/* components/icon/icon.css */

/**
 * Icon System Component
 * Unified SVG icon system with lucide-react icons
 * Full WCAG 2.2 AAA compliance
 */

/* ========================================
   CSS Custom Properties
   ======================================== */

:root {
  /* Icon sizes */
  --icon-size-xs: 0.75rem;   /* 12px */
  --icon-size-s: 1rem;        /* 16px */
  --icon-size-m: 1.25rem;     /* 20px - default */
  --icon-size-l: 1.5rem;      /* 24px */
  --icon-size-xl: 2rem;       /* 32px */
  --icon-size-2xl: 2.5rem;    /* 40px */
  --icon-size-3xl: 3rem;      /* 48px */
  
  /* Icon colors */
  --icon-color-default: currentColor;
  --icon-color-primary: var(--ds-color-primary);
  --icon-color-secondary: var(--ds-color-secondary);
  --icon-color-success: var(--ds-color-success);
  --icon-color-warning: var(--ds-color-warning);
  --icon-color-error: var(--ds-color-danger);
  --icon-color-info: var(--ds-color-info);
  --icon-color-neutral: var(--ds-color-text-weak);
  --icon-color-muted: var(--ds-color-text-weakest);
  --icon-color-inverse: var(--ds-color-white);
  
  /* Icon spacing in inputs/buttons */
  --icon-spacing-xs: var(--ds-space-xs);
  --icon-spacing-s: var(--ds-space-s);
  --icon-spacing-m: var(--ds-space-m);
  --icon-spacing-l: var(--ds-space-l);
  
  /* Icon backgrounds (for standalone icons) */
  --icon-bg-default: transparent;
  --icon-bg-subtle: var(--ds-color-surface-raised);
  --icon-bg-primary: var(--ds-color-primary-weak);
  --icon-bg-success: var(--ds-color-success-weak);
  --icon-bg-warning: var(--ds-color-warning-weak);
  --icon-bg-error: var(--ds-color-danger-weak);
  --icon-bg-info: var(--ds-color-info-weak);
  
  /* Icon animation */
  --icon-transition: all var(--ds-duration-fast) var(--ds-ease-out);
  --icon-rotate-duration: var(--ds-duration-normal);
  --icon-pulse-duration: var(--ds-duration-slow);
}

/* ========================================
   Base Icon Styles
   ======================================== */

.c-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--icon-size-m);
  height: var(--icon-size-m);
  flex-shrink: 0;
  vertical-align: middle;
  color: var(--icon-color-default);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: var(--icon-transition);
  pointer-events: none; /* Prevent accidental clicks */
  line-height: 0;
}

/* SVG within icon should inherit size */
.c-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* ========================================
   Icon Sizes
   ======================================== */

.c-icon--xs {
  width: var(--icon-size-xs);
  height: var(--icon-size-xs);
}

.c-icon--s {
  width: var(--icon-size-s);
  height: var(--icon-size-s);
}

.c-icon--m {
  width: var(--icon-size-m);
  height: var(--icon-size-m);
}

.c-icon--l {
  width: var(--icon-size-l);
  height: var(--icon-size-l);
}

.c-icon--xl {
  width: var(--icon-size-xl);
  height: var(--icon-size-xl);
}

.c-icon--2xl {
  width: var(--icon-size-2xl);
  height: var(--icon-size-2xl);
}

.c-icon--3xl {
  width: var(--icon-size-3xl);
  height: var(--icon-size-3xl);
}

/* ========================================
   Icon Colors
   ======================================== */

.c-icon--primary {
  color: var(--icon-color-primary);
}

.c-icon--secondary {
  color: var(--icon-color-secondary);
}

.c-icon--success {
  color: var(--icon-color-success);
}

.c-icon--warning {
  color: var(--icon-color-warning);
}

.c-icon--error,
.c-icon--danger {
  color: var(--icon-color-error);
}

.c-icon--info {
  color: var(--icon-color-info);
}

.c-icon--neutral {
  color: var(--icon-color-neutral);
}

.c-icon--muted {
  color: var(--icon-color-muted);
}

.c-icon--inverse {
  color: var(--icon-color-inverse);
}

/* ========================================
   Icon Backgrounds (Standalone)
   ======================================== */

