/**
 * UX Refinements
 * ==============
 * Enhanced user experience improvements including:
 * - Cross-browser scrollbar support
 * - Input focus states and feedback
 * - Skeleton loading states
 * - Micro-interactions
 * - Touch feedback enhancements
 */

/* ========================================
 * CROSS-BROWSER SCROLLBAR SUPPORT
 * ======================================== */

/* Firefox scrollbar support */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb-color) var(--scrollbar-track-color);
}

/* Webkit scrollbar (Chrome, Safari, Edge) */
::-webkit-scrollbar {
  width: var(--scrollbar-width);
  height: var(--scrollbar-width);
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track-color);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb-color);
  border-radius: var(--scrollbar-thumb-radius);
  border: 2px solid var(--scrollbar-track-color);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover-color);
}

/* Thin scrollbar variant */
.scrollbar-thin {
  scrollbar-width: thin;
}

.scrollbar-thin::-webkit-scrollbar {
  width: var(--scrollbar-width-thin);
  height: var(--scrollbar-width-thin);
}

/* Hidden scrollbar (still scrollable) */
.scrollbar-hidden {
  scrollbar-width: none;
}

.scrollbar-hidden::-webkit-scrollbar {
  display: none;
}

/* ========================================
 * INPUT FOCUS STATES & FEEDBACK
 * ======================================== */

/* Enhanced input focus */
.input-field:focus,
.terminal-input:focus,
input[type="text"]:focus,
input[type="search"]:focus,
textarea:focus {
  box-shadow: var(--interaction-glow-focus);
  border-color: var(--color-accent-primary);
}

/* Input container with focus-within */
.input-line:focus-within,
.input-area:focus-within {
  background: var(--color-bg-tertiary);
}

.input-line:focus-within .input-prompt {
  color: var(--color-accent-primary);
}

/* Typing indicator animation */
.input-field:not(:placeholder-shown)::after,
.typing-indicator {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--color-accent-primary);
  animation: cursor-blink 1s step-end infinite;
  margin-left: 2px;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Input placeholder enhancement */
.input-field::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.input-field:focus::placeholder,
input:focus::placeholder,
textarea:focus::placeholder {
  opacity: 0.5;
}

/* Input validation states */
.input-field.input--valid,
input.input--valid {
  border-color: var(--color-accent-secondary);
  box-shadow: var(--interaction-glow-success);
}

.input-field.input--invalid,
input.input--invalid {
  border-color: var(--color-accent-error);
  box-shadow: var(--interaction-glow-error);
}

/* Input loading state */
.input-field.input--loading,
input.input--loading {
  background-image: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-bg-tertiary) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: input-loading 1.5s ease-in-out infinite;
}

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

/* ========================================
 * SKELETON LOADING STATES
 * ======================================== */

.skeleton {
  background: var(--skeleton-base-color);
  background-image: linear-gradient(
    90deg,
    var(--skeleton-base-color) 0%,
    var(--skeleton-shine-color) 50%,
    var(--skeleton-base-color) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer var(--skeleton-animation-duration) ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

/* Skeleton variants */
.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text:last-child {
  width: 70%;
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: 1em;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.skeleton-button {
  height: 36px;
  width: 100px;
}

.skeleton-card {
  padding: var(--space-4);
  border: 1px solid var(--color-border-default);
}

/* Skeleton for narrative entries */
.skeleton-narrative-entry {
  padding: var(--space-3);
  margin-bottom: var(--space-3);
  border-left: 2px solid var(--color-bg-tertiary);
}

.skeleton-narrative-entry .skeleton-text:first-child {
  width: 30%;
  margin-bottom: var(--space-2);
}

/* Skeleton for panels */
.skeleton-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
}

.skeleton-panel-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.skeleton-panel-header .skeleton-avatar {
  flex-shrink: 0;
}

.skeleton-panel-header .skeleton-text {
  flex: 1;
  margin-bottom: 0;
}

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

/* Button hover lift effect */
.btn,
button:not(.no-interaction),
[role="button"] {
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.btn:hover:not(:disabled),
button:hover:not(:disabled):not(.no-interaction),
[role="button"]:hover:not([aria-disabled="true"]) {
  transform: translateY(-1px);
}

.btn:active:not(:disabled),
button:active:not(:disabled):not(.no-interaction),
[role="button"]:active:not([aria-disabled="true"]) {
  transform: translateY(0) scale(var(--interaction-scale-active));
}

/* Card/panel hover effect */
.split-panel,
.card,
.panel-card {
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.split-panel:hover,
.card:hover,
.panel-card:hover {
  border-color: var(--color-border-focus);
}

/* Clickable item hover effect */
.clickable,
.cs-skill--clickable,
.cs-ability-item.rollable,
.cs-save-item.rollable {
  transition:
    background-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.clickable:hover,
.cs-skill--clickable:hover,
.cs-ability-item.rollable:hover,
.cs-save-item.rollable:hover {
  transform: translateX(2px);
}

/* Icon rotation on hover */
.icon-rotate-hover:hover {
  transform: rotate(15deg);
}

.icon-rotate-hover {
  transition: transform var(--transition-fast);
}

/* Subtle pulse for attention */
.pulse-attention {
  animation: pulse-attention 2s ease-in-out infinite;
}

