body {
    margin: 0;
    overflow: hidden;
    background-color: #050505;
    font-family: 'Segoe UI', sans-serif;
}

#canvas-container {
    width: 100vw;
    height: 100vh;
}

/* Glassmorphism UI */
.glass-panel {
    background: rgba(20, 20, 35, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    border-radius: 12px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.5);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.8);
}

/* Info panel styles */
.info-panel {
    position: absolute;
    pointer-events: auto;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 100;
    max-width: 320px;
    max-height: 400px;
    overflow-y: auto;
}

.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.fade-out {
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
}

/* Language select dropdown options: improve contrast in popup */
#lang-select {
    color: #e5e7eb;
}

#lang-select option {
    background-color: rgba(15, 23, 42, 0.98); /* slate-900 nearly opaque */
    color: #f9fafb; /* very light text */
}

/* Custom tooltip for model detail text */
.custom-tooltip {
    position: fixed;
    z-index: 1200;
    max-width: min(460px, calc(100vw - 24px));
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid rgba(56, 189, 248, 0.35);
    background: rgba(10, 18, 30, 0.94);
    color: #e5f7ff;
    font-size: 12px;
    line-height: 1.5;
    letter-spacing: 0.01em;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(8, 145, 178, 0.12) inset;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    white-space: normal;
    word-break: break-word;
    pointer-events: none;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.14s ease, transform 0.14s ease;
}

.custom-tooltip.is-visible {
    opacity: 1;
    transform: translateY(0);
}