================================== */

@keyframes badgePop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  60% {
    transform: scale(1.15);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.badge-pop {
  animation: badgePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* Staggered badge gallery */
.badge-gallery .earned-badge { opacity: 0; }
.badge-gallery .earned-badge:nth-child(1) { animation: badgePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.00s forwards; }
.badge-gallery .earned-badge:nth-child(2) { animation: badgePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.10s forwards; }
.badge-gallery .earned-badge:nth-child(3) { animation: badgePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.20s forwards; }
.badge-gallery .earned-badge:nth-child(4) { animation: badgePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.30s forwards; }


/* ==========================================================================
   7. CONFETTI — CSS-ONLY PARTICLES (10 particles)
   ========================================================================== */

@keyframes confetti-fall {
  0% {
    transform: translateY(-10px) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(60px) rotate(360deg);
    opacity: 0;
  }
}

.confetti-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.confetti-particle {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  animation: confetti-fall 0.8s ease-out forwards;
}

.confetti-particle:nth-child(1)  { background-color: #99c9ff; left: 10%; top: 20%; animation-delay: 0.00s; animation-duration: 0.90s; }
.confetti-particle:nth-child(2)  { background-color: #acd157; left: 20%; top: 10%; animation-delay: 0.08s; animation-duration: 0.75s; width: 6px; height: 6px; }
.confetti-particle:nth-child(3)  { background-color: #f1be32; left: 35%; top: 15%; animation-delay: 0.12s; animation-duration: 1.00s; border-radius: 50%; }
.confetti-particle:nth-child(4)  { background-color: #ffadad; left: 50%; top:  5%; animation-delay: 0.04s; animation-duration: 0.85s; width: 10px; height: 10px; }
.confetti-particle:nth-child(5)  { background-color: #dbb8ff; left: 65%; top: 18%; animation-delay: 0.16s; animation-duration: 0.70s; }
.confetti-particle:nth-child(6)  { background-color: #ffadad; left: 75%; top:  8%; animation-delay: 0.02s; animation-duration: 0.95s; width: 6px; height: 6px; border-radius: 50%; }
.confetti-particle:nth-child(7)  { background-color: #99c9ff; left: 85%; top: 22%; animation-delay: 0.10s; animation-duration: 0.80s; }
.confetti-particle:nth-child(8)  { background-color: #f1be32; left: 42%; top: 28%; animation-delay: 0.20s; animation-duration: 0.65s; width: 10px; height: 4px; }
.confetti-particle:nth-child(9)  { background-color: #acd157; left: 58%; top: 12%; animation-delay: 0.06s; animation-duration: 1.10s; border-radius: 50%; }
.confetti-particle:nth-child(10) { background-color: #dbb8ff; left: 28%; top: 25%; animation-delay: 0.14s; animation-duration: 0.78s; width: 7px; height: 7px; }


/* ==========================================================================
   8. TOAST NOTIFICATION
   ========================================================================== */

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

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

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  min-width: 280px;
  max-width: 380px;
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--color-text);
}

.toast-icon    { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.toast-content { flex: 1; }

.toast-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 2px;
}

.toast-message {
  font-size: 13px;
  color: var(--color-text-muted);
}

.toast-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 16px;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.15s ease;
}

.toast-close:hover { color: var(--color-text); }

.toast-success { border-left: 3px solid var(--color-success); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-danger  { border-left: 3px solid var(--color-danger);  }
.toast-info    { border-left: 3px solid var(--color-primary); }

.toast.entering { animation: slideInToast 0.3s ease forwards; }
.toast.leaving  { animation: slideOutToast 0.3s ease forwards; }

.toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}


/* ==========================================================================
   9. HOVER INTERACTIONS
   ========================================================================== */

.card-interactive {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}

.card-interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-primary);
}

.btn {
  transition: all 0.15s ease;
  will-change: transform;
}

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

.btn-primary:hover:not(:disabled) {
  box-shadow: var(--shadow-glow-primary);
}

.scenario-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}

.motion-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}

.drag-card {
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, opacity 0.2s ease;
}

.drop-zone {
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.interview-option {
  transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.sidebar-nav-item {
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}


/* ==========================================================================
   10. RANGE SLIDER FILL (live color feedback via CSS variable)
   ========================================================================== */

