/* paleta de cores */
:root {
    --verde-principal: #2ecc71;
    --verde-escuro: #27ae60;
    --verde-claro: #a6e22b;
    --azul: #3498db;
    --roxo: #6a3dad;
    --cinza-escuro: #2c3e50;
    --cinza-claro: #ecf0f1;
    --branco: #ffffff;
    --sombra: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transicao: all 0.3s ease;
}

/* estilo geral */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--cinza-claro);
    color: var(--cinza-escuro);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* cabeçalho */
header {
    background: linear-gradient(135deg, var(--roxo), var(--verde-principal));
    color: var(--branco);
    padding: 20px 0;
    box-shadow: var(--sombra);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 2.5rem;
}

.logo h1 {
    font-size: 1.8rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1px;
}

nav a {
    color: var(--branco);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    border-radius: 30px;
    transition: var(--transicao);
}

nav a:hover, nav a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* conteúdo principal */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://squatro.com.br/wp-content/uploads/2024/09/Historia-do-Centro-de-SP.jpg') no-repeat center/cover;
    color: var(--branco);
    text-align: center;
    padding: 80px 20px;
    margin-bottom: 40px;
    border-radius: 0 0 15px 15px;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
}

.btn {
    display: inline-block;
    background-color: var(--verde-principal);
    color: var(--branco);
    padding: 12px 25px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transicao);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--verde-escuro);
    transform: translateY(-3px);
}

/* botões de autenticação */
.auth-buttons {
    display: flex;
    gap: 10px;
    margin-left: 20px;
}

.btn-auth {
    padding: 8px 16px;
    border: 2px solid var(--branco);
    background: transparent;
    color: var(--branco);
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transicao);
}

.btn-auth-primary {
    background: var(--branco);
    color: var(--roxo);
}

.btn-auth:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-auth-primary:hover {
    background: var(--verde-claro);
    color: var(--branco);
}

/* modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--branco);
    margin: 10% auto;
    padding: 25px;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 15px;
}

.close:hover {
    color: var(--roxo);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--cinza-escuro);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--verde-principal);
}

#auth-form button {
    width: 100%;
    padding: 12px;
    background: var(--verde-principal);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicao);
}

#auth-form button:hover {
    background: var(--verde-escuro);
}

#auth-switch {
    text-align: center;
    margin-top: 20px;
}

#auth-switch a {
    color: var(--verde-principal);
    text-decoration: none;
}

#auth-switch a:hover {
    text-decoration: underline;
}

/* menu do usuário */
.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: 20px;
    color: var(--branco);
}

.user-menu button {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--branco);
    color: var(--branco);
    border-radius: 15px;
    cursor: pointer;
    transition: var(--transicao);
}

.user-menu button:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* responsividade */
@media (max-width: 768px) {
    .auth-buttons {
        margin-left: 0;
        margin-top: 15px;
        justify-content: center;
        width: 100%;
    }
    
    .user-menu {
        margin-left: 0;
        margin-top: 15px;
        justify-content: center;
        width: 100%;
        flex-direction: column;
        gap: 10px;
    }
}

/* seções */
.section-title {
    text-align: center;
    margin-bottom: 35px;
    color: var(--roxo);
    position: relative;
    padding-bottom: 15px;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--verde-principal), var(--roxo));
    border-radius: 2px;
}

section {
    padding: 60px 0;
}

/* instruções de descarte */
.materiais-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.material-card {
    background: linear-gradient(135deg, var(--azul), #7a96c5);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--sombra);
    transition: var(--transicao);
    color: var(--branco);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 320px;
}

.material-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.material-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--verde-claro);
}

.material-card h3 {
    color: var(--verde-claro);
    margin-bottom: 12px;
    font-size: 1.3rem;
}

.material-card p {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* estilos do mapa Leaflet */
#mapa-placeholder {
    height: 450px;
    width: 100%;
    border-radius: 8px;
    z-index: 1;
    border: 1px solid #04f520;
}

/* controles do mapa */
.leaflet-control-zoom a {
    background-color: var(--verde-principal) !important;
    color: white !important;
    border: none !important;
    border-radius: 4px !important;
}

.leaflet-control-zoom a:hover {
    background-color: var(--verde-escuro) !important;
}

@media (max-width: 480px) {
    #mapa-placeholder {
        height: 300px;
    }
}

/* indicador de carregamento */
.mapa-carregando {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
}

/* painel de estatísticas */
.estatisticas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.estatistica-card {
    background-color: var(--branco);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--sombra);
    text-align: center;
}

.estatistica-card i {
    font-size: 2.5rem;
    color: var(--verde-principal);
    margin-bottom: 15px;
}

.estatistica-valor {
    font-size: 2.2rem;
    font-weight: bold;
    color: var(--roxo);
    margin: 10px 0;
}

.barra-progresso {
    height: 20px;
    background-color: var(--cinza-claro);
    border-radius: 10px;
    margin: 15px 0;
    overflow: hidden;
}

.progresso {
    height: 100%;
    background: linear-gradient(to right, var(--verde-principal), var(--verde-claro));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease;
}

/* eventos */
.eventos-lista {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.evento-card {
    background-color: var(--branco);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--sombra);
}

.evento-data {
    background: linear-gradient(135deg, var(--roxo), var(--verde-principal));
    color: var(--branco);
    padding: 15px;
    text-align: center;
    font-weight: 600;
}

.evento-info {
    padding: 20px;
}

.evento-local {
    color: var(--roxo);
    margin: 10px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* compartilhamento */
.compartilhamento {
    background: linear-gradient(135deg, var(--verde-principal), var(--azul));
    color: var(--branco);
    padding: 40px 0;
    text-align: center;
}

.redes-sociais {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.rede-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--branco);
    color: var(--verde-principal);
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transicao);
}

.rede-social:hover {
    transform: translateY(-5px);
    background-color: var(--roxo);
    color: var(--branco);
}

/* rodapé */
footer {
    background-color: var(--cinza-escuro);
    color: var(--branco);
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-info h3 {
    margin-bottom: 15px;
    color: var(--verde-claro);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* responsividade */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .materiais-grid,
    .estatisticas-grid,
    .eventos-lista {
        grid-template-columns: 1fr;
    }
    
    .filtros-mapa {
        flex-direction: column;
        align-items: center;
    }
    
    .material-card {
        min-height: auto;
    }
}

/* animações */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}