:root {
    --i6signal-padding: 24px;
    --i6signal-border-radius: 8px;
    --i6signal-border-color: #e0e0e0;
}

.i6signal-active .layout-middle {
    padding: 0 !important;
}

#i6signal {
    height: 100%;
}

.i6signal-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--background-color-light-3);
}

.i6signal-menu {
    background-color: var(--white-color);
    border-bottom: 1px solid var(--i6signal-border-color);
    padding: 0 var(--i6signal-padding);
    display: flex;
    flex-direction: row;
    overflow-x: auto;
}

.i6signal-menu a {
    display: block;
    color: var(--text-color-medium);
    text-decoration: none;
    padding: 16px 20px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    border-bottom: 3px solid transparent;
    text-align: center;
    white-space: nowrap;
}

.i6signal-menu a:hover {
    background-color: var(--background-color-light-2);
    color: var(--text-color);
}

.i6signal-menu a.active {
    font-weight: 500;
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

.i6signal-main {
    flex: 1;
    padding: var(--i6signal-padding);
    overflow-y: auto;
}

.i6signal-content-card {
    background-color: var(--white-color);
    border-radius: var(--i6signal-border-radius);
    border: 1px solid var(--i6signal-border-color);
    padding: var(--i6signal-padding);
}

.i6signal-content-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 24px;
}

.i6signal-content-text,
.i6signal-content-history {
    line-height: 1.7;
    color: var(--text-color);
}

.i6signal-content-text h1, .i6signal-content-history h1,
.i6signal-content-text h2, .i6signal-content-history h2,
.i6signal-content-text p, .i6signal-content-history p,
.i6signal-content-text ul, .i6signal-content-history ul,
.i6signal-content-text li, .i6signal-content-history li {
    margin-bottom: 1rem;
}

.i6signal-content-text h1, .i6signal-content-history h1 {
    font-size: 1.8rem;
    font-weight: 600;
}

.i6signal-content-text h2, .i6signal-content-history h2 {
    font-size: 1.4rem;
    font-weight: 500;
    margin-top: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--i6signal-border-color);
}

.i6signal-content-text ul, .i6signal-content-history ul {
    list-style: disc;
    padding-left: 20px;
}

.i6signal-content-text li, .i6signal-content-history li {
    margin-bottom: 0.5rem;
}

.i6signal-content-images {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.i6signal-content-images img {
    max-width: 100%;
    width: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--i6signal-border-radius);
    border: 1px solid var(--i6signal-border-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.i6signal-content-history {
    margin-top: var(--i6signal-padding); 
    padding-top: var(--i6signal-padding); 
    border-top: 1px solid var(--i6signal-border-color); 
    background-color: transparent; 
}