.range-slider {
  --slider-fill: 50%;
  background: linear-gradient(
    to right,
    var(--color-primary) var(--slider-fill),
    var(--color-surface-2) var(--slider-fill)
  );
  transition: background 0.05s ease;
}

input[type=range] {
  --slider-fill: 0%;
  background: linear-gradient(
    to right,
    var(--color-primary) var(--slider-fill),
    var(--color-surface-2) var(--slider-fill)
  );
}

.range-slider:hover::-webkit-slider-thumb {
  box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.25);
}

.range-slider:active::-webkit-slider-thumb {
  transform: scale(1.2);
  box-shadow: 0 0 0 8px rgba(59, 130, 246, 0.2);
}


/* ==========================================================================
   11. SKELETON / LOADING STATE
   ========================================================================== */

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface)   25%,
    var(--color-surface-2) 50%,
    var(--color-surface)   75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
  color: transparent !important;
  pointer-events: none;
  user-select: none;
}

.skeleton-text      { height: 14px; border-radius: var(--radius-full); margin-bottom: 8px; }
.skeleton-text.wide  { width: 80%; }
.skeleton-text.short { width: 40%; }
.skeleton-title     { height: 24px; width: 45%; border-radius: var(--radius-full); margin-bottom: 12px; }
.skeleton-card      { height: 120px; border-radius: var(--radius-lg); }
.skeleton-circle    { border-radius: var(--radius-full) !important; }


/* ==========================================================================
   12. NUMBER COUNTER / SCORE REVEAL
   ========================================================================== */

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.count-reveal {
  animation: countUp 0.5s ease forwards;
}

@keyframes scoreReveal {
  0% {
    opacity: 0;
    transform: scale(0.6) translateY(20px);
    filter: blur(4px);
  }
  60% {
    transform: scale(1.05) translateY(-4px);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
    filter: blur(0);
  }
}

.score-reveal {
  animation: scoreReveal 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  opacity: 0;
}


/* ==========================================================================
   13. MODAL ANIMATIONS
   ========================================================================== */

@keyframes modalOverlayIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalOverlayOut { from { opacity: 1; } to { opacity: 0; } }

@keyframes modalBoxIn {
  from { opacity: 0; transform: scale(0.93) translateY(16px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes modalBoxOut {
  from { opacity: 1; transform: scale(1) translateY(0); }
  to   { opacity: 0; transform: scale(0.95) translateY(8px); }
}

.modal-overlay              { animation: modalOverlayIn  0.2s ease forwards; }
.modal-overlay.closing      { animation: modalOverlayOut 0.2s ease forwards; }
.modal-box                  { animation: modalBoxIn  0.25s cubic-bezier(0.34, 1.2, 0.64, 1) forwards; }
.modal-overlay.closing .modal-box { animation: modalBoxOut 0.2s ease forwards; }
.modal-overlay.active .modal-box  { animation: modalBoxIn 0.25s cubic-bezier(0.4, 0, 0.2, 1) forwards; }


/* ==========================================================================
   14. PROGRESS BAR FILL ANIMATION
   ========================================================================== */

@keyframes progressGrow {
  from { width: 0%; }
  to   { width: var(--progress-target, 100%); }
}

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

.progress-fill.animate {
  animation: progressGrow 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}


/* ==========================================================================
   15. CORRECT / INCORRECT FEEDBACK FLASH
   ========================================================================== */

@keyframes flashCorrect {
  0%   { background-color: transparent; }
  30%  { background-color: rgba(16, 185, 129, 0.25); }
  100% { background-color: var(--color-success-glow); }
}

@keyframes flashIncorrect {
  0%   { background-color: transparent; }
  20%  { background-color: rgba(239, 68, 68, 0.35); }
  50%  { background-color: transparent; }
  70%  { background-color: rgba(239, 68, 68, 0.25); }
  100% { background-color: var(--color-danger-glow); }
}

@keyframes shakeX {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

.flash-correct   { animation: flashCorrect 0.5s ease forwards; }
.flash-incorrect { animation: flashIncorrect 0.5s ease forwards, shakeX 0.4s ease; }


/* ==========================================================================
   16. DRAG & DROP ANIMATIONS
   ========================================================================== */

@keyframes dropSuccess {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.04); }
  100% { transform: scale(1); }
}

@keyframes itemReturn {
  from { opacity: 0.5; transform: scale(0.92); }
  to   { opacity: 1;   transform: scale(1); }
}

