/* ===== VARIÁVEIS ===== */
:root {
    --cor-primaria: #6C5CE7;
    --cor-secundaria: #00B894;
    --cor-destaque: #FF6B35;
    --cor-rosa: #E84393;
    --cor-amarelo: #FFD93D;
    --cor-azul: #0984E3;

    --bg-principal: #F8F9FF;
    --bg-card: #FFFFFF;
    --bg-header: #6C5CE7;

    --texto-escuro: #2D3436;
    --texto-medio: #636E72;
    --texto-claro: #B2BEC3;

    --sombra-card: 0 4px 20px rgba(108, 92, 231, 0.1);
    --sombra-card-hover: 0 8px 40px rgba(108, 92, 231, 0.2);

    --raio-borda: 16px;
    --raio-borda-sm: 8px;
    --raio-borda-tag: 20px;

    --transicao: 0.3s ease;

    --max-largura: 1100px;
}

/* ===== RESET ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== BASE ===== */
body {
    font-family: 'Nunito', sans-serif;
    background: var(--bg-principal);
    color: var(--texto-escuro);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ===== HEADER ===== */
.header {
    background: var(--bg-header);
    color: white;
    padding: 1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(108, 92, 231, 0.3);
}

.header-content {
    max-width: var(--max-largura);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    font-family: 'Fredoka One', cursive;
    font-size: 1.5rem;
    letter-spacing: 0.5px;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tagline {
    font-size: 0.9rem;
    opacity: 0.85;
    font-weight: 600;
}

.header-termos-btn {
    font-family: 'Nunito', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    text-decoration: none;
    transition: 0.3s ease;
    white-space: nowrap;
}

.header-termos-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--cor-primaria) 0%, #a29bfe 100%);
    color: white;
    padding: 3rem 1.5rem 3.5rem;
    text-align: center;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--max-largura);
    margin: 0 auto;
}

.hero-title {
    font-family: 'Fredoka One', cursive;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
}

.hero-description {
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.95;
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-family: 'Fredoka One', cursive;
    font-size: 2rem;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    opacity: 0.8;
    font-weight: 600;
    margin-top: 0.25rem;
}

/* Emojis flutuantes no hero */
.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-emoji {
    position: absolute;
    font-size: 2rem;
    left: var(--x);
    top: var(--y);
    animation: float 4s ease-in-out infinite;
    animation-delay: var(--delay);
    opacity: 0.3;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(10deg); }
}

/* ===== FILTROS ===== */
.filters {
    padding: 1.5rem;
    background: var(--bg-principal);
    position: sticky;
    top: 60px;
    z-index: 50;
}

.filters-content {
    max-width: var(--max-largura);
    margin: 0 auto;
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    font-family: 'Nunito', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 0.5rem 1.2rem;
    border: 2px solid var(--cor-primaria);
    border-radius: var(--raio-borda-tag);
    background: transparent;
    color: var(--cor-primaria);
    cursor: pointer;
    transition: var(--transicao);
}

.filter-btn:hover {
    background: rgba(108, 92, 231, 0.1);
}

.filter-btn.active {
    background: var(--cor-primaria);
    color: white;
}

/* ===== GALERIA ===== */
.gallery {
    padding: 1rem 1.5rem 3rem;
    max-width: var(--max-largura);
    margin: 0 auto;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* ===== CARD ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--raio-borda);
    box-shadow: var(--sombra-card);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: transform var(--transicao), box-shadow var(--transicao);
    opacity: 0;
    transform: translateY(20px);
    animation: cardEntrada 0.5s ease forwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

@keyframes cardEntrada {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--sombra-card-hover);
}

.card.hidden {
    display: none;
}

/* Card Thumbnail */
.card-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-thumbnail-emoji {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

/* ===== THUMBNAILS ===== */

/* Card Body */
.card-body {
    padding: 1.2rem 1.4rem;
    flex: 1;
}

.card-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem;
}

.tag {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.7rem;
    border-radius: var(--raio-borda-tag);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-computacao {
    background: #E8F5E9;
    color: #2E7D32;
}

.tag-matematica {
    background: #FFF3E0;
    color: #E65100;
}

.tag-ciencias {
    background: #E3F2FD;
    color: #1565C0;
}

.tag-portugues {
    background: #FCE4EC;
    color: #C62828;
}

.card-title {
    font-family: 'Fredoka One', cursive;
    font-size: 1.25rem;
    color: var(--texto-escuro);
    margin-bottom: 0.2rem;
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--cor-primaria);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.card-description {
    font-size: 0.9rem;
    color: var(--texto-medio);
    line-height: 1.5;
}

/* Card Footer */
.card-footer {
    padding: 0.8rem 1.4rem;
    border-top: 1px solid #F0F0F5;
    display: flex;
    justify-content: flex-end;
}

.card-cta {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--cor-primaria);
    transition: var(--transicao);
}

.card:hover .card-cta {
    color: var(--cor-destaque);
    letter-spacing: 1px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--texto-escuro);
    color: white;
    padding: 2rem 1.5rem;
    text-align: center;
}

.footer-content {
    max-width: var(--max-largura);
    margin: 0 auto;
}

.footer-brand {
    margin-bottom: 1rem;
}

.footer-logo {
    font-family: 'Fredoka One', cursive;
    font-size: 1.3rem;
}

.footer-tagline {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-top: 0.2rem;
}

.footer-about {
    margin-bottom: 1rem;
}

.footer-about p {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

.footer-legal {
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal p {
    font-size: 0.78rem;
    opacity: 0.55;
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto 0.3rem;
}

.footer-termos-link {
    color: #FF7B54;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s ease;
}

.footer-termos-link:hover {
    color: #FFB347;
    text-decoration: underline;
}

.footer-contato {
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-contato-titulo {
    font-family: 'Fredoka One', cursive;
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
    opacity: 0.9;
}

.footer-contato p {
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
}

.footer-contato a {
    color: #FF7B54;
    text-decoration: none;
    transition: 0.3s ease;
}

.footer-contato a:hover {
    color: #FFB347;
}

.footer-info p {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 0.3rem;
}

.footer-copyright {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    opacity: 0.5;
}

/* ===== RESPONSIVO ===== */
@media (max-width: 768px) {
    .header-content {
        justify-content: center;
        text-align: center;
    }

    .tagline {
        width: 100%;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .floating-emoji {
        font-size: 1.5rem;
        opacity: 0.2;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem 2.5rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .card-title {
        font-size: 1.1rem;
    }
}