/* Importando uma fonte moderna e elegante do Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* Variáveis CSS para tema claro e escuro com cores refinadas */
:root {
    --primary-color: #ff6b35;
    --secondary-color: #e67e22;
    --accent-color: #f39c12;
    --text-color: #2c3e50;
    --text-color-light: #7f8c8d;
    --bg-color: #fdfdfd;
    --card-bg: #ffffff;
    --header-bg: #ffffff;
    --footer-bg: #2c3e50;
    --footer-text: #ecf0f1;
    --border-color: #e0e6ed;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.12);
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius: 12px;
}

[data-theme="dark"] {
    --primary-color: #d35400;
    --secondary-color: #a04000;
    --accent-color: #f39c12;
    --text-color: #e5e7eb;
    --text-color-light: #9ca3af;
    --bg-color: #1a1a1a;
    --card-bg: #252525;
    --header-bg: #1f1f1f;
    --footer-bg: #111111;
    --footer-text: #d1d5db;
    --border-color: #374151;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.5);
}

/* Reset e Estilos Globais com tipografia aprimorada */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Poppins', sans-serif;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header e Navegação com mais sofisticação */
header { background-color: var(--header-bg); box-shadow: var(--shadow); position: sticky; top: 0; z-index: 100; transition: var(--transition); backdrop-filter: blur(10px); }
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
.nav-container { display: flex; justify-content: space-between; align-items: center; width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.logo img { max-height: 45px; width: auto; display: block; transition: var(--transition); }
.logo img:hover { transform: scale(1.05); }
.nav-menu { display: flex; list-style: none; }
.nav-item { margin-left: 2.5rem; }
.nav-link { text-decoration: none; color: var(--text-color); font-weight: 500; transition: var(--transition); position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background-color: var(--primary-color); transition: var(--transition); }
.nav-link:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.theme-toggle { background: none; border: none; color: var(--text-color); font-size: 1.2rem; cursor: pointer; transition: var(--transition); padding: 0.5rem; border-radius: 50%; }
.theme-toggle:hover { color: var(--primary-color); background-color: rgba(255, 107, 53, 0.1); }
.user-menu { display: flex; align-items: center; }
.user-info { display: flex; align-items: center; gap: 0.5rem; position: relative; }
.user-info img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; border: 2px solid var(--border-color); }
.dropdown { position: absolute; top: 100%; right: 0; background-color: var(--card-bg); border-radius: var(--border-radius); box-shadow: var(--shadow); padding: 0.5rem; display: flex; flex-direction: column; gap: 0.5rem; min-width: 150px; opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition); }
.user-info:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.hamburger { display: none; flex-direction: column; cursor: pointer; }
.bar { width: 25px; height: 3px; background-color: var(--text-color); margin: 3px 0; transition: var(--transition); border-radius: 2px; }

/* Botões com design mais moderno */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    text-align: center;
    box-shadow: var(--shadow);
}
.btn-primary { background-color: var(--primary-color); color: white; }
.btn-primary:hover { background-color: var(--secondary-color); transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.btn-secondary { background-color: transparent; color: var(--primary-color); border: 2px solid var(--primary-color); }
.btn-secondary:hover { background-color: var(--primary-color); color: white; transform: translateY(-3px); }
.btn-delete { background-color: var(--accent-color); color: white; }
.btn-delete:hover { background-color: #d63447; transform: translateY(-3px); box-shadow: var(--shadow-hover); }

/* Hero Section menor e mais impactante */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.2)"/></svg>');
    background-size: 20px 20px;
    opacity: 0.3;
}
.hero-content { position: relative; z-index: 1; }
.hero-content h2 { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; text-shadow: 0 2px 10px rgba(0,0,0,0.2); }
.hero-content p { font-size: 1.2rem; max-width: 600px; margin: 0 auto; font-weight: 300; }