@keyframes pulse-attention {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(97, 175, 239, 0.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(97, 175, 239, 0);
  }
}

/* Success flash animation */
.flash-success {
  animation: flash-success 0.6s ease-out;
}

@keyframes flash-success {
  0% {
    background-color: var(--color-accent-secondary);
    box-shadow: 0 0 20px var(--color-accent-secondary);
  }
  100% {
    background-color: transparent;
    box-shadow: none;
  }
}

/* Error shake animation */
.shake-error {
  animation: shake-error 0.5s ease-in-out;
}

@keyframes shake-error {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* Fade in animation */
.fade-in {
  animation: fade-in var(--transition-normal) ease-out;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Slide in from right */
.slide-in-right {
  animation: slide-in-right var(--transition-normal) ease-out;
}

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

/* Slide in from bottom */
.slide-in-bottom {
  animation: slide-in-bottom var(--transition-normal) ease-out;
}

@keyframes slide-in-bottom {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scale in animation */
.scale-in {
  animation: scale-in var(--transition-fast) ease-out;
}

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

/* ========================================
 * ENHANCED TOUCH FEEDBACK
 * ======================================== */

@media (hover: none) and (pointer: coarse) {
  /* Ripple effect for touch */
  .touch-ripple {
    position: relative;
    overflow: hidden;
  }

  .touch-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s, opacity 0.3s;
    opacity: 0;
    pointer-events: none;
  }

  .touch-ripple:active::after {
    width: 200%;
    height: 200%;
    opacity: 1;
    transition: width 0s, height 0s, opacity 0s;
  }

  /* Enhanced active state for buttons */
  .btn:active,
  button:active,
  [role="button"]:active {
    transform: scale(0.96);
    opacity: 0.9;
  }

  /* Long press indicator */
  .long-press-indicator {
    position: relative;
  }

  .long-press-indicator::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid var(--color-accent-primary);
    border-radius: inherit;
    opacity: 0;
    animation: long-press-ring 0.5s ease-out forwards;
    animation-play-state: paused;
  }

  .long-press-indicator:active::before {
    animation-play-state: running;
  }

  @keyframes long-press-ring {
    0% {
      opacity: 0;
      transform: scale(1);
    }
    50% {
      opacity: 1;
    }
    100% {
      opacity: 0;
      transform: scale(1.1);
    }
  }
}

/* ========================================
 * SWIPE GESTURE HINTS
 * ======================================== */

.swipe-hint {
  position: relative;
}

.swipe-hint::after {
  content: '';
  position: absolute;
  top: 50%;
  right: var(--space-2);
  width: 20px;
  height: 2px;
  background: var(--color-text-muted);
  transform: translateY(-50%);
  opacity: 0;
  animation: swipe-hint 2s ease-in-out infinite;
  animation-delay: 2s;
}

@keyframes swipe-hint {
  0%, 100% {
    opacity: 0;
    transform: translateY(-50%) translateX(0);
  }
  20%, 80% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.5;
    transform: translateY(-50%) translateX(-10px);
  }
}

/* ========================================
 * LOADING STATES
 * ======================================== */

/* Spinner loading */
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-bg-tertiary);
  border-top-color: var(--color-accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-spinner--small {
  width: 14px;
  height: 14px;
  border-width: 1.5px;
}

.loading-spinner--large {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

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

/* Dots loading */
.loading-dots {
  display: flex;
  gap: 4px;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  background: var(--color-accent-primary);
  border-radius: 50%;
  animation: loading-dot 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes loading-dot {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Typing indicator (3 dots) */
.typing-indicator-dots {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.typing-indicator-dots span {
  width: 8px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: 50%;
  animation: typing-bounce 1.4s ease-in-out infinite;
}

.typing-indicator-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing-bounce {
  0%, 60%, 100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-4px);
  }
}

/* ========================================
 * PROGRESS INDICATORS
 * ======================================== */

/* Progress bar */
.progress-bar {
  height: 4px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-accent-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress-bar--animated .progress-bar__fill {
  background: linear-gradient(
    90deg,
    var(--color-accent-primary) 0%,
    var(--color-accent-secondary) 50%,
    var(--color-accent-primary) 100%
  );
  background-size: 200% 100%;
  animation: progress-shimmer 2s linear infinite;
}

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

/* Indeterminate progress */
.progress-bar--indeterminate .progress-bar__fill {
  width: 30%;
  animation: progress-indeterminate 1.5s ease-in-out infinite;
}

@keyframes progress-indeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ========================================
 * REDUCED MOTION SUPPORT
 * ======================================== */

@media (prefers-reduced-motion: reduce) {
  .skeleton,
  .input--loading,
  .loading-spinner,
  .loading-dots span,
  .typing-indicator-dots span,
  .progress-bar--animated .progress-bar__fill,
  .progress-bar--indeterminate .progress-bar__fill,
  .pulse-attention,
  .swipe-hint::after {
    animation: none;
  }

  .fade-in,
  .slide-in-right,
  .slide-in-bottom,
  .scale-in,
  .flash-success,
  .shake-error {
    animation: none;
  }

  .btn:hover,
  .clickable:hover {
    transform: none;
  }
}