:root {
    --bg-main: #0a0b0d;        
    --bg-card: #121418;        
    --border-color: #22252a;    
    --text-main: #f1f5f9;       
    --text-muted: #64748b;     
    --accent: #ffffff;         
    --purple-accent: #7c3aed;  
    --purple-glow: rgba(124, 58, 237, 0.15);
}

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

html {
    transition: filter 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    scrollbar-gutter: stable;
    scrollbar-color: #2a2d35 var(--bg-main);
    scrollbar-width: thin;
}

/* Стилізована смуга прокрутки (Chromium) */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: #2a2d35;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--purple-accent);
}

html.system-overload {
    filter: invert(1) hue-rotate(180deg) contrast(1.2) !important;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

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

.container, .rules-layout {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* АНІМОВАНА ЖОВТО-ЧОРНА СТРІЧКА РОЗРОБКИ */
.dev-banner {
    background: repeating-linear-gradient(
        -45deg,
        #eab308,
        #eab308 20px,
        #1e1b4b 20px,
        #1e1b4b 40px
    );
    background-size: 56px 56px;
    animation: devStripes 2s linear infinite;
    height: 36px;
    display: flex;
    align-items: center;
    overflow: hidden;
    position: relative;
    border-bottom: 2px solid #000;
    z-index: 101;
}

.dev-banner-text {
    white-space: nowrap;
    font-weight: 800;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    color: #ffffff;
    text-shadow: 2px 2px 0px #000000, -2px -2px 0px #000000, 2px -2px 0px #000000, -2px 2px 0px #000000;
    animation: devMarquee 25s linear infinite;
    padding-left: 100%;
}

@keyframes devStripes {
    from { background-position: 0 0; }
    to { background-position: 56px 0; }
}

@keyframes devMarquee {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-100%, 0, 0); }
}

/* Навігація */
header {
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(10, 11, 13, 0.85);
    backdrop-filter: blur(12px); 
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--purple-accent), transparent);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    height: 70px;
    position: relative;
}

.logo {
    position: absolute;
    left: 2rem;
    top: 60%;
    transform: translateY(-50%);
    z-index: 10;
    perspective: 1000px;
    display: inline-flex;
    height: 105px;
    width: auto;
}

.logo a {
    display: inline-flex;
    align-items: center;
    height: 100%;
    width: auto;
    background: transparent !important;
    text-decoration: none;
}

.logo img {
    height: 100%;
    width: auto;
    display: block;
    background: transparent !important;
    border: none;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    filter: drop-shadow(0 0 0 transparent);
}

.logo:hover img {
    transform: scale(1.02);
    filter: drop-shadow(0 0 18px rgba(124, 58, 237, 0.75));
}

.logo .logo-big { display: block !important; }
.logo .logo-small { display: none !important; }

@keyframes logoCrazySpin {
    from { transform: rotateY(0deg) scale(1.1); }
    to { transform: rotateY(720deg) scale(1.1); }
}

html.system-overload .logo img {
    animation: logoCrazySpin 2s cubic-bezier(0.16, 1, 0.3, 1) infinite alternate;
    filter: drop-shadow(0 0 25px var(--purple-accent)) !important;
}

@keyframes gearFallOnly {
    0% { transform: translateY(-50px); opacity: 0; }
    10% { opacity: 0.9; }
    90% { opacity: 0.9; }
    100% { transform: translateY(105vh); opacity: 0; }
}

@keyframes gearRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.gear-container {
    position: fixed;
    top: -50px;
    pointer-events: none;
    z-index: 9999;
    animation: gearFallOnly linear forwards;
}

.falling-gear {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    animation: gearRotate linear infinite;
    filter: drop-shadow(0 0 6px rgba(124, 58, 237, 0.6));
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.4rem 0;
    transition: color 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.nav-indicator {
    position: absolute;
    bottom: -4px;
    height: 3px;
    background: linear-gradient(90deg, var(--purple-accent), #a78bfa);
    border-radius: 4px;
    pointer-events: none;
    box-shadow: 0 0 10px var(--purple-accent), 0 0 20px rgba(124, 58, 237, 0.4);
    transition: left 0.35s cubic-bezier(0.38, 1.4, 0.6, 1), width 0.25s ease-in-out;
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

.btn {
    display: inline-block;
    padding: 0.6rem 1.3rem;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
    text-decoration: none;
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--purple-accent);
    z-index: -1;
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn:hover {
    border-color: var(--purple-accent);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.3);
    color: #fff;
}

.btn:hover::before { transform: scaleY(1); }

@keyframes pulseGlow {
    0% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(124, 58, 237, 0); }
    100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0); }
}

.btn-primary {
    background: linear-gradient(135deg, var(--purple-accent), #6d28d9);
    border: none;
    color: #ffffff;
    font-weight: 600;
    animation: pulseGlow 2s infinite;
}

