:root {
    --bg-color: #050505;
    --sony-blue: #0050FF;
    --electric-cyan: #00D6FF;
    --text-main: rgba(255, 255, 255, 0.98);
    --text-muted: rgba(255, 255, 255, 0.5);
    --nav-height: 56px;
}

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

body {
    font-family: 'Inter', -apple-system, system-ui, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 0; }

.glass {
    background: rgba(10, 10, 10, 0.75);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

#navbar {
    height: var(--nav-height);
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
                backdrop-filter 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
                border-bottom 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#navbar.scrolled {
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    height: 48px;
}

.gradient-text {
    background: linear-gradient(180deg, #FFFFFF 30%, rgba(255, 255, 255, 0.2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Technical Callout Labels - Standardized Engineering Specification */
.technical-callout {
    position: absolute;
    pointer-events: auto;
    
    /* Typography Spec: 12px Medium technical aesthetic */
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 12px;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.02em;
    color: var(--electric-cyan);
    text-transform: uppercase;
    
    /* Spacing Spec: Uniform sizing and padding */
    padding: 8px 12px;
    margin: 0;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    
    /* Layout: Precise center-point alignment */
    z-index: 50;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid rgba(0, 214, 255, 0.15);
    border-radius: 4px;
    transform: translate(-50%, -50%);
    
    /* Visual Consistency */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Normalize the indicator symbol for symmetry */
.technical-callout span {
    font-size: 13px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    margin-left: -2px;
}

.technical-callout:hover {
    border-color: var(--electric-cyan);
    background: rgba(0, 214, 255, 0.1);
    transform: translate(-50%, -50%) scale(1.03);
}

.scroll-trigger div { transition: all 1.5s cubic-bezier(0.19, 1, 0.22, 1); }
.scroll-active { opacity: 1 !important; transform: translateY(0) !important; }

.spec-item-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--electric-cyan);
    font-weight: 900;
    margin-bottom: 4px;
    opacity: 0.8;
}

.spec-item-value {
    font-size: 14px;
    color: #FFF;
    font-weight: 400;
    line-height: 1.6;
}

#spec-panel {
    transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.noise-bg {
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    animation: noise-move 0.2s infinite steps(1);
}

@keyframes noise-move {
    0% { transform: translate(0,0) }
    10% { transform: translate(-1%, -1%) }
    20% { transform: translate(1%, 1%) }
    100% { transform: translate(0,0) }
}