/**
 * Pure CSS Icons Component - Complete Icon System
 * ==============================================
 * Professional icon handling without Bootstrap dependencies
 */

/* Icon Base Styles */
.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    fill: currentColor;
}

/* Bootstrap Icons Support */
[class^="bi-"],
[class*=" bi-"] {
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    fill: currentColor;
}

/* Icon Sizes */
.icon-xs { font-size: 0.75rem; }
.icon-sm { font-size: 0.875rem; }
.icon-md { font-size: 1rem; }
.icon-lg { font-size: 1.25rem; }
.icon-xl { font-size: 1.5rem; }
.icon-2x { font-size: 2rem; }
.icon-3x { font-size: 3rem; }

/* Bootstrap Icon Size Classes */
.bi-xs { font-size: 0.75rem; }
.bi-sm { font-size: 0.875rem; }
.bi-md { font-size: 1rem; }
.bi-lg { font-size: 1.25rem; }
.bi-xl { font-size: 1.5rem; }
.bi-2x { font-size: 2rem; }
.bi-3x { font-size: 3rem; }

/* Icon Colors */
.icon-primary { color: #4b5563; }
.icon-secondary { color: #6b7280; }
.icon-success { color: #10b981; }
.icon-danger { color: #ef4444; }
.icon-warning { color: #f59e0b; }
.icon-info { color: #3b82f6; }
.icon-light { color: #f9fafb; }
.icon-dark { color: #1f2937; }
.icon-white { color: #ffffff; }
.icon-muted { color: #9ca3af; }

/* Icon Spacing */
.icon-spaced { margin-right: 0.5rem; }
.icon-spaced-left { margin-left: 0.5rem; }
.icon-spaced-both { margin: 0 0.5rem; }

/* Icon States */
.icon-hover:hover {
    opacity: 0.8;
    transition: opacity 0.15s ease-in-out;
}

.icon-active {
    opacity: 0.9;
}

.icon-disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* Icon Animations */
.icon-spin {
    animation: iconSpin 1s linear infinite;
}

@keyframes iconSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.icon-pulse {
    animation: iconPulse 2s infinite;
}

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

.icon-bounce {
    animation: iconBounce 1s infinite;
}

@keyframes iconBounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0, -4px, 0);
    }
}

/* Icon Button Integration */
.pure-btn .icon,
.pure-btn [class^="bi-"],
.pure-btn [class*=" bi-"] {
    margin-right: 0.375rem;
    margin-left: 0;
}

.pure-btn .icon:only-child,
.pure-btn [class^="bi-"]:only-child,
.pure-btn [class*=" bi-"]:only-child {
    margin: 0;
}

.pure-btn-sm .icon,
.pure-btn-sm [class^="bi-"],
.pure-btn-sm [class*=" bi-"] {
    font-size: 0.75rem;
}

.pure-btn-lg .icon,
.pure-btn-lg [class^="bi-"],
.pure-btn-lg [class*=" bi-"] {
    font-size: 1.25rem;
}

/* Icon List */
.icon-list {
    list-style: none;
    padding-left: 0;
}

.icon-list-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.icon-list-item .icon,
.icon-list-item [class^="bi-"],
.icon-list-item [class*=" bi-"] {
    margin-right: 0.75rem;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

/* Icon Stack */
.icon-stack {
    position: relative;
    display: inline-block;
    width: 2em;
    height: 2em;
    line-height: 2em;
    vertical-align: middle;
}

.icon-stack-1x,
.icon-stack-2x {
    position: absolute;
    left: 0;
    width: 100%;
    text-align: center;
}

.icon-stack-1x {
    line-height: inherit;
}

.icon-stack-2x {
    font-size: 2em;
}

/* Icon Border */
.icon-border {
    border: 0.08em solid;
    border-radius: 0.1em;
    padding: 0.2em 0.25em 0.15em;
}

/* Icon Circle */
.icon-circle {
    background-color: currentColor;
    border-radius: 50%;
    color: white;
    padding: 0.2em;
}

/* Icon Square */
.icon-square {
    background-color: currentColor;
    color: white;
    padding: 0.2em;
}

/* Responsive Icons */
@media (max-width: 768px) {
    .icon-responsive {
        font-size: 0.875rem;
    }
    
    .pure-btn .icon-responsive,
    .pure-btn [class^="bi-"].icon-responsive,
    .pure-btn [class*=" bi-"].icon-responsive {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .icon-responsive {
        font-size: 0.75rem;
    }
    
    .pure-btn .icon-responsive,
    .pure-btn [class^="bi-"].icon-responsive,
    .pure-btn [class*=" bi-"].icon-responsive {
        font-size: 0.625rem;
    }
}

/* Icon Text Alignment */
.icon-text {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.icon-text-vertical {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

/* Accessibility */
.icon[aria-hidden="true"] {
    speak: none;
}

.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;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .icon-auto {
        color: #f9fafb;
    }
    
    .icon-muted {
        color: #6b7280;
    }
}

/* Print Styles */
@media print {
    .icon,
    [class^="bi-"],
    [class*=" bi-"] {
        color: #000 !important;
    }
    
    .icon-spin,
    .icon-pulse,
    .icon-bounce {
        animation: none !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .icon,
    [class^="bi-"],
    [class*=" bi-"] {
        filter: contrast(2);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .icon-spin,
    .icon-pulse,
    .icon-bounce {
        animation: none;
    }
}