:root {
    --nm-bg: #e8ecf1;
    --nm-shadow-dark: #bcc5cf;
    --nm-shadow-light: #f5f8fb;
    --nm-radius: 24px;
    --color-text-primary: #4b5563;
    --color-text-secondary: #6b7280;
    --color-text-emphasis: #374151;
    --color-observatory: #2a2d32;
    --color-hud-blue: #7dd3fc;
    --color-hud-cyan: #a5f3fc;
    --color-hud-pink: #fda4af;
    --color-hud-label: #9ca3af;
    --color-depth-shadow: #1e293b;
    --color-vector: #9ca3af;
    --color-ring-muted: #a8b2bc;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--nm-bg);
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.85;
    overflow-x: hidden;
}

.nm-raised {
    background: var(--nm-bg);
    border-radius: var(--nm-radius);
    box-shadow: 8px 8px 16px var(--nm-shadow-dark),
                -8px -8px 16px var(--nm-shadow-light);
}

.nm-inset {
    background: var(--nm-bg);
    border-radius: var(--nm-radius);
    box-shadow: inset 6px 6px 12px var(--nm-shadow-dark),
                inset -6px -6px 12px var(--nm-shadow-light);
}

.nm-inset-dark {
    background: var(--color-observatory);
    border-radius: var(--nm-radius);
    box-shadow: inset 6px 6px 12px rgba(0,0,0,0.4),
                inset -6px -6px 12px rgba(60,65,75,0.3);
}

/* Section Indicator */
#section-indicator {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    animation: indicatorPulse 4s ease-in-out infinite;
}

#indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-hud-blue);
}

@keyframes indicatorPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.6; }
}

/* Radial Menu */
#radial-menu {
    position: fixed;
    z-index: 200;
    pointer-events: none;
}

#radial-menu.radial-menu-hidden .radial-item {
    opacity: 0;
    transform: translate(0, 0);
    pointer-events: none;
}

#radial-menu.radial-menu-visible {
    pointer-events: auto;
}

.radial-item {
    position: absolute;
    background: var(--nm-bg);
    border: none;
    border-radius: 20px;
    padding: 8px 16px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    cursor: pointer;
    box-shadow: 4px 4px 8px var(--nm-shadow-dark),
                -4px -4px 8px var(--nm-shadow-light);
    transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1),
                opacity 400ms ease-out;
    white-space: nowrap;
    transform: translate(-50%, -50%);
}

.radial-item:hover {
    color: var(--color-hud-blue);
}

/* Threshold Section */
.threshold {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.domain-name {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: clamp(3rem, 7vw, 6rem);
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    text-shadow: 2px 2px 4px var(--nm-shadow-dark),
                 -2px -2px 4px var(--nm-shadow-light);
    opacity: 0;
    transform: scale(0.95);
    animation: domainReveal 1200ms cubic-bezier(0.16, 1, 0.3, 1) 600ms forwards;
}

@keyframes domainReveal {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.orbital-ring {
    margin-top: 40px;
    opacity: 0;
    animation: ringFadeIn 1200ms ease-out 800ms forwards, orbitalSpin 120s linear 800ms infinite;
}

@keyframes ringFadeIn {
    to { opacity: 1; }
}

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

/* Drift Zone */
.drift-zone {
    padding: 120px 5vw 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    position: relative;
}

.drift-panel {
    max-width: 520px;
    padding: 40px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 800ms ease-out, transform 800ms ease-out;
    margin-bottom: 100px;
}

.drift-panel.wide {
    max-width: 600px;
}

.drift-panel.small {
    max-width: 320px;
}

.drift-panel.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Alternate panel positions for organic feel */
.drift-panel:nth-child(1) { align-self: flex-start; margin-left: 8vw; }
.drift-panel:nth-child(2) { align-self: flex-end; margin-right: 12vw; }
.drift-panel:nth-child(3) { align-self: center; }
.drift-panel:nth-child(4) { align-self: flex-start; margin-left: 15vw; }
.drift-panel:nth-child(5) { align-self: flex-end; margin-right: 8vw; }
.drift-panel:nth-child(6) { align-self: center; margin-bottom: 40px; }

.drift-panel h2 {
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
    letter-spacing: 0.04em;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.drift-panel p {
    max-width: 38em;
    font-weight: 300;
    line-height: 1.85;
    color: var(--color-text-secondary);
}

.panel-illustration {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.vector-art {
    display: block;
}

/* Transition Ring */
.transition-ring-container {
    display: flex;
    justify-content: center;
    padding: 40px 0 60px;
}

.transition-ring {
    opacity: 0.3;
    animation: transitionPulse 6s ease-in-out infinite;
}

@keyframes transitionPulse {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.5; }
}

/* Observatory Section */
.observatory {
    background: var(--color-observatory);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    padding: 80px 5vw;
}

.observatory-inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.observatory-title {
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
    letter-spacing: 0.04em;
    color: var(--color-hud-label);
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 800ms ease-out, transform 800ms ease-out;
}

.observatory-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.gauges-container {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 80px;
}

.gauge-well {
    width: 200px;
    height: 240px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 800ms ease-out, transform 800ms ease-out;
}

.gauge-well.visible {
    opacity: 1;
    transform: translateY(0);
}

.gauge-svg {
    display: block;
    margin-bottom: 12px;
}

.gauge-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-hud-label);
}

.gauge-value {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    color: var(--color-hud-blue);
    margin-top: 4px;
}

/* Orrery */
.orrery {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
}

.ring-1 {
    animation: orbitalSpin 120s linear infinite;
    transform-origin: 200px 200px;
}

.ring-2 {
    animation: orbitalSpinReverse 90s linear infinite;
    transform-origin: 200px 200px;
}

.ring-3 {
    animation: orbitalSpin 180s linear infinite;
    transform-origin: 200px 200px;
}

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

/* Particle Canvas */
#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Return Section */
.return-section {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 5vw;
}

.return-well {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 60px 80px;
    max-width: 500px;
}

.return-name {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    text-shadow: 2px 2px 4px var(--nm-shadow-dark),
                 -2px -2px 4px var(--nm-shadow-light);
}

.return-ring {
    margin: 24px 0;
    opacity: 0.3;
}

.return-text {
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 300;
    font-size: 1rem;
    color: var(--color-hud-label);
    text-align: center;
    letter-spacing: 0.02em;
}

/* Responsive */
@media (max-width: 768px) {
    .drift-panel:nth-child(n) {
        align-self: center;
        margin-left: 5vw;
        margin-right: 5vw;
    }
    .gauges-container {
        gap: 24px;
    }
    .return-well {
        padding: 40px;
    }
    .orrery-svg {
        width: 280px;
        height: 280px;
    }
}