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

:root {
    --bg-void: #0a0a0f;
    --grid-inactive: #14141f;
    --gradient-violet: #7b2ff7;
    --gradient-cyan: #00d4ff;
    --gradient-magenta: #ff2d7b;
    --gradient-lime: #b8ff3a;
    --text-primary: #f0f0f5;
    --text-secondary: #8a8aa0;
    --highlight-amber: #ffaa00;
    --gradient-hue: 270;
}

html, body {
    width: 100%;
    height: 100%;
    background-color: var(--bg-void);
    color: var(--text-primary);
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.9rem, 1.6vw, 1.1rem);
    line-height: 1.65;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}

body {
    position: relative;
}

/* Grid Container */
.grid-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(24, 1fr);
    gap: 2px;
    padding: 2px;
    pointer-events: none;
    z-index: 0;
}

.grid-cell {
    width: 100%;
    height: 100%;
    background-color: var(--grid-inactive);
    border-radius: 1px;
    will-change: opacity, background-color;
    contain: strict;
}

/* Grid Overlay - rotated moire pattern */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.3;
}

/* Move Instruction */
.move-instruction {
    position: fixed;
    bottom: 50%;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(0.65rem, 1vw, 0.8rem);
    letter-spacing: 0.05em;
    opacity: 0.6;
    z-index: 5;
    pointer-events: none;
    animation: pulse-opacity 1.5s ease-in-out infinite;
}

@keyframes pulse-opacity {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* Hero Section */
#hero-grid-letters {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    pointer-events: none;
    display: none;
}

#domain-title {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    z-index: 4;
    opacity: 0;
    pointer-events: none;
}

/* Content Panels */
.content-panels {
    position: relative;
    z-index: 2;
    min-height: 400vh;
    padding: 0;
}

.content-panel {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(4px);
    border: 1px solid;
    border-color: hsl(var(--gradient-hue), 85%, 60%);
    border-radius: 2px;
    padding: 2rem;
    opacity: 0;
    will-change: opacity, transform;
    transition: border-color 0.3s ease;
}

.panel-content {
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.9rem, 1.6vw, 1.1rem);
    line-height: 1.65;
    letter-spacing: 0.02em;
    color: var(--text-primary);
}

.panel-1 {
    top: 5vh;
    width: 70%;
    max-width: 600px;
    grid-column: 3 / 14;
}

.panel-2 {
    top: 120vh;
    width: 60%;
    max-width: 500px;
    grid-column: 16 / 24;
}

.panel-3 {
    top: 220vh;
    width: 55%;
    max-width: 450px;
    grid-column: 2 / 12;
}

.panel-4 {
    top: 320vh;
    width: 50%;
    max-width: 400px;
    left: 50%;
    transform: translateX(-50%);
}

.terminal-prompt {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(0.8rem, 1.2vw, 0.95rem);
    letter-spacing: 0.05em;
    color: var(--gradient-lime);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes gridReveal {
    from {
        opacity: 0;
    }
    to {
        opacity: 0.3;
    }
}

@keyframes heroReveal {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .panel-1, .panel-2, .panel-3, .panel-4 {
        width: 90%;
    }

    #domain-title {
        font-size: clamp(2rem, 8vw, 4rem);
    }
}

/* Utility classes */
.visible {
    opacity: 1 !important;
}

.grid-cell.active {
    opacity: 1;
}

.pulse-wave {
    animation: pulseRadial 0.8s ease-out forwards;
}

@keyframes pulseRadial {
    0% {
        opacity: 1;
        transform: scale(0);
    }
    100% {
        opacity: 0;
        transform: scale(1);
    }
}