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

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    overflow: visible;
    width: 100vw;
    height: 100vh;
}

/* IBM Carbon-style Header */
.carbon-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background-color: #161616;
    z-index: 1000;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 16px;
    max-width: 100%;
}

.header-title {
    color: #f4f4f4;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.16px;
    line-height: 18px;
    margin: 0;
}

.header-nav {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-link {
    color: #f4f4f4;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    padding: 11px 16px;
    border-bottom: 3px solid transparent;
    transition: all 0.11s cubic-bezier(0.2, 0, 0.38, 0.9);
    display: inline-block;
    line-height: 18px;
}

.nav-link:hover {
    background-color: #262626;
    border-bottom-color: #0f62fe;
}

.nav-link:active {
    background-color: #393939;
}

/* Main Content */
.main-content {
    position: relative;
    width: 100vw;
    height: 100vh;
    padding-top: 48px;
}

/* Background */
.background-container {
    position: absolute;
    top: 48px;
    left: 0;
    width: 100%;
    height: calc(100vh - 48px);
    overflow: visible;
    z-index: 1;
}

.background-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 3D Model Container */
.model-container {
    position: absolute;
    top: 48px;
    left: 0;
    width: 100%;
    height: calc(100vh - 48px);
    z-index: 10;
    overflow: visible;
    pointer-events: none;
}

model-viewer {
    width: 100%;
    height: 100%;
    background-color: transparent;
    --poster-color: transparent;
    overflow: visible;
    pointer-events: auto;
}

/* Loading Spinner */
.model-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: #0f62fe;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-title {
        font-size: 12px;
    }

    .nav-link {
        font-size: 12px;
        padding: 11px 12px;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 12px;
    }

    .header-title {
        font-size: 11px;
    }

    .nav-link {
        font-size: 11px;
        padding: 11px 8px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    model-viewer {
        /* Better touch interaction on mobile */
        touch-action: pan-y;
    }
}

/* Made with Bob */