/* Posts Section com cards mais elegantes */
.posts-container { padding: 4rem 0; }
.section-title { text-align: center; margin-bottom: 3rem; font-size: 2.2rem; font-weight: 600; color: var(--text-color); }
.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2.5rem; }
.post-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.post-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.post-image { width: 100%; height: 220px; object-fit: cover; }
.post-content { padding: 2rem; flex-grow: 1; display: flex; flex-direction: column; }
.post-title { font-size: 1.4rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text-color); line-height: 1.3; }
.post-excerpt { color: var(--text-color-light); margin-bottom: 1.5rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; flex-grow: 1; }
.post-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.9rem; color: var(--text-color-light); margin-bottom: 1rem; }
.post-author { display: flex; align-items: center; gap: 0.5rem; }
.author-avatar { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; }
.post-date { font-size: 0.8rem; color: var(--text-color-light); }
.post-actions { display: flex; gap: 1.5rem; }
.post-action { display: flex; align-items: center; gap: 0.3rem; color: var(--text-color-light); transition: var(--transition); cursor: pointer; }
.post-action:hover { color: var(--accent-color); transform: scale(1.1); }
.post-action.liked { color: var(--accent-color); }

/* Loading e No Posts */
.loading, .no-posts { text-align: center; padding: 3rem 0; color: var(--text-color-light); }
.loading i, .no-posts i { font-size: 3rem; margin-bottom: 1rem; }

/* Footer */
footer { background-color: var(--footer-bg); color: var(--footer-text); padding: 3rem 0 1rem; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
.footer-logo h3 { color: var(--primary-color); margin-bottom: 0.5rem; }
.footer-links h4, .footer-social h4 { margin-bottom: 1rem; color: var(--primary-color); }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: var(--footer-text); text-decoration: none; transition: var(--transition); }
.footer-links a:hover { color: var(--primary-color); }
.social-icons { display: flex; gap: 1rem; }
.social-icons a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; background-color: rgba(255, 255, 255, 0.1); border-radius: 50%; color: var(--footer-text); transition: var(--transition); }
.social-icons a:hover { background-color: var(--primary-color); transform: translateY(-3px); }
.footer-bottom { text-align: center; padding-top: 1rem; border-top: 1px solid rgba(255, 255, 255, 0.1); font-size: 0.9rem; }

/* Modal */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); overflow-y: auto; backdrop-filter: blur(5px); }
.modal-content { background-color: var(--card-bg); margin: 5% auto; padding: 2.5rem; border-radius: var(--border-radius); width: 90%; max-width: 500px; position: relative; box-shadow: var(--shadow-hover); }
.post-modal-content { max-width: 800px; }
.close { position: absolute; right: 1.5rem; top: 1.5rem; font-size: 1.8rem; cursor: pointer; color: var(--text-color-light); transition: var(--transition); }
.close:hover { color: var(--accent-color); transform: rotate(90deg); }

/* Formulários de Autenticação */
.auth-container { width: 100%; }
.auth-tabs { display: flex; margin-bottom: 2rem; border-bottom: 1px solid var(--border-color); }
.auth-tab { flex: 1; padding: 0.75rem; background: none; border: none; font-size: 1rem; cursor: pointer; color: var(--text-color-light); transition: var(--transition); position: relative; font-weight: 500; }
.auth-tab.active { color: var(--primary-color); }
.auth-tab.active::after { content: ''; position: absolute; bottom: -1px; left: 0; width: 100%; height: 2px; background-color: var(--primary-color); }
.auth-form h2 { margin-bottom: 1.5rem; text-align: center; color: var(--text-color); font-weight: 600; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--text-color); font-weight: 500; }
.form-group input, .form-group textarea { width: 100%; padding: 0.75rem; border: 1px solid var(--border-color); border-radius: 8px; background-color: var(--bg-color); color: var(--text-color); transition: var(--transition); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2); }
.error-message { color: var(--accent-color); margin-top: 1rem; text-align: center; font-weight: 500; }

/* Estilo para inputs de arquivo */
input[type="file"] { border: 1px dashed var(--border-color); background-color: var(--bg-color); padding: 0.75rem; cursor: pointer; border-radius: 8px; }
input[type="file"]::-webkit-file-upload-button { visibility: hidden; }
input[type="file"]::before { content: 'Selecionar Imagem'; display: inline-block; background: var(--primary-color); color: white; padding: 0.5rem 1rem; border-radius: 8px; cursor: pointer; font-weight: 500; margin-right: 1rem; }
input[type="file"]:hover::before { background-color: var(--secondary-color); }

/* Preview de imagem */
.image-preview { margin-top: 1rem; max-width: 100%; border-radius: var(--border-radius); overflow: hidden; box-shadow: var(--shadow); }
.image-preview img { width: 100%; display: block; }