.drag-card.drop-success { animation: dropSuccess  0.3s cubic-bezier(0.34, 1.4, 0.64, 1); }
.drag-card.item-return  { animation: itemReturn   0.25s ease forwards; }

.drop-zone.highlight {
  border-color: var(--color-primary);
  background-color: rgba(59, 130, 246, 0.06);
}


/* ==========================================================================
   17. PAGE TRANSITION
   ========================================================================== */

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

.page-wrapper {
  animation: pageEnter 0.35s ease forwards;
}


/* ==========================================================================
   18. BUTTON LOADING STATE
   ========================================================================== */

@keyframes spinCW {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.8;
}

.btn-loading .btn-label { opacity: 0; }

.btn-loading::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spinCW 0.7s linear infinite;
}


/* ==========================================================================
   19. CARD GRID ENTRANCE STAGGER
   ========================================================================== */

.card-grid .card {
  opacity: 0;
  animation: fadeInUp 0.4s ease forwards;
}

.card-grid .card:nth-child(1) { animation-delay: 0.00s; }
.card-grid .card:nth-child(2) { animation-delay: 0.10s; }
.card-grid .card:nth-child(3) { animation-delay: 0.20s; }
.card-grid .card:nth-child(4) { animation-delay: 0.30s; }
.card-grid .card:nth-child(5) { animation-delay: 0.40s; }
.card-grid .card:nth-child(6) { animation-delay: 0.50s; }


/* ==========================================================================
   20. FEEDBACK PANEL SLIDE DOWN
   ========================================================================== */

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); max-height: 0; }
  to   { opacity: 1; transform: translateY(0);     max-height: 600px; }
}

.feedback-panel.visible { animation: slideDown 0.35s ease forwards; }


/* ==========================================================================
   21. VIABILITY RATING REVEAL (Results page)
   ========================================================================== */

@keyframes viabilityIn {
  0%  { opacity: 0; transform: scale(0.5); filter: blur(8px); }
  70% { transform: scale(1.08); filter: blur(0); }
  100%{ opacity: 1; transform: scale(1); }
}

.viability-rating.reveal {
  animation: viabilityIn 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  opacity: 0;
}


/* ==========================================================================
   22. INTERVIEW BUBBLE ENTRANCE
   ========================================================================== */

@keyframes bubbleIn {
  from { opacity: 0; transform: translateX(-12px) scale(0.97); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes bubbleInCustomer {
  from { opacity: 0; transform: translateX(12px) scale(0.97); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

.interview-bubble.interviewer.animate { animation: bubbleIn 0.3s ease forwards; }
.interview-bubble.customer.animate    { animation: bubbleInCustomer 0.3s ease forwards; }

.interview-options.animate .interview-option {
  opacity: 0;
  animation: fadeInUp 0.25s ease forwards;
}

.interview-options.animate .interview-option:nth-child(1) { animation-delay: 0.05s; }
.interview-options.animate .interview-option:nth-child(2) { animation-delay: 0.10s; }
.interview-options.animate .interview-option:nth-child(3) { animation-delay: 0.15s; }
.interview-options.animate .interview-option:nth-child(4) { animation-delay: 0.20s; }


/* ==========================================================================
   23. HOVER GLOW PULSE
   ========================================================================== */

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(59, 130, 246, 0.2); }
  50%       { box-shadow: 0 0 20px rgba(59, 130, 246, 0.45); }
}

.glow-pulse { animation: glowPulse 2.5s ease-in-out infinite; }

.nav-pulse { animation: glowPulse 2s ease-in-out infinite; }
.nav-pulse:hover { animation: none; }


/* ==========================================================================
   24. SCORE RING HOVER EFFECT
   ========================================================================== */

.score-ring-container:hover .score-ring-fill {
  filter: drop-shadow(0 0 6px rgba(59, 130, 246, 0.5));
  transition: filter 0.2s ease;
}


/* ==========================================================================
   25. REDUCE MOTION — ACCESSIBILITY
   ========================================================================== */

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

  .score-ring-fill {
    stroke-dashoffset: var(--ring-offset, 0);
    animation: none;
    transition: none;
  }

  .step-dot.active {
    animation: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
  }

  .skeleton {
    animation: none;
    background: var(--color-surface-2);
  }

  .confetti-particle { display: none; }
  .page-wrapper { animation: none; }
}