:root {
    --dark-bg: #000000;
    --darker-bg: #0a0a0a;
    --neon-green: #00cc00;
    --neon-green-light: #00ff00;
    --text-light: #e0ffe0;
    --text-dark: #0d1b0d;
    --border-color: #009900;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --social-bg: #333;
    --steam-color: #031d7c;
    --telegram-color: #1da1f2;
    --github-color: #333;
    --neon-green: #00ffaa;
    --neon-blue: #00eeff;
    --neon-purple: #cc00ff;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: var(--dark-bg);
    color: var(--text-light);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}
.main-grid-container {
    display: grid;
    grid-template-areas:
        "header"
        "main"
        "footer";
    min-height: 100vh; 
}

header {
    grid-area: header;
    background-color: var(--darker-bg);
    padding: 0.5rem 1rem;
    position: fixed; 
    top: 0;
    left: 0; 
    right: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--neon-green);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: height 0.3s ease;
    height: 50px;
}

header.menu-open {
    height: auto; 
    min-height: 100px; 
}

header h1 {
    margin: 0;
    color: var(--neon-green-light);
    text-align: center;
    text-shadow: 0 0 5px var(--neon-green);
    /* На мобильных центрируем заголовок */
    flex-grow: 1;
    text-align: left; /* Оставляем слева на десктопе */
    margin-left: 1rem;
    font-size: 1.2rem;
}

nav {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-right: 1rem;
}

#burger-toggle {
    display: none;
}

.burger-menu {
    display: none; /* Сначала скрыт */
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.burger-menu span {
    width: 25px;
    height: 3px;
    background-color: var(--neon-green-light);
    margin: 3px 0;
    transition: 0.3s;
    position: relative;
    border-radius: 2px;
}

.burger-menu span:nth-child(2)::before,
.burger-menu span:nth-child(2)::after {
    content: '';
    position: absolute;
    left: 0;
    width: 25px;
    height: 3px;
    background-color: var(--neon-green-light);
    transition: 0.3s;
    border-radius: 2px;
}

.burger-menu span:nth-child(2)::before {
    top: -8px;
}

.burger-menu span:nth-child(2)::after {
    bottom: -8px;
}

#burger-toggle:checked + .burger-menu span:nth-child(2) {
    background-color: transparent;
}

#burger-toggle:checked + .burger-menu span:nth-child(2)::before {
    transform: rotate(45deg) translate(5px, 5px);
}

#burger-toggle:checked + .burger-menu span:nth-child(2)::after {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-menu {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex; /* Десктопное меню - flex */
    justify-content: center;
}

.nav-menu li {
    margin: 0 0.5rem;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
    position: relative;
    font-size: 0.9rem;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--neon-green);
    transition: width 0.3s ease, left 0.3s ease;
}

.nav-menu a:hover::after {
    width: 80%;
    left: 10%;
}

.nav-menu a:link, .nav-menu a:visited {
    color: var(--text-light);
}

.nav-menu a:hover {
    background-color: var(--neon-green);
    color: var(--darker-bg);
    text-shadow: 0 0 5px var(--darker-bg);
}

.nav-menu a:active {
    background-color: var(--border-color);
}

/*уведомления*/
.notification-container {
    position: relative;
    margin-right: 1rem;
}

.notification-bell {
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
    position: relative;
}

.notification-bell:hover {
    transform: scale(1.1);
}

/* анимация для уведомлений */
.notification-bell::after {
    content: '';
    position: absolute;
    top: 0;
    right: -5px;
    width: 8px;
    height: 8px;
    background-color: var(--neon-green);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.notification-bell:hover::after {
    opacity: 1;
}

.notification-list {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--darker-bg);
    border: 1px solid var(--neon-green);
    border-radius: 8px;
    padding: 0.5rem 0;
    list-style-type: none;
    width: 250px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 1001;
}

.notification-container:hover .notification-list {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.notification-list li {
    margin: 0;
}

.notification-list a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-light);
    text-decoration: none;
    transition: background-color 0.3s;
}