.c-icon--with-bg {
  padding: var(--icon-spacing-s);
  border-radius: var(--ds-radius-s);
  background-color: var(--icon-bg-subtle);
}

.c-icon--with-bg.c-icon--xs {
  padding: calc(var(--icon-spacing-xs) / 2);
}

.c-icon--with-bg.c-icon--s {
  padding: var(--icon-spacing-xs);
}

.c-icon--with-bg.c-icon--l {
  padding: var(--icon-spacing-m);
}

.c-icon--with-bg.c-icon--xl {
  padding: var(--icon-spacing-l);
}

/* Background colors */
.c-icon--bg-primary {
  background-color: var(--icon-bg-primary);
  color: var(--icon-color-primary);
}

.c-icon--bg-success {
  background-color: var(--icon-bg-success);
  color: var(--icon-color-success);
}

.c-icon--bg-warning {
  background-color: var(--icon-bg-warning);
  color: var(--icon-color-warning);
}

.c-icon--bg-error {
  background-color: var(--icon-bg-error);
  color: var(--icon-color-error);
}

.c-icon--bg-info {
  background-color: var(--icon-bg-info);
  color: var(--icon-color-info);
}

/* Circle background */
.c-icon--circle {
  border-radius: var(--ds-radius-circle);
}

/* ========================================
   Icon in Input Fields
   ======================================== */

/* Container for input with icons */
.c-input-icon-wrapper {
  position: relative;
  display: inline-flex;
  width: 100%;
}

/* Icon inside input - left */
.c-icon--input-left {
  position: absolute;
  left: var(--icon-spacing-m);
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  pointer-events: none;
}

/* Icon inside input - right */
.c-icon--input-right {
  position: absolute;
  right: var(--icon-spacing-m);
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  pointer-events: none;
}

/* Clickable icon in input (like password toggle) */
.c-icon--input-clickable {
  pointer-events: auto;
  cursor: pointer;
}

.c-icon--input-clickable:hover {
  color: var(--icon-color-primary);
}

/* Input padding adjustments when icons present */
/* .c-input--icon-left {
  padding-left: calc(var(--icon-size-m) + var(--icon-spacing-m) * 2);
}

.c-input--icon-right {
  padding-right: calc(var(--icon-size-m) + var(--icon-spacing-m) * 2);
} */

.c-input--icon-both {
  padding-left: calc(var(--icon-size-m) + var(--icon-spacing-m) * 2);
  padding-right: calc(var(--icon-size-m) + var(--icon-spacing-m) * 2);
}

/* ========================================
   Icon Prefix/Suffix (Outside Input)
   ======================================== */

.c-input-group {
  display: inline-flex;
  align-items: center;
  width: 100%;
  position: relative;
}

.c-icon--prefix,
.c-icon--suffix {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--icon-spacing-s) var(--icon-spacing-m);
  background-color: var(--ds-color-surface-raised);
  border: 1px solid var(--ds-color-border);
  color: var(--icon-color-neutral);
}

.c-icon--prefix {
  border-right: 0;
  border-radius: var(--ds-radius-s) 0 0 var(--ds-radius-s);
}

.c-icon--suffix {
  border-left: 0;
  border-radius: 0 var(--ds-radius-s) var(--ds-radius-s) 0;
}

/* Input adjustments when used with prefix/suffix */
.c-input-group .c-input {
  flex: 1;
  border-radius: 0;
}

.c-input-group .c-input:first-child {
  border-radius: var(--ds-radius-s) 0 0 var(--ds-radius-s);
}

.c-input-group .c-input:last-child {
  border-radius: 0 var(--ds-radius-s) var(--ds-radius-s) 0;
}

/* ========================================
   Icon Buttons
   ======================================== */

