.projects-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 1024px) {
    .projects-layout {
        grid-template-columns: 1fr;
    }
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    top: 1rem;
}

.auth-card,
.projects-card {
    padding: 1.5rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.input-field {
    padding: 0.625rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    outline: none;
}

.input-field:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.status-msg {
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.status-error {
    color: var(--error);
}

.status-success {
    color: var(--success);
}

/* Project List */
.project-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.project-item {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    background: var(--surface);
}

.project-item:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.project-item.active {
    border-color: var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 0 0 2px var(--primary);
}

.project-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.project-item p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Thread Annotation Area */
.annotation-card {
    padding: 2rem;
    min-height: 400px;
}

.thread-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.main-post-box {
    background: var(--primary-soft);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin: 1rem 0;
    font-size: 1.125rem;
    line-height: 1.6;
}

.question-block {
    margin: 1.5rem 0;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.question-text {
    font-weight: 600;
    margin-bottom: 1rem;
    display: block;
}

.options-row {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.radio-opt {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9375rem;
}

/* Replies section */
.replies-section {
    margin: 2rem 0;
}

.reply-card {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.625rem;
    margin-bottom: 1rem;
    background: #f8fafc;
}

.reply-text {
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

.nav-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.guidelines-card {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: #f1f5f9;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.guidelines-content {
    font-size: 0.875rem;
    line-height: 1.6;
    color: #334155;
}

.guidelines-section {
    margin-bottom: 1rem;
}

.guidelines-section:last-child {
    margin-bottom: 0;
}

.guidelines-section h4 {
    color: var(--text-main);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.guidelines-section ul,
.guidelines-section ol {
    padding-left: 1.25rem;
    margin-top: 0.5rem;
}

.guidelines-section li {
    margin-bottom: 0.25rem;
}

.guidelines-section li strong {
    color: var(--text-main);
}