.notification-list a:hover {
    background-color: var(--neon-green);
    color: var(--darker-bg);
}

main {
    grid-area: main;
    /* Добавляем padding-top, чтобы контент не скрывался под фиксированным header */
    padding-top: 60px; /* Высота header + немного отступа */
    padding: 60px 2rem 2rem 2rem; /* top, right, bottom, left */
    /* Убираем прежний margin-top */
    /* margin-top: 50px; */
}
 
section {
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  border-radius: 16px;
  background: rgba(0, 10, 25, 0.6);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  border: 1px solid rgba(0, 255, 170, 0.2);
}

section:hover {
  transform: translateY(-5px);
  box-shadow: 
    0 10px 30px rgba(0, 238, 255, 0.2),
    inset 0 0 15px rgba(0, 255, 170, 0.1);
}

section::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--neon-green), var(--neon-purple), transparent);
  animation: shine 3s infinite;
}

@keyframes shine {
  to { left: 100%; }
}

/* стили для "полезные ресурсы" */
#resources {
    background-color: var(--text-dark);
    border: 2px solid var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
    padding: 1.5rem;
}

#resources h2 {
    text-align: center;
    border-bottom: 2px dotted var(--neon-green);
    padding-bottom: 0.5rem;
    color: var(--neon-green-light);
    text-shadow: 0 0 5px var(--neon-green);
}

.resources-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.resources-box h3 {
    background-color: var(--darker-bg);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--neon-green);
    width: 200px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.resources-box h3:hover {
    background-color: var(--neon-green);
    color: var(--darker-bg);
    transform: translateY(-5px);
    box-shadow: 0 5px 10px rgba(0, 204, 0, 0.3);
}

.video-container {
    background-color: var(--text-dark);
    border: 2px solid var(--neon-green);
    border-radius: 8px;
    padding: 1rem;
    max-width: 560px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.video-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--neon-green), transparent);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-container:hover {
    transform: scale(1.02);
    box-shadow: 0 0 20px var(--neon-green);
}

.video-container:hover::before {
    opacity: 0.2;
}

.video-container iframe {
    border-radius: 4px;
    margin-bottom: 0.5rem;
    width: 100%;
    height: 315px;
    max-width: 540px;
}

.video-overlay {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.video-container:hover .video-overlay {
    opacity: 1;
}

.video-caption {
    margin: 0;
    color: var(--text-light);
    font-style: italic;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.cards-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.card {
    background-color: var(--text-dark);
    border: 2px solid var(--neon-green);
    border-radius: 15px;
    overflow: hidden;
    width: 250px;
    transition: all 0.5s ease;
    position: relative;
    box-shadow: 0 0 10px rgba(0, 204, 0, 0.3);
}

.card:hover {
    transform: scale(1.05);
    filter: brightness(1.5);
    z-index: 10;
}

.card::before,
.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, var(--neon-green), transparent);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card::before {
    animation: rayAnimation 4s linear infinite;
    animation-play-state: paused;
}

.card::after {
    animation: rayAnimation 4s linear infinite;
    animation-delay: 2s;
    animation-play-state: paused;
}

.card:hover::before,
.card:hover::after {
    animation-play-state: running;
    opacity: 0.7;
}

.card-header {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    color: white;
    position: relative;
}

.card-1 .card-header {
    background-color: #ff9900;
}

.card-2 .card-header {
    background-color: #cc0066;
}

.card-3 .card-header {
    background-color: #9900ff;
}

.card-content {
    padding: 1.5rem;
    text-align: center;
}

.card-content h3 {
    margin-top: 0;
    color: var(--text-light);
}

.card-content p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.card-btn {
    padding: 0.5rem 1rem;
    background-color: var(--neon-green);
    color: var(--darker-bg);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.card-btn:hover {
    background-color: var(--neon-green-light);
}

.cards-container:hover .card:not(:hover) {
    filter: blur(3px);
    transform: scale(0.95);
    opacity: 0.7;
    z-index: 0;
}

@keyframes rayAnimation {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

footer {
    grid-area: footer;
    background-color: var(--darker-bg);
    padding: 0.5rem;
    text-align: center;
    border-top: 2px solid var(--neon-green);
    font-size: 0.9rem;
    /* position: sticky; - Убрано */
    /* bottom: 0; - Убрано */
    /* clear: both; - Убрано */
    /* border-top: 2px solid var(--neon-green); - Уже есть */
    /* position: relative; - Grid сам размещает */
    /* transition для плавности при адаптации */
    transition: padding 0.3s ease;
}

