/**
 * Template Enhancements - Global UI Polish
 * BioEngine - Smooth transitions, animations, and micro-interactions
 * Version: 1.0.0
 * Date: February 15, 2026
 */

/* ========================================
   SMOOTH TRANSITIONS
   ======================================== */

* {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Exclude specific elements from global transition */
*:is(
    input[type="range"],
    progress,
    [data-no-transition],
    .loading-spinner,
    .skeleton,
    .toast
) {
    transition: none;
}

/* ========================================
   CARD ENHANCEMENTS
   ======================================== */

.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    will-change: transform, box-shadow;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.12),
        0 4px 8px rgba(0, 0, 0, 0.08);
}

.card:active {
    transform: translateY(-2px);
    transition-duration: 0.1s;
}

/* Card title animation */
.card-title {
    position: relative;
    display: inline-block;
}

.card-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: currentColor;
    transition: width 0.3s ease;
}

.card:hover .card-title::after {
    width: 100%;
}

/* ========================================
   BUTTON ENHANCEMENTS
   ======================================== */

.btn,
button:not([data-no-enhance]) {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    transform: translateZ(0); /* Hardware acceleration */
}

/* Ripple effect container (handled by JS) */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    pointer-events: none;
}

.btn:active::before {
    width: 300px;
    height: 300px;
    transition-duration: 0s;
}

/* Button hover lift */
.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Disabled button styles */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   LOADING SKELETONS
   ======================================== */

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

.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.1) 25%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0.1) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 4px;
    min-height: 1em;
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
    border-radius: 4px;
}

.skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.skeleton-card {
    height: 200px;
    border-radius: 12px;
}

/* ========================================
   FOCUS STATES (WCAG AAA Accessibility)
   ======================================== */

:focus {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid #60a5fa;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

/* Interactive elements focus */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid #60a5fa;
    outline-offset: 2px;
}

/* ========================================
   COLOR CONTRAST ENHANCEMENTS
   ======================================== */

/* Ensure WCAG AAA contrast (7:1 ratio) */
.text-low-contrast {
    color: #4a5568; /* Improved from #999 */
}

.text-muted {
    color: #6b7280; /* Better contrast */
}

/* Link colors with proper contrast */
a {
    color: #2563eb; /* Darker blue for better contrast */
}

a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

/* ========================================
   SMOOTH SCROLLING
   ======================================== */

html {
    scroll-behavior: smooth;
}

/* Custom scrollbar (webkit) */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
    background-clip: padding-box;
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) rgba(0, 0, 0, 0.05);
}

/* ========================================
   FORM ENHANCEMENTS
   ======================================== */

input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus,
textarea:focus,
select:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

/* Input validation states */
input:invalid:not(:placeholder-shown),
textarea:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

input:valid:not(:placeholder-shown),
textarea:valid:not(:placeholder-shown) {
    border-color: #22c55e;
}

/* Form labels */
label {
    transition: color 0.3s ease;
}

label:has(+ input:focus),
label:has(+ textarea:focus),
label:has(+ select:focus) {
    color: #60a5fa;
    font-weight: 600;
}

/* ========================================
   MODAL & OVERLAY ANIMATIONS
   ======================================== */

@keyframes modal-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modal-slide-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-overlay {
    animation: modal-fade-in 0.3s ease;
}

.modal-content {
    animation: modal-slide-up 0.3s ease;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */

@keyframes toast-slide-in-right {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes toast-slide-out-right {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast {
    animation: toast-slide-in-right 0.3s ease;
}

.toast.hiding {
    animation: toast-slide-out-right 0.3s ease;
}

/* ========================================
   LOADING INDICATORS
   ======================================== */

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

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

.loading-spinner {
    animation: spin 1s linear infinite;
}

.loading-pulse {
    animation: pulse-opacity 1.5s ease-in-out infinite;
}

/* ========================================
   LIST & TABLE ENHANCEMENTS
   ======================================== */

.list-item,
tr {
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.list-item:hover,
tbody tr:hover {
    background-color: rgba(96, 165, 250, 0.05);
    transform: translateX(4px);
}

.list-item:active,
tbody tr:active {
    transform: translateX(2px);
}

/* Zebra striping with smooth transitions */
tbody tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

tbody tr:nth-child(even):hover {
    background-color: rgba(96, 165, 250, 0.08);
}

/* ========================================
   IMAGE LOADING
   ======================================== */

img {
    transition: opacity 0.3s ease, filter 0.3s ease;
}

img[data-loading="true"] {
    opacity: 0.5;
    filter: blur(5px);
}

img[data-loaded="true"] {
    opacity: 1;
    filter: blur(0);
}

/* ========================================
   TOOLTIP ENHANCEMENTS
   ======================================== */

[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    font-size: 13px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
}

[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

[data-tooltip]:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

[data-tooltip]:hover::after {
    opacity: 1;
}

/* ========================================
   BADGE ANIMATIONS
   ======================================== */

@keyframes badge-ping {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.badge-animated::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    background: currentColor;
    animation: badge-ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

/* ========================================
   UTILITY ANIMATIONS
   ======================================== */

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

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

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

.animate-fade-in {
    animation: fade-in 0.3s ease;
}

.animate-fade-out {
    animation: fade-out 0.3s ease;
}

.animate-slide-down {
    animation: slide-down 0.3s ease;
}

.animate-slide-up {
    animation: slide-up 0.3s ease;
}

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

@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;
    }
}

/* ========================================
   DARK MODE SUPPORT
   ======================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
    
    .skeleton {
        background: linear-gradient(
            90deg,
            rgba(255, 255, 255, 0.05) 25%,
            rgba(255, 255, 255, 0.1) 50%,
            rgba(255, 255, 255, 0.05) 75%
        );
    }
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */

/* Use GPU acceleration for animated elements */
.card,
.btn,
.modal-content,
.toast {
    transform: translateZ(0);
    will-change: transform;
}

/* Remove will-change after animation */
.card:not(:hover),
.btn:not(:active) {
    will-change: auto;
}