/* =====================================================================
   ENHANCED ANIMATIONS - Sem limitações, fluidas e responsivas
   Pulsações, brilhos, flutuações e efeitos visuais avançados
   ===================================================================== */

:root {
    --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
}

/* ===== PULSAÇÃO FLUIDA SEM LIMITES ===== */

@keyframes pulseGlow {
    0% {
        transform: scale(1);
        filter: drop-shadow(0 0 6px rgba(124, 58, 237, 0.3))
                drop-shadow(0 0 12px rgba(236, 72, 153, 0.15));
    }
    25% {
        transform: scale(1.02);
        filter: drop-shadow(0 0 10px rgba(124, 58, 237, 0.5))
                drop-shadow(0 0 18px rgba(236, 72, 153, 0.3));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 16px rgba(124, 58, 237, 0.8))
                drop-shadow(0 0 28px rgba(236, 72, 153, 0.5));
    }
    75% {
        transform: scale(1.02);
        filter: drop-shadow(0 0 10px rgba(124, 58, 237, 0.5))
                drop-shadow(0 0 18px rgba(236, 72, 153, 0.3));
    }
    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 6px rgba(124, 58, 237, 0.3))
                drop-shadow(0 0 12px rgba(236, 72, 153, 0.15));
    }
}

@keyframes pulseBright {
    0%, 100% {
        opacity: 0.8;
        filter: brightness(1);
    }
    50% {
        opacity: 1;
        filter: brightness(1.15);
    }
}

@keyframes pulseColor {
    0%, 100% {
        filter: hue-rotate(0deg) saturate(100%);
    }
    50% {
        filter: hue-rotate(10deg) saturate(120%);
    }
}

/* ===== BRILHO FLUIDO SEM CLIPPING ===== */

@keyframes shimmerFlow {
    0% {
        background-position: -200% center;
    }
    50% {
        background-position: 100% center;
    }
    100% {
        background-position: 200% center;
    }
}

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

@keyframes glowPulse {
    0%, 100% {
        filter: drop-shadow(0 0 4px rgba(124, 58, 237, 0.4));
    }
    50% {
        filter: drop-shadow(0 0 12px rgba(236, 72, 153, 0.8));
    }
}

/* ===== FLUTUAÇÃO SUAVE ===== */

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

@keyframes floatSway {
    0%, 100% {
        transform: translateX(0) translateY(0);
    }
    25% {
        transform: translateX(2px) translateY(-2px);
    }
    50% {
        transform: translateX(0) translateY(-4px);
    }
    75% {
        transform: translateX(-2px) translateY(-2px);
    }
}

@keyframes floatRotate {
    0%, 100% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(2deg);
    }
}

/* ===== ROTAÇÃO SUAVE ===== */

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

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

@keyframes spinPulse {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(180deg) scale(1.05);
    }
}

/* ===== ENTRADA SUAVE ===== */

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-12px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(12px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===== BOUNCE SUAVE ===== */

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

@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);
    }
}

/* ===== EFEITOS DE HOVER ===== */

@keyframes hoverGlow {
    0%, 100% {
        filter: drop-shadow(0 0 4px rgba(124, 58, 237, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 12px rgba(236, 72, 153, 0.6));
    }
}

@keyframes hoverLift {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-4px);
    }
}

/* ===== APLICAÇÃO DE ANIMAÇÕES ===== */

/* Logo com pulsação fluida */
.logo,
.auth-logo,
.topbar .logo {
    animation: pulseGlow 3s ease-in-out infinite !important;
    transform-origin: center;
    will-change: filter, transform;
}

/* Badges com pulsação */
.nav-badge,
.notification-badge {
    animation: pulseBright 2s ease-in-out infinite;
}

/* Botões com efeitos hover */
.btn-primary {
    transition: all 0.3s var(--spring);
}

.btn-primary:hover {
    /* Bug: quando o mouse saía, `animation` voltava ao valor base do botão
       (que tinha fill-mode "both" + delay), fazendo o botão sumir. Usamos
       drop-shadow direto no hover, sem animar `animation`. */
    filter: drop-shadow(0 0 12px rgba(236, 72, 153, 0.55));
}

/* Ícones com flutuação */
.icon-btn {
    transition: all 0.25s var(--spring);
}

.icon-btn:hover {
    animation: floatUp 2s ease-in-out infinite;
}

/* Cards com entrada suave */
.post-card,
.auth-card {
    animation: fadeInScale 0.6s ease-out;
}

/* Itens de navegação com entrada em cascata */
.nav-item {
    animation: slideInUp 0.5s ease-out;
}

.nav-item:nth-child(1) {
    animation-delay: 0.05s;
}

.nav-item:nth-child(2) {
    animation-delay: 0.1s;
}

.nav-item:nth-child(3) {
    animation-delay: 0.15s;
}

.nav-item:nth-child(4) {
    animation-delay: 0.2s;
}

.nav-item:nth-child(5) {
    animation-delay: 0.25s;
}

.nav-item:nth-child(6) {
    animation-delay: 0.3s;
}

/* Reações com bounce */
.reaction-emoji {
    animation: bounceIn 0.6s var(--spring);
}

/* Mensagens com entrada suave */
.message {
    animation: slideInUp 0.4s ease-out;
}

/* Story ring com glow fluido */
.story-ring {
    animation: glowPulse 2.5s ease-in-out infinite;
}

/* Create circle com rotação suave */
.create-circle::before {
    animation: spinSlow 6s linear infinite;
}

/* ===== EFEITOS DE CLIQUE ===== */

@keyframes clickPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

.btn-primary:active,
.icon-btn:active,
.nav-item:active {
    animation: clickPulse 0.3s ease-out;
}

/* ===== EFEITOS DE CARREGAMENTO ===== */

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

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

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

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

/* ===== EFEITOS DE ERRO ===== */

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-4px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(4px);
    }
}

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

/* ===== EFEITOS DE SUCESSO ===== */

@keyframes successPulse {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.success-animation {
    animation: successPulse 0.6s var(--spring);
}

/* ===== EFEITOS DE FOCO ===== */

@keyframes focusRing {
    from {
        box-shadow: 0 0 0 0 rgba(236, 72, 153, 0.3);
    }
    to {
        box-shadow: 0 0 0 8px rgba(236, 72, 153, 0);
    }
}

.field input:focus {
    animation: focusRing 0.6s ease-out;
}

/* ===== RESPONSIVE - REDUZ ANIMAÇÕES EM MOBILE ===== */

@media (max-width: 480px) {
    .logo,
    .auth-logo,
    .topbar .logo {
        animation: pulseGlow 4s ease-in-out infinite;
    }

    .nav-badge {
        animation: pulseBright 2.5s ease-in-out infinite;
    }

    .story-ring {
        animation: glowPulse 3s ease-in-out infinite;
    }
}

/* ===== RESPEITA PREFERÊNCIA DE MOVIMENTO REDUZIDO ===== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== PERFORMANCE - WILL-CHANGE ===== */

.logo,
.auth-logo,
.create-circle::before,
.story-ring,
.btn-primary:hover {
    will-change: transform, filter;
}

.nav-item.active::before {
    will-change: transform;
}

/* ===== GPU ACCELERATION ===== */

.post-card,
.auth-card,
.nav-item,
.btn-primary {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}