.gallery-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1rem;
    max-width: 350px;
    width: 80vw; /* Более гибкая ширина */
    height: 80vw; /* Соответственно высота */
    max-height: 350px;
    margin-left: auto;
    margin-right: auto;
}

.gallery-item {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    cursor: pointer;
    border: 1px solid var(--neon-green);
    box-shadow: 0 0 3px var(--neon-green);
    flex-grow: 1;
}
.gallery-item.item-1 {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
    transform: rotate(2deg);
}

.gallery-item.item-2 {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
    transform: rotate(-1deg);
}

.gallery-item.item-3 {
    grid-column: 3 / 4;
    grid-row: 1 / 3;
    transform: rotate(1deg);
}

.gallery-item.item-4 {
    grid-column: 1 / 3;
    grid-row: 3 / 4;
    transform: rotate(-2deg);
}

.gallery-item.item-5 {
    grid-column: 3 / 4;
    grid-row: 3 / 4;
    transform: rotate(3deg);
}

.gallery-item.item-6 {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
    transform: rotate(1deg);
}

.gallery-item.item-7 {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
    transform: rotate(-1deg);
}

.gallery-item.item-8 {
    grid-column: 3 / 4;
    grid-row: 2 / 3;
    transform: rotate(2deg);
}

.gallery-item.item-9 {
    grid-column: 2 / 3;
    grid-row: 3 / 4;
    transform: rotate(-2deg);
}
.gallery-item:hover {
    transform: scale(1.25) rotate(50deg);
    box-shadow: 0 0 500px var(--neon-green);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    margin: 0;
    padding: 0;
}

form {
    background-color: var(--text-dark);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--neon-green);
}

form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--neon-green-light);
}

form input[type="text"],
form input[type="email"],
form textarea {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--dark-bg);
    color: var(--text-light);
    box-sizing: border-box;
    transition: border-color 0.3s;
}

form input[type="text"]:focus,
form input[type="email"]:focus,
form textarea:focus {
    outline: none;
    border-color: var(--neon-green);
    box-shadow: 0 0 5px var(--neon-green);
}

form textarea::placeholder {
    color: #888;
}

form input[type="submit"] {
    background-color: var(--neon-green);
    color: var(--darker-bg);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
}

form input[type="submit"]:hover {
    background-color: var(--neon-green-light);
    box-shadow: 0 0 10px var(--neon-green);
}

iframe {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
    height: 300px;
    border: 2px solid var(--neon-green);
    box-shadow: 0 0 5px var(--neon-green);
}

p::first-letter {
    font-size: 1.5em;
    color: var(--neon-green-light);
}

p::first-line {
    font-weight: bold;
    color: var(--neon-green);
}

::selection {
    background-color: var(--neon-green);
    color: var(--darker-bg);
}
@media (max-width: 768px) {
    .main-grid-container {
        grid-template-areas:
            "header"
            "main"
            "footer";
        min-height: 100vh; 
    }
    header {
        align-items: stretch; 
        padding: 0.5rem; 
        height: auto; 
        min-height: 60px; 
    }

    header h1 {
        text-align: center; 
        margin-left: 0; 
        order: 2; 
        font-size: 1rem;
        padding: 0.5rem 0; 
    }

    nav {
        order: 1; 
        margin-right: 0; 
        justify-content: center; 
        padding: 0.5rem 0; 
    }

    .notification-container {
        order: 3; 
        margin-right: 0; 
        display: flex; 
        justify-content: center; 
        padding: 0.5rem 0; 
    }

   
    nav .burger-menu {
        display: flex;
    }

    
    .nav-menu {
        position: absolute;
        top: 100%; 
        left: 0;
        width: 100%;
        background-color: var(--darker-bg);
        flex-direction: column; 
        align-items: center;
        padding: 1rem 0;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); 
        transition: clip-path 0.3s ease-out;
        border-bottom: 2px solid var(--neon-green);
        z-index: 999; 
    }

    #burger-toggle:checked ~ .nav-menu {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .nav-menu li {
        margin: 0.5rem 0; 
    }

    main {
        padding: 70px 1rem 1rem 1rem; 
    }

    section {
        padding: 0.5rem; 
        margin-bottom: 1rem; 
    }

    .resources-box {
        flex-direction: column; 
        align-items: center; 
    }

    .resources-box h3 {
        width: 90%; 
        min-width: 200px; 
        margin: 0.5rem 0; 
    }

