static/css/animations.css

/* Enhanced Animations and Transitions - FLICKERING FIXED */

/* Page Enter/Exit Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Shimmer Effect for Loading States */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Rotate Animation */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Shake Animation for Errors */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* Progress Bar Animation */
@keyframes progress {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}

/* Apply Animations to Elements */
.tab-content.active {
    animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card {
    animation: scaleIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:nth-child(1) {
    animation-delay: 0.1s;
}

.stat-card:nth-child(2) {
    animation-delay: 0.2s;
}

.stat-card:nth-child(3) {
    animation-delay: 0.3s;
}

.stat-card:nth-child(4) {
    animation-delay: 0.4s;
}

.card {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0); /* GPU acceleration */
    will-change: auto; /* Prevent constant GPU layer */
}

/* FIXED: Removed bounce animation on hover - caused flickering */
/* .card:hover .card-icon { animation: bounce 0.5s ease; } */

/* Button Hover Effects - Optimized */
.btn-primary,
.btn-refresh {
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover,
.btn-refresh:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.btn-primary:active,
.btn-refresh:active {
    transform: translateY(0);
}

/* Loading Shimmer Effect */
.skeleton-loading {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 25%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.05) 75%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite linear;
}

/* Hover Lift Effect - Optimized */
.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    transform: translateZ(0);
}

.hover-lift:hover {
    transform: translateY(-3px) translateZ(0);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
}

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    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, height 0.6s;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
}

/* Tab Button Transitions */
.tab-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.tab-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--gradient-purple);
    transform: translateX(-50%);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-btn.active::before,
.tab-btn:hover::before {
    width: 80%;
}

/* FIXED: Removed infinite glow-pulse animation on input focus */
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
    transition: box-shadow 0.15s ease;
}

/* FIXED: Status Badge - removed infinite pulse */
.status-badge {
    animation: fadeInDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* FIXED: Status dot - removed infinite pulse animation */
.status-dot {
    /* Use static indicator - no animation */
}

/* Alert Slide In */
.alert {
    animation: slideInFromBottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.alert.alert-error {
    animation: slideInFromBottom 0.4s cubic-bezier(0.4, 0, 0.2, 1), shake 0.5s 0.4s;
}

/* Chart Container Animation */
canvas {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Logo Icon Animation - Limited */
.logo-icon {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* FIXED: Mini Stat - removed scale, only lift */
.mini-stat {
    transition: transform 0.2s ease;
    transform: translateZ(0);
}

.mini-stat:hover {
    transform: translateY(-2px) translateZ(0);
}

/* FIXED: Table Row - removed transform shift */
table tr {
    transition: background-color 0.15s ease;
}

table tr:hover {
    background: rgba(102, 126, 234, 0.08);
}

/* Theme Toggle Animation */
.theme-toggle {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle:hover {
    transform: rotate(180deg);
}

/* FIXED: Sentiment Badge - removed scale on hover */
.sentiment-badge {
    animation: fadeInLeft 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transition: opacity 0.2s ease;
}

.sentiment-badge:hover {
    opacity: 0.9;
}

/* AI Result Card Animation */
.ai-result-card {
    animation: scaleIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Model Status Indicator */
.model-status {
    animation: fadeInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Progress Indicator */
.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-purple);
    animation: progress 2s ease-in-out;
}

/* Stagger Animation for Lists */
.stagger-item {
    animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }
.stagger-item:nth-child(7) { animation-delay: 0.7s; }
.stagger-item:nth-child(8) { animation-delay: 0.8s; }
.stagger-item:nth-child(9) { animation-delay: 0.9s; }
.stagger-item:nth-child(10) { animation-delay: 1s; }

/* Reduce Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}