.c-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--icon-spacing-s);
  background-color: transparent;
  border: none;
  border-radius: var(--ds-radius-s);
  color: var(--icon-color-default);
  cursor: pointer;
  transition: var(--icon-transition);
  position: relative;
}

.c-icon-button:hover {
  background-color: var(--ds-color-surface-raised);
}

.c-icon-button:focus-visible {
  outline: 2px solid var(--ds-color-focus);
  outline-offset: 2px;
}

.c-icon-button:active {
  transform: scale(0.95);
}

.c-icon-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.c-icon-button .c-icon {
  pointer-events: none;
}

/* Icon button sizes */
.c-icon-button--xs {
  padding: calc(var(--icon-spacing-xs) / 2);
}

.c-icon-button--s {
  padding: var(--icon-spacing-xs);
}

.c-icon-button--m {
  padding: var(--icon-spacing-s);
}

.c-icon-button--l {
  padding: var(--icon-spacing-m);
}

.c-icon-button--xl {
  padding: var(--icon-spacing-l);
}

/* ========================================
   Icon States
   ======================================== */

/* Loading/spinning icon */
.c-icon--spinning {
  animation: icon-spin var(--icon-rotate-duration) linear infinite;
}

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

/* Pulsing icon */
.c-icon--pulse {
  animation: icon-pulse var(--icon-pulse-duration) ease-in-out infinite;
}

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

/* Disabled state */
.c-icon--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Interactive icon */
.c-icon--interactive {
  cursor: pointer;
  pointer-events: auto;
}

.c-icon--interactive:hover {
  transform: scale(1.1);
  color: var(--icon-color-primary);
}

.c-icon--interactive:active {
  transform: scale(0.95);
}

/* ========================================
   Icon in Labels
   ======================================== */

.c-label-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--icon-spacing-xs);
}

.c-label-icon .c-icon {
  width: var(--icon-size-s);
  height: var(--icon-size-s);
}

/* ========================================
   Icon Lists/Groups
   ======================================== */

.c-icon-list {
  display: flex;
  align-items: center;
  gap: var(--icon-spacing-s);
}

.c-icon-list--vertical {
  flex-direction: column;
}

.c-icon-list--spaced {
  gap: var(--icon-spacing-m);
}

/* ========================================
   Icon Badges
   ======================================== */

.c-icon-badge {
  position: relative;
  display: inline-flex;
}

.c-icon-badge__dot {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  background-color: var(--ds-color-danger);
  border-radius: var(--ds-radius-circle);
  border: 2px solid var(--ds-color-white);
}

.c-icon-badge__count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  background-color: var(--ds-color-danger);
  color: var(--ds-color-white);
  border-radius: var(--ds-radius-pill);
  font-size: var(--ds-font-size-xs);
  font-weight: var(--ds-font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* ========================================
   Accessibility & Focus States
   ======================================== */

/* Focus styles for interactive icons */
.c-icon--interactive:focus-visible {
  outline: 2px solid var(--ds-color-focus);
  outline-offset: 2px;
  border-radius: var(--ds-radius-xs);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .c-icon {
    stroke-width: 2.5;
  }
  
  .c-icon--with-bg {
    border: 1px solid currentColor;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .c-icon--spinning {
    animation: none;
  }
  
  .c-icon--pulse {
    animation: none;
  }
  
  .c-icon--interactive:hover {
    transform: none;
  }
}

/* ========================================
   Utility Classes
   ======================================== */

/* Rotate icons */
.c-icon--rotate-45 { transform: rotate(45deg); }
.c-icon--rotate-90 { transform: rotate(90deg); }
.c-icon--rotate-180 { transform: rotate(180deg); }
.c-icon--rotate-270 { transform: rotate(270deg); }

/* Flip icons */
.c-icon--flip-h { transform: scaleX(-1); }
.c-icon--flip-v { transform: scaleY(-1); }

/* Hide icon visually but keep for screen readers */
.c-icon--sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}