:root {
    --bg-black: #000000;
    --accent-purple: #bf00ff;
    --text-primary: #ffffff;
    --text-secondary: #8892b0;
    --border-dim: rgba(255, 255, 255, 0.1);
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-black);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
}

/* Animated Shadow Onion */
.shadow-onion-animated {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vw;
    height: 80vw;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Ccircle cx='50' cy='50' r='40' fill='none' stroke='white' stroke-width='0.5' opacity='0.05'/%3E%3Ccircle cx='50' cy='50' r='30' fill='none' stroke='white' stroke-width='0.5' opacity='0.05'/%3E%3Ccircle cx='50' cy='50' r='20' fill='none' stroke='white' stroke-width='0.5' opacity='0.05'/%3E%3Ccircle cx='50' cy='50' r='10' fill='none' stroke='white' stroke-width='0.5' opacity='0.05'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    z-index: -1;
    pointer-events: none;
    animation: rotatePulse 40s linear infinite;
}

@keyframes rotatePulse {
    0% {
        transform: translate(-50%, -50%) rotate(0deg) scale(1);
        opacity: 0.8;
    }

    50% {
        transform: translate(-50%, -50%) rotate(180deg) scale(1.1);
        opacity: 0.4;
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg) scale(1);
        opacity: 0.8;
    }
}

/* Side Telegram Button */
.side-tg-btn {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: right bottom;
    background: var(--accent-purple);
    color: #000;
    text-decoration: none;
    padding: 10px 25px;
    display: flex;
    align-items: center;
    gap: 15px;
    font-family: var(--font-mono);
    font-weight: 700;
    z-index: 2000;
    cursor: pointer;
}

/* Nav */
.minimal-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-dim);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
}

.status-box {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--accent-purple);
    padding: 4px 12px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-purple);
}

.dot {
    width: 6px;
    height: 6px;
    background: var(--accent-purple);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 1px;
}

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    border-bottom: 1px solid var(--border-dim);
}

#main-title {
    font-family: var(--font-mono);
    font-size: clamp(3rem, 12vw, 8rem);
    margin-bottom: 0.5rem;
    letter-spacing: -2px;
}

.hero-slogan {
    font-family: var(--font-mono);
    letter-spacing: 10px;
    color: var(--accent-purple);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.hero-divider {
    width: 80px;
    height: 1px;
    background: var(--accent-purple);
    margin: 0 auto 3rem;
}

.primary-download-btn {
    background: transparent;
    border: 2px solid var(--accent-purple);
    color: var(--accent-purple);
    font-family: var(--font-mono);
    padding: 1.2rem 2.5rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 2px;
}

.primary-download-btn:hover {
    background: var(--accent-purple);
    color: #000;
    box-shadow: 0 0 20px rgba(191, 0, 255, 0.4);
}

/* Physics Stage */
.physics-arena {
    height: 100vh;
    position: relative;
    overflow: hidden;
    padding: 100px 5%;
}

.section-title {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--accent-purple);
    letter-spacing: 4px;
    border-bottom: 1px solid var(--border-dim);
    padding-bottom: 1rem;
    margin-bottom: 50px;
}

#thread-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.defense-node {
    position: absolute;
    width: 280px;
    background: #000;
    border: 1px solid var(--border-dim);
    padding: 2rem;
    cursor: grab;
    z-index: 10;
    user-select: none;
}

.defense-node:active {
    cursor: grabbing;
    border-color: var(--accent-purple);
}

.node-header {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-purple);
    margin-bottom: 1.5rem;
}

.node-body ul {
    list-style: none;
}

.node-body li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    padding-left: 10px;
    border-left: 1px solid var(--border-dim);
}

/* Footer */
.footer {
    padding: 4rem 10%;
    border-top: 1px solid var(--border-dim);
}

.footer-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

.brand {
    font-family: var(--font-mono);
    color: var(--accent-purple);
    font-weight: 700;
}

.author a {
    color: var(--accent-purple);
    text-decoration: none;
}
/* Modal Styles */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    z-index: 3000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(10px);
}

.modal-content {
    background: #000;
    border: 1px solid var(--accent-purple);
    width: 500px;
    padding: 3rem;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-dim);
    padding-bottom: 1rem;
}

.modal-header h3 { font-family: var(--font-mono); font-size: 1rem; color: var(--accent-purple); letter-spacing: 3px; }

#modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    cursor: pointer;
}

.modal-options {
    display: grid;
    gap: 1.5rem;
}

.modal-opt {
    border: 1px solid var(--border-dim);
    padding: 1.5rem;
    text-decoration: none;
    display: block;
    transition: all 0.2s;
}

.modal-opt:hover {
    border-color: var(--accent-purple);
    background: rgba(191, 0, 255, 0.05);
}

.opt-title { 
    display: block; 
    font-family: var(--font-mono); 
    font-weight: 700; 
    color: var(--accent-purple); 
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.opt-desc { font-size: 0.8rem; color: var(--text-secondary); }