:root {
    --primary-neon: #00ffcc;
    --secondary-neon: #ff00ff;
    --bg-gradient: linear-gradient(135deg, #0a0a0a, #1c2526);
}
[data-theme="purple"] {
    --primary-neon: #9900ff;
    --secondary-neon: #00ffcc;
    --bg-gradient: linear-gradient(135deg, #1c0a26, #0a0a0a);
}
body {
    font-family: 'Orbitron', sans-serif;
    background: var(--bg-gradient);
    color: var(--primary-neon);
    overflow-x: hidden;
    position: relative;
}
canvas#particle-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
}
.glitch {
    position: relative;
    animation: glitch 0.5s linear infinite;
}
.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    color: var(--secondary-neon);
}
.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--primary-neon);
    animation: glitch-top 1.5s linear infinite;
    clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
}
.glitch::after {
    left: -2px;
    text-shadow: 2px 0 var(--primary-neon);
    animation: glitch-bottom 2s linear infinite;
    clip-path: polygon(0 67%, 100% 67%, 100% 100%, 0 100%);
}
@keyframes glitch {
    2%, 64% { transform: translate(1px, 0); }
    4%, 60% { transform: translate(-1px, 0); }
    62% { transform: translate(0, 0); }
}
@keyframes glitch-top {
    2%, 64% { transform: translate(1px, -1px); }
    4%, 60% { transform: translate(-1px, 1px); }
    62% { transform: translate(0, 0); }
}
@keyframes glitch-bottom {
    2%, 64% { transform: translate(-1px, 0); }
    4%, 60% { transform: translate(1px, 0); }
    62% { transform: translate(0, 0); }
}
.neon-text {
    text-shadow: 0 0 5px var(--primary-neon), 0 0 10px var(--secondary-neon);
    animation: flicker 2s infinite alternate;
}
@keyframes flicker {
    0%, 18%, 22%, 25%, 53%, 57%, 100% { opacity: 1; }
    20%, 24%, 55% { opacity: 0.7; }
}
.fade-in {
    opacity: 0;
    transform: translateY(10px);
    animation: fadeIn 0.8s ease-out forwards;
}
@keyframes fadeIn {
    to { opacity: 1; transform: translateY(0); }
}
.neon-button {
    background: var(--primary-neon);
    color: #000;
    transition: all 0.3s;
    transform: translateZ(0);
}
.neon-button:hover {
    background: var(--secondary-neon);
    box-shadow: 0 0 10px var(--secondary-neon);
}
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    z-index: 100;
}
.modal-content {
    background: #1a1a1a;
    padding: 1.5rem;
    border: 2px solid var(--primary-neon);
    border-radius: 5px;
    text-align: center;
    animation: modalPop 0.5s ease-out;
}
@keyframes modalPop {
    0% { transform: scale(0.9); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}
.loader {
    border: 3px solid var(--primary-neon);
    border-top: 3px solid var(--secondary-neon);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1.2s linear infinite;
    margin: 0 auto;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
input, textarea {
    transition: border-color 0.3s, box-shadow 0.3s;
}
input:focus, textarea:focus {
    border-color: var(--secondary-neon);
    box-shadow: 0 0 8px var(--secondary-neon);
}
.card {
    background: #1a1a1a;
    border: 2px solid var(--primary-neon);
    transition: box-shadow 0.3s;
    transform: translateZ(0);
}
.card:hover {
    box-shadow: 0 0 10px var(--secondary-neon);
}
.marquee {
    white-space: nowrap;
    overflow: hidden;
    animation: marquee 15s linear infinite;
}
@keyframes marquee {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
}
.terminal {
    background: #0a0a0a;
    border: 2px solid var(--primary-neon);
    padding: 1rem;
    font-family: 'Roboto Mono', monospace;
    color: var(--primary-neon);
}
.terminal-input::before {
    content: '>';
    margin-right: 0.5rem;
}
.terminal-output {
    animation: typing 1.5s steps(30, end);
}
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}
header {
    background: rgba(0, 0, 0, 0.7);
    box-shadow: 0 0 8px var(--primary-neon);
}
@media (prefers-reduced-motion) {
    .glitch, .glitch::before, .glitch::after, .neon-text, .fade-in, .neon-button, .card, .marquee, .terminal-output {
        animation: none;
    }
}
.grid-overlay {
    background: linear-gradient(0deg, rgba(0, 255, 204, 0.1) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 255, 204, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
}