/* Estilos para animações e interações do blog Espectro Azul */

/* Animações de entrada */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Animação para cards na página inicial */
.card {
    opacity: 0;
}

.card:nth-child(1) {
    animation: fadeInUp 0.6s ease 0.1s forwards;
}

.card:nth-child(2) {
    animation: fadeInUp 0.6s ease 0.3s forwards;
}

.card:nth-child(3) {
    animation: fadeInUp 0.6s ease 0.5s forwards;
}

/* Efeito de hover para botões */
.btn {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: rgba(0, 0, 0, 0.1);
    transition: height 0.3s ease;
    z-index: -1;
}

.btn:hover:after {
    height: 100%;
}

/* Efeito de hover para links de navegação */
nav ul li a {
    position: relative;
}

nav ul li a:before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

nav ul li a:hover:before {
    width: 100%;
}

/* Efeito de scroll suave */
html {
    scroll-behavior: smooth;
}

/* Animação para o botão de voltar ao topo */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, background-color 0.3s;
    z-index: 99;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
}

/* Animação para mensagens de feedback */
.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 4px;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    z-index: 1000;
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.3s, transform 0.3s;
}

.message.show {
    opacity: 1;
    transform: translateY(0);
}

.message-success {
    border-left: 4px solid #28a745;
}

.message-error {
    border-left: 4px solid #dc3545;
}

.message-info {
    border-left: 4px solid var(--primary-color);
}

/* Efeito de loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Efeito de destaque para elementos importantes */
.highlight-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(74, 144, 226, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(74, 144, 226, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(74, 144, 226, 0);
    }
}

/* Efeito de transição para imagens */
.img-transition {
    transition: transform 0.5s ease, filter 0.5s ease;
}

.img-transition:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

/* Efeito de parallax para seções */
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Animação para estatísticas */
.stat-counter {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-counter.animated {
    animation: countUp 2s ease-out forwards;
}

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

/* Efeito de hover para cards de recursos */
.resource-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* Efeito de accordion para FAQs */
.faq-item {
    margin-bottom: 15px;
    border-radius: 4px;
    overflow: hidden;
}

.faq-question {
    background-color: var(--light-bg);
    padding: 15px;
    cursor: pointer;
    position: relative;
    font-weight: bold;
}

.faq-question:after {
    content: '+';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.faq-item.active .faq-question:after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
    padding: 0 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 15px;
    max-height: 500px;
}

/* Efeito de tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: white;
    text-align: center;
    border-radius: 4px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Efeito de zoom para galeria de imagens */
.gallery-item {
    overflow: hidden;
    border-radius: 8px;
}

.gallery-item img {
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* Efeito de typing para textos */
.typing-effect {
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    overflow: hidden;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

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

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--primary-color) }
}

/* Efeito de hover para botões sociais */
.social-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-bg);
    color: var(--primary-color);
    margin-right: 10px;
    transition: transform 0.3s, background-color 0.3s, color 0.3s;
}

.social-button:hover {
    transform: translateY(-3px);
    background-color: var(--primary-color);
    color: white;
}

/* Efeito de preloader para o site */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--light-bg);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Efeito de hover para cards de artigos */
.article-card {
    position: relative;
    overflow: hidden;
}

.article-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.article-card:hover .article-card-overlay {
    opacity: 1;
}

.article-card-btn {
    transform: translateY(20px);
    transition: transform 0.3s;
}

.article-card:hover .article-card-btn {
    transform: translateY(0);
}