:root {
    --neon: #19FEC7;
    --neon-dark: #00c9a5;
    --neon-light: #4dffe0;
    --neon-muted: #2dd9b8;
    --dark-bg: #0a1e3f;
    --dark-card: #122b54;
    --dark-header: #0c1e3a;
    --text-primary: #ffffff;
    --text-secondary: #a0c0ff;
    --accent: #19FEC7;
}

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

body {
    background-image: url('../images/bg.jpg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 30, 63, 0.85);
    z-index: -1;
}

.header {
    background: linear-gradient(90deg, var(--dark-header), var(--dark-card));
    border-bottom: 2px solid var(--neon);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--neon);
    text-shadow: 0 0 10px var(--neon);
    text-decoration: none;
}

.logo span {
    color: var(--neon-light);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    padding: 5px 15px;
    border-radius: 5px;
    transition: all 0.3s;
}

.nav-links a:hover {
    color: var(--neon);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.5);
}

.user-panel {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn {
    background: linear-gradient(90deg, var(--neon), var(--neon-dark));
    color: #0a0a15;
    border: none;
    padding: 10px 25px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

.btn:hover {
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--neon);
    color: var(--neon);
}

.btn-outline:hover {
    background: var(--neon);
    color: #0a0a15;
}

.main-container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
    background: rgba(10, 10, 21, 0.85);
    min-height: calc(100vh - 150px);
    border-radius: 10px;
    padding: 30px 20px;
    border: 1px solid var(--neon);
}

.card {
    background: rgba(18, 18, 32, 0.8);
    border-radius: 10px;
    border: 1px solid rgba(0, 243, 255, 0.2);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.1);
    padding: 25px;
    margin-bottom: 20px;
}

.card-header {
    border-bottom: 1px solid rgba(0, 243, 255, 0.3);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.card-title {
    color: var(--neon);
    font-size: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--dark-card);
    border: 1px solid rgba(0, 243, 255, 0.3);
    border-radius: 5px;
    color: var(--text-primary);
    font-size: 16px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--neon);
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.5);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(0, 243, 255, 0.2);
}

.table th {
    background: var(--dark-header);
    color: var(--neon);
}

.table tr:hover {
    background: rgba(0, 243, 255, 0.05);
}

.topic-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--dark-card);
    margin-bottom: 10px;
    border-radius: 5px;
    border-left: 3px solid var(--neon);
}

.topic-title {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.topic-title:hover {
    color: var(--neon);
}

.topic-meta {
    color: var(--text-secondary);
    font-size: 14px;
}

.category-list {
    list-style: none;
}

.category-list li {
    background: var(--dark-card);
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(0, 243, 255, 0.2);
}

.category-header {
    background: var(--dark-header);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-name {
    color: var(--neon);
    font-size: 18px;
    font-weight: bold;
}

.category-desc {
    color: var(--text-secondary);
    padding: 15px 20px;
}

.footer {
    background: var(--dark-header);
    border-top: 2px solid var(--neon);
    padding: 30px 0;
    margin-top: 50px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    color: var(--text-secondary);
}

.server-status {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
}

.server-status.online {
    background: rgba(25, 254, 200, 0.15);
    color: #2dd9b8;
}

.server-status.offline {
    background: rgba(255, 0, 0, 0.2);
    color: #ff0000;
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        gap: 15px;
    }
}

.profile-stat-card {
    transition: transform 0.3s, box-shadow 0.3s;
}

.profile-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 243, 255, 0.2);
}

.level-bar {
    height: 6px;
    background: var(--dark-header);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 10px;
}

.level-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--neon), var(--neon-light));
    border-radius: 3px;
}

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 12px;
    margin-right: 5px;
    background: var(--dark-header);
    color: var(--neon);
}