/* Layout */
body {
    display: flex;
    min-height: 100vh;
    background:
        linear-gradient(rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.88)),
        url("../assets/ups-watermark.png") center center / 520px auto no-repeat fixed,
        var(--app-background);
}

.sidebar {
    width: 250px;
    background-color: #f3f6f9;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 16px 14px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--ups-blue);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.sidebar-header h2 {
    margin: 0;
    font-size: 17px;
    color: #ffffff;
    font-weight: 800;
    line-height: 1.2;
}

.sidebar-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px 0;
}

.nav-list {
    list-style: none;
    margin: 0;
}

.nav-group-title {
    display: block;
    padding: 12px 20px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0;
}

.nav-group-title.section-title {
    margin: 12px 14px 8px;
    padding: 12px 14px;
    color: #ffffff;
    background-color: var(--ups-blue);
    border-radius: 2px;
    font-size: 15px;
    text-transform: uppercase;
    box-shadow: inset 0 -2px 0 rgba(242, 197, 0, 0.95);
}

button.nav-group-title.borderless {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}
button.nav-group-title.borderless:hover {
    background-color: var(--app-background);
}

.subnav-list {
    list-style: none;
    margin: 0;
}

.nav-link {
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 20px 12px 22px;
    background: none;
    border: none;
    font-size: 14px;
    color: #183b5b;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.2s;
}

.nav-link:hover, .nav-link:focus {
    background-color: #e7edf2;
    outline: none;
}

.nav-link.active {
    font-weight: 700;
    color: var(--ups-blue);
    background-color: #dfe6eb;
    border-left: 4px solid var(--ups-blue);
    padding-left: 18px;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot.unknown { background-color: var(--text-secondary); }
.dot.online { background-color: var(--success-color); }
.dot.offline { background-color: var(--error-color); }

.version-info, .model-loaded-info {
    margin-bottom: 4px;
}

.main-content {
    margin-left: 250px;
    flex-grow: 1;
    padding: 0 38px 40px;
    max-width: none;
    min-height: 100vh;
    position: relative;
    background: transparent;
}

.app-topbar {
    min-height: 76px;
    margin: 0 -38px 30px;
    padding: 14px 38px 12px;
    background-color: rgba(255, 255, 255, 0.96);
    border-bottom: 3px solid var(--ups-yellow);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.app-topbar h1 {
    margin: 0;
    font-size: 40px;
    line-height: 1.1;
}

.logo-reload {
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
}

.sidebar-logo {
    width: 100%;
    padding: 6px 8px;
    background-color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
}

.logo-reload:hover {
    opacity: 0.82;
}

.ups-logo {
    display: block;
    width: 100%;
    max-width: 185px;
    max-height: 54px;
    object-fit: contain;
}

.header-section {
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.d-mobile {
    display: none;
}