:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --text-color: #333;
    --light-gray: #f5f6fa;
    --border-color: #dcdde1;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --warning-color: #f1c40f;
}

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

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

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    margin-bottom: 1rem;
}

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

nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: var(--secondary-color);
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Alertas */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}

.alert-success {
    background-color: var(--success-color);
    color: white;
}

.alert-error {
    background-color: var(--error-color);
    color: white;
}

.alert-warning {
    background-color: var(--warning-color);
    color: var(--text-color);
}

/* Formulários */
.auth-form {
    max-width: 400px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--primary-color);
}

/* Posts */
.posts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.post-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.post-card:hover {
    transform: translateY(-5px);
}

.post-card h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.post-meta {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
}

.post-tags {
    margin-top: 1rem;
}

.tag {
    background: var(--secondary-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-right: 0.5rem;
}

/* Área Administrativa */
.admin-posts {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.post-item {
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.post-item:last-child {
    border-bottom: none;
}

.post-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    color: white;
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
}

.btn-view {
    background-color: var(--secondary-color);
}

.btn-edit {
    background-color: var(--warning-color);
    color: var(--text-color);
}

.btn-delete {
    background-color: var(--error-color);
}

.delete-form {
    display: inline;
}

/* Comentários */
.comments {
    margin-top: 3rem;
}

.comment {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.comment-form {
    margin-top: 2rem;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

footer {
    text-align: center;
    padding: 2rem;
    background: var(--primary-color);
    color: white;
    margin-top: 3rem;
}