.btn-primary::before { display: none; }
.btn-primary:hover {
    background: linear-gradient(135deg, #6d28d9, #5b21b6);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
    color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    flex: 1;
    width: 100%;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    border-radius: 12px; 
    position: relative;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease, box-shadow 0.4s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(124, 58, 237, 0.35);
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.06);
}

.ip-box {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.8rem 1.6rem;
    margin-top: 1.5rem;
    cursor: pointer;
    border-radius: 8px;
    font-family: monospace;
    font-size: 1rem;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.ip-box:hover {
    border-color: var(--purple-accent); 
    background-color: rgba(124, 58, 237, 0.02);
    transform: scale(1.02);
}

.ip-box:active { transform: scale(0.98); }

.rules-layout {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    flex: 1;
    width: 100%;
}

.rules-sidebar {
    width: 280px;
    border-right: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    position: sticky;
    top: 107px; /* Спільний відступ з банером */
    height: calc(100vh - 107px);
    overflow-y: auto;
}

.sidebar-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-main); 
    font-weight: 700;
    margin-bottom: 0.75rem;
    margin-top: 2rem;
}

.sidebar-category:first-child { margin-top: 0; }
.sidebar-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    border-left: 2px solid transparent;
    transition: all 0.2s ease;
}

.sidebar-links a:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.02);
    padding-left: 0.75rem;
}

.sidebar-links a.active {
    font-weight: 600;
    color: var(--purple-accent); 
    background-color: rgba(124, 58, 237, 0.05);
    border-left-color: var(--purple-accent);
    padding-left: 0.75rem;
}

.rules-content {
    flex: 1;
    padding: 2.5rem 4rem;
    overflow-y: auto;
}

.rules-section { display: none; }
.rules-section.active {
    display: block;
    animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards; 
}

.rules-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.rules-content h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 0.5rem; }
.rules-content h3 {
    margin-top: 2.5rem;
    margin-bottom: 1.2rem;
    color: var(--text-main);
    border-left: 3px solid var(--purple-accent); 
    padding-left: 0.75rem;
    font-size: 1.25rem;
}

.rule-block {
    display: flex;
    gap: 1.2rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.2rem;
    margin-bottom: 0.75rem;
    border-radius: 8px;
    border-left: 2px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.rule-block:hover {
    border-left-color: var(--purple-accent); 
    background-color: rgba(124, 58, 237, 0.01);
    transform: translateX(4px); 
}

.rule-number { font-weight: 700; color: var(--purple-accent); min-width: 45px; }

.policy-content {
    max-width: 800px;
    margin: 0 auto;
}

.policy-content h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 0.5rem; }
.policy-content h2 { font-size: 1.3rem; font-weight: 700; margin-top: 2rem; margin-bottom: 0.8rem; color: var(--text-main); }
.policy-content p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 1rem; line-height: 1.6; }

footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 2.5rem 2rem;
    text-align: center;
    background-color: var(--bg-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
}

.footer-socials {
    display: flex;
    gap: 1.8rem;
}

.footer-socials a {
    color: var(--text-muted);
    font-size: 1.6rem;
    transition: color 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-socials a:hover {
    color: var(--purple-accent);
    transform: translateY(-3px);
}

footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-main);
}

@media (max-width: 768px) {
    nav { display: flex; height: auto; padding: 0.75rem 1.5rem; justify-content: space-between; }
    .logo { position: static; transform: none; height: 50px; width: auto; }
    .logo:hover a { transform: none !important; }
    .menu-toggle { display: block; }
    .logo .logo-big { display: none !important; }
    .logo .logo-small { display: block !important; height: 40px; }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-main);
        border-bottom: 1px solid var(--border-color);
        padding: 1.5rem;
        gap: 1.2rem;
        left: 0;
        transform: none;
    }

    .nav-links.open { display: flex; }
    .nav-links a { width: 100%; text-align: center; padding: 0.6rem; }
    .nav-indicator { display: none !important; }
    .container { padding: 3rem 1.5rem; }
    h1 { font-size: 2.5rem !important; }
    .grid { grid-template-columns: 1fr; gap: 1.2rem; }
    .card:hover { transform: translateY(-2px); }
    .rules-layout { flex-direction: column; }

    .rules-sidebar {
        width: 100%; height: auto; position: relative; top: 0;
        border-right: none; border-bottom: 1px solid var(--border-color);
        padding: 1rem 1.5rem; display: flex; overflow-x: auto;
        white-space: nowrap; gap: 1.5rem; scrollbar-width: none;
    }
    .rules-sidebar::-webkit-scrollbar { display: none; }
    .sidebar-category { margin: 0; display: flex; align-items: center; font-size: 0.75rem; }
    .sidebar-links { flex-direction: row; gap: 1rem; }
    .sidebar-links a { padding: 0.5rem 0.75rem; background: transparent !important; box-shadow: none !important; }
    .sidebar-links a.active { color: var(--purple-accent); }
    .rules-content { padding: 2rem 1.5rem; }
    .rule-block { flex-direction: column; gap: 0.4rem; }
    .rule-block:hover { transform: none; }
}