/**
 * ═══════════════════════════════════════════════════════════════
 * QUIZ MODERN - ANIMATIONS CSS
 * ═══════════════════════════════════════════════════════════════
 * Keyframes și animații pentru interfața quiz-ului
 */

/* ═══════════════════════════════════════════════════════════════
   KEYFRAMES - INTRĂRI
   ═══════════════════════════════════════════════════════════════ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@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(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

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

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ═══════════════════════════════════════════════════════════════
   KEYFRAMES - IEȘIRI
   ═══════════════════════════════════════════════════════════════ */

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

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

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

@keyframes scaleOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.8);
    }
}

/* ═══════════════════════════════════════════════════════════════
   KEYFRAMES - LOOPING / EFECTE CONTINUE
   ═══════════════════════════════════════════════════════════════ */

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

@keyframes floatSlow {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-8px) rotate(1deg);
    }
    50% {
        transform: translateY(-15px) rotate(0deg);
    }
    75% {
        transform: translateY(-8px) rotate(-1deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

@keyframes pulseSoft {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
    }
    50% {
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
    }
}

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

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

@keyframes wiggle {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-5deg);
    }
    75% {
        transform: rotate(5deg);
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    14% {
        transform: scale(1.1);
    }
    28% {
        transform: scale(1);
    }
    42% {
        transform: scale(1.1);
    }
    70% {
        transform: scale(1);
    }
}

/* ═══════════════════════════════════════════════════════════════
   KEYFRAMES - EFECTE SPECIALE
   ═══════════════════════════════════════════════════════════════ */

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

@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes glowPulse {
    0%, 100% {
        filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5));
    }
    50% {
        filter: drop-shadow(0 0 25px rgba(59, 130, 246, 0.8));
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

@keyframes countdownPulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ═══════════════════════════════════════════════════════════════
   KEYFRAMES - CONFETTI / CELEBRARE
   ═══════════════════════════════════════════════════════════════ */

@keyframes confettiFall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

@keyframes celebrationBurst {
    0% {
        transform: scale(0) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: scale(1.5) rotate(180deg);
        opacity: 1;
    }
    100% {
        transform: scale(2) rotate(360deg);
        opacity: 0;
    }
}

@keyframes starTwinkle {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

/* ═══════════════════════════════════════════════════════════════
   CLASE UTILITARE DE ANIMAȚIE
   ═══════════════════════════════════════════════════════════════ */

/* Intrări */
.animate-fadeIn {
    animation: fadeIn 0.5s ease-out forwards;
}

.animate-fadeInUp {
    animation: fadeInUp 0.5s ease-out forwards;
}

.animate-fadeInDown {
    animation: fadeInDown 0.5s ease-out forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.5s ease-out forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 0.5s ease-out forwards;
}

.animate-scaleIn {
    animation: scaleIn 0.4s ease-out forwards;
}

.animate-bounceIn {
    animation: bounceIn 0.6s ease-out forwards;
}

.animate-slideInUp {
    animation: slideInUp 0.5s ease-out forwards;
}

/* Ieșiri */
.animate-fadeOut {
    animation: fadeOut 0.3s ease-out forwards;
}

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

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

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

/* Looping */
.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-floatSlow {
    animation: floatSlow 6s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-pulseSoft {
    animation: pulseSoft 2s ease-in-out infinite;
}

.animate-pulseGlow {
    animation: pulseGlow 2s ease-in-out infinite;
}

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

.animate-spinSlow {
    animation: spinSlow 3s linear infinite;
}

.animate-bounce {
    animation: bounce 1s ease infinite;
}

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

.animate-wiggle {
    animation: wiggle 1s ease-in-out infinite;
}

.animate-heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

/* Efecte speciale */
.animate-shimmer {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

.animate-gradientFlow {
    background-size: 200% 200%;
    animation: gradientFlow 5s ease infinite;
}

.animate-glowPulse {
    animation: glowPulse 2s ease-in-out infinite;
}

/* ═══════════════════════════════════════════════════════════════
   DELAY UTILITIES
   ═══════════════════════════════════════════════════════════════ */

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }

/* ═══════════════════════════════════════════════════════════════
   DURATION UTILITIES
   ═══════════════════════════════════════════════════════════════ */

.duration-150 { animation-duration: 150ms; }
.duration-300 { animation-duration: 300ms; }
.duration-500 { animation-duration: 500ms; }
.duration-700 { animation-duration: 700ms; }
.duration-1000 { animation-duration: 1000ms; }
.duration-2000 { animation-duration: 2000ms; }

/* ═══════════════════════════════════════════════════════════════
   TRANZIȚII UTILITARE
   ═══════════════════════════════════════════════════════════════ */

.transition-none { transition: none; }
.transition-all { transition: all 0.3s ease; }
.transition-fast { transition: all 0.15s ease; }
.transition-slow { transition: all 0.5s ease; }
.transition-colors { transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease; }
.transition-opacity { transition: opacity 0.3s ease; }
.transition-transform { transition: transform 0.3s ease; }

/* ═══════════════════════════════════════════════════════════════
   HOVER ANIMATIONS
   ═══════════════════════════════════════════════════════════════ */

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

.hover-bright {
    transition: filter 0.3s ease;
}

.hover-bright:hover {
    filter: brightness(1.1);
}

/* ═══════════════════════════════════════════════════════════════
   STĂRI INIȚIALE (pentru animații la intrare)
   ═══════════════════════════════════════════════════════════════ */

.opacity-0 { opacity: 0; }
.translate-y-10 { transform: translateY(40px); }
.translate-y--10 { transform: translateY(-40px); }
.scale-0 { transform: scale(0); }
.scale-95 { transform: scale(0.95); }

/* ═══════════════════════════════════════════════════════════════
   REDUCED MOTION (Accesibilitate)
   ═══════════════════════════════════════════════════════════════ */

@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;
    }
}