    .gallery-container {
        width: 95vw; 
        height: 95vw; 
        max-width: 300px; 
        max-height: 300px; 
        grid-template-columns: repeat(2, 1fr); 
        grid-template-rows: repeat(5, 1fr);
        gap: 0.5rem;
    }

    .gallery-item {
        transform: rotate(0); 
        transition: box-shadow 0.3s ease; 
    }

    .gallery-item:hover {
        transform: scale(1.05) rotate(0); 
        box-shadow: 0 0 20px var(--neon-green);
    }

    .video-container {
        max-width: 100%; 
        padding: 0.5rem; 
    }

    .video-container iframe {
        height: 200px; 
    }

    .cards-container {
        gap: 1rem; 
    }

    .card {
        width: 100%; 
        max-width: 300px; 
        margin: 0 auto;
    }

    .cards-container:hover .card:not(:hover) {
        filter: none;
        transform: none;
        opacity: 1;
    }

    .glass-container {
        flex-direction: column; 
        align-items: center;
        gap: 0.5rem; 
    }

    .glass-card {
        width: 100%;
        max-width: 300px; 
        height: 150px;
        margin: 0 auto;
    }

    .social-container {
        flex-direction: column; 
        align-items: center; 
        gap: 0.5rem; 
    }

    .social-btn {
        width: 100%; 
        max-width: 300px; 
        margin: 0 auto; 
    }

    .flex-container {
        flex-direction: column; 
        align-items: center; 
        gap: 0.5rem;
    }

    .flex-card {
        width: 100%; 
        max-width: 300px; 
        height: 120px;
        margin: 0 auto; 
    }

    .button-container {
        flex-direction: column; 
        align-items: center; 
        gap: 0.5rem; 
    }

    .btn {
        width: 100%; 
        max-width: 300px; 
        margin: 0 auto;
    }

    h1 { font-size: 1.4rem; }
    h2 { font-size: 1.2rem; }
    h3 { font-size: 1rem; }
    body { font-size: 0.9rem; }
    .nav-menu a { font-size: 0.85rem; } 
    .card-content p { font-size: 0.8rem; } 
}

@media (max-width: 480px) {
    header h1 { font-size: 1.1rem; }
    main { padding: 70px 0.5rem 0.5rem 0.5rem; }
    section { padding: 0.25rem; margin-bottom: 0.5rem; }
    .gallery-container {
        width: 98vw;
        height: 98vw;
        max-width: 250px;
        max-height: 250px;
        grid-template-columns: 1fr 1fr; 
    }
    .video-container iframe { height: 150px; }
    .resources-box h3 { width: 95%; min-width: 180px; }
    .glass-card, .social-btn, .flex-card, .btn { max-width: 240px; }
    .glass-card { height: 120px; }
    .flex-card { height: 100px; }
    .card { max-width: 260px; }
    .card-content { padding: 0.75rem; }
    .card-btn { padding: 0.2rem 0.5rem; font-size: 0.8rem; }
    h1 { font-size: 1.2rem; }
    h2 { font-size: 1.1rem; }
    h3 { font-size: 0.9rem; }
    body { font-size: 0.8rem; }
    .nav-menu a { font-size: 0.8rem; }
    .card-content p { font-size: 0.75rem; }
}



h1, h2, h3 {
    color: var(--neon-green-light);
    text-shadow: 0 0 5px var(--neon-green);
}

h1 {
    font-size: 1.8rem;
}

h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid var(--neon-green);
    padding-bottom: 0.25rem;
}

h3 {
    font-size: 1.2rem;
}

a {
    color: var(--neon-green);
}

img {
    display: block;
    margin: 1rem auto;
    border-radius: 4px;
}

ul, ol {
    padding-left: 1.5rem;
}

dl dt {
    font-weight: bold;
    color: var(--neon-green-light);
    border-bottom: 1px dotted var(--neon-green);
    padding-bottom: 0.25rem;
}

dl dd {
    margin-left: 1rem;
    margin-bottom: 0.5rem;
}

pre {
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    overflow-x: auto;
    color: var(--neon-green-light);
    font-size: 0.9em;
    box-shadow: inset 0 0 10px rgba(0, 102, 0, 0.5);
}

