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

:root {
    --primary-color: #4a90e2;
    --bg-color: #f5f7fa;
    --text-color: #333;
    --border-color: #ddd;
    --error-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--border-color);
}

main {
    padding: 20px;
}

/* Post Form */
.post-form {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 20px;
}

#commentForm {
    margin-bottom: 10px;
}

.form-row {
    display: flex;
    gap: 10px;
    margin-bottom: 5px;
}

input[type="text"] {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 14px;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

button {
    background: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 20px;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
}

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

button:active {
    background: #e0e0e0;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.char-count {
    text-align: right;
    font-size: 12px;
    color: #666;
}

.info-text {
    margin-top: 15px;
    font-size: 12px;
    color: #666;
    line-height: 1.5;
}

.info-text p {
    margin: 2px 0;
}

.message {
    margin-top: 10px;
    padding: 10px;
    border-radius: 3px;
    display: none;
    font-size: 14px;
}

.message.show {
    display: block;
}

.message.error {
    background: #ffe6e6;
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.message.success {
    background: #e6ffe6;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.message.warning {
    background: #fff3e6;
    color: var(--warning-color);
    border: 1px solid var(--warning-color);
}

/* Comments List */
.loading {
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 14px;
}

.comments-list {
    display: flex;
    flex-direction: column;
}

.comment {
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    font-size: 14px;
}

.comment:last-child {
    border-bottom: none;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-size: 12px;
    color: #999;
}

.comment-id {
    font-family: monospace;
}

.comment-date {
    font-size: 12px;
}

.comment-message {
    word-wrap: break-word;
    line-height: 1.5;
}

.comment-message.censored {
    color: #999;
    cursor: pointer;
    text-decoration: underline;
    user-select: none;
}

.comment-message.censored:hover {
    color: var(--text-color);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #999;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    main {
        padding: 15px;
    }

    .form-row {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}