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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --dark-bg: #0f0f1e;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #b4b4b4;
    --facebook: #1877f2;
    --zalo: #0180c7;
    --tiktok: #000000;
    --locket: #ff6b6b;
    --github: #333333;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
}

.container {
    max-width: 900px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.profile-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Avatar Section */
.avatar-container {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
}

.avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.2);
    object-fit: cover;
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
}

.avatar:hover {
    transform: scale(1.05);
}

.avatar-ring {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    background: var(--