.glass-container {
    display: flex;
    justify-content: space-around;
    gap: 1rem;
    margin-top: 1rem;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1.5rem;
    width: 200px;
    height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, var(--neon-green), transparent);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 204, 0, 0.3);
}

/* анимация квадратов внутри */
.glass-card::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--neon-green-light);
    border-radius: 2px;
    animation: moveSquares 4s linear infinite;
}

@keyframes moveSquares {
    0% { top: 10%; left: 10%; }
    25% { top: 70%; left: 80%; }
    50% { top: 80%; left: 10%; }
    75% { top: 20%; left: 70%; }
    100% { top: 10%; left: 10%; }
}

.glass-card:nth-child(2)::after {
    animation-delay: -1.33s;
}

.glass-card:nth-child(3)::after {
    animation-delay: -2.66s;
}

.social-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.social-btn {
    position: relative;
    display: inline-block;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    color: white;
    border-radius: 50px;
    overflow: hidden;
    cursor: pointer;
    transition: color 0.3s ease;
    font-weight: bold;
}

.social-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

.social-btn span {
    position: relative;
    z-index: 2;
}

.social-btn:hover::before {
    left: 100%;
}

.social-btn.steam {
    background-color: var(--steam-color);
}

.social-btn.telegram {
    background-color: var(--telegram-color);
}

.social-btn.github {
    background-color: var(--github-color);
}

.social-btn:hover {
    cursor: var(--cursor-pointer, pointer);
}

.flex-container {
    display: flex;
    justify-content: space-around;
    gap: 1rem;
    margin-top: 1rem;
}

.flex-card {
    background-color: var(--text-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    width: 200px;
    height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: transform 0.3s ease, filter 0.3s ease;
    position: relative;
    overflow: hidden;
}

.flex-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--neon-green), transparent);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.flex-card h3 {
    transition: transform 0.3s ease;
}

.flex-card:hover {
    transform: scale(1.05);
    filter: brightness(1.2);
}

.flex-card:hover::before {
    opacity: 0.3;
}

.flex-card:hover h3 {
    transform: translateY(-5px);
}

.button-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    color: var(--text-light);
}

.btn-1 {
    background-color: var(--neon-green);
    color: var(--darker-bg);
}

.btn-1::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
    transition: left 0.5s ease;
}

.btn-1:hover::before {
    left: 100%;
}

.btn-2 {
    background-color: var(--darker-bg);
    border: 2px solid var(--neon-green);
    color: var(--neon-green);
}

.btn-2::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background-color: var(--neon-green);
    transition: width 0.3s ease;
    z-index: -1;
}

.btn-2:hover {
    color: var(--darker-bg);
    transform: scale(1.05);
}

.btn-2:hover::after {
    width: 100%;
}

.btn-3 {
    background-color: var(--text-dark);
    box-shadow: 0 0 10px var(--neon-green);
}

.btn-3::before {
    content: '!';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 1.5rem;
    color: var(--neon-green-light);
    transition: transform 0.3s ease;
    z-index: 1;
}

.btn-3:hover {
    transform: rotate(5deg);
    box-shadow: 0 0 20px var(--neon-green);
}

.btn-3:hover::before {
    transform: translate(-50%, -50%) scale(1);
}

.btn-4 {
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
}

.btn-4::before,
.btn-4::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--neon-green);
    transition: all 0.3s ease;
}

.btn-4::before {
    top: 0;
    left: 0;
}

.btn-4::after {
    bottom: 0;
    right: 0;
}

.btn-4:hover {
    background-color: rgba(0, 204, 0, 0.1);
    transform: translateY(-3px);
}

.btn-4:hover::before,
.btn-4:hover::after {
    width: 100%;
}

/* Кнопка входа в шапке */
.login-header-btn {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background-color: var(--neon-green);
    color: var(--darker-bg);
    text-decoration: none;
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: bold;
    font-size: 0.9rem;
    transition: background-color 0.3s, transform 0.2s;
    margin-left: 0.5rem;
    white-space: nowrap;
}

.login-header-btn:hover {
    background-color: var(--neon-green-light);
    transform: scale(1.05);
}

/* Мобильная адаптация: кнопка в шапке */
@media (max-width: 768px) {
    .login-header-btn {
        margin-top: 0.5rem;
        margin-left: 0;
        order: 4; /* после уведомлений */
    }
}