/* Detalhes do Post */
.post-detail { padding: 2rem 0; }
.post-detail-image { width: 100%; max-height: 400px; object-fit: cover; border-radius: var(--border-radius); margin-bottom: 1.5rem; }
.post-detail-title { font-size: 2.2rem; margin-bottom: 1rem; color: var(--text-color); font-weight: 700; }
.post-detail-meta { display: flex; align-items: center; gap: 1rem; margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); }
.post-detail-author { display: flex; align-items: center; gap: 0.5rem; }
.post-detail-author img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.post-detail-content { line-height: 1.8; margin-bottom: 2rem; font-size: 1.05rem; }
.post-detail-content p { margin-bottom: 1rem; }
.post-detail-content img { max-width: 100%; border-radius: var(--border-radius); margin: 1rem 0; }
.post-detail-actions { display: flex; gap: 1rem; margin-bottom: 2rem; }
.comments-section { margin-top: 2rem; }
.comments-title { font-size: 1.5rem; margin-bottom: 1rem; color: var(--text-color); font-weight: 600; }
.comment-form { margin-bottom: 2rem; }
.comment-form textarea { width: 100%; padding: 0.75rem; border: 1px solid var(--border-color); border-radius: 8px; background-color: var(--bg-color); color: var(--text-color); resize: vertical; min-height: 100px; margin-bottom: 1rem; }
.comments-list { display: flex; flex-direction: column; gap: 1.5rem; }
.comment { display: flex; gap: 1rem; }
.comment-avatar { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.comment-content { flex: 1; }
.comment-header { display: flex; justify-content: space-between; margin-bottom: 0.5rem; }
.comment-author { font-weight: 600; color: var(--text-color); }
.comment-date { color: var(--text-color-light); font-size: 0.9rem; }
.comment-text { color: var(--text-color-light); }

/* Estilos para o prompt de login */
.login-prompt { background-color: var(--bg-color); border: 1px solid var(--border-color); padding: 1rem; margin-top: 1rem; border-radius: var(--border-radius); font-size: 0.9rem; color: var(--text-color); display: flex; justify-content: space-between; align-items: center; box-shadow: var(--shadow); }
.login-prompt button { padding: 0.5rem 1rem; font-size: 0.85rem; }

/* Notificação */
.notification { position: fixed; top: 20px; right: 20px; padding: 1rem 1.5rem; background-color: var(--card-bg); border-radius: var(--border-radius); box-shadow: var(--shadow-hover); transform: translateX(120%); transition: transform 0.3s ease; z-index: 1001; border-left: 4px solid var(--primary-color); }
.notification.show { transform: translateX(0); }
.notification.success { border-left-color: #4caf50; }
.notification.error { border-left-color: #f44336; }
.notification.info { border-left-color: #2196F3; }

/* Botão Flutuante do Admin */
.floating-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: var(--shadow-hover);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.floating-btn:hover {
    transform: scale(1.1) rotate(90deg);
    background-color: var(--secondary-color);
}

/* RESPONSIVIDADE - MELHORIAS */
/* Tablets (768px a 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container { padding: 0 30px; }
    .posts-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
    .hero-content h2 { font-size: 2.2rem; }
}

/* Desktops Grandes (1025px em diante) */
@media (min-width: 1025px) {
    .container { max-width: 1400px; } /* Limita a largura para telas muito grandes */
    .posts-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Celulares (até 768px) */
@media (max-width: 768px) {
    .nav-menu { position: fixed; left: -100%; top: 70px; flex-direction: column; background-color: var(--header-bg); width: 100%; text-align: center; transition: 0.3s; box-shadow: var(--shadow); padding: 2rem 0; }
    .nav-menu.active { left: 0; }
    .nav-item { margin: 1rem 0; }
    .hamburger { display: flex; }
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    .hero { padding: 2rem 0; }
    .hero-content h2 { font-size: 2rem; }
    .posts-grid { grid-template-columns: 1fr; }
    .modal-content { width: 95%; padding: 1.5rem; }
    .floating-btn { bottom: 20px; right: 20px; width: 56px; height: 56px; font-size: 22px; }
    .section-title { font-size: 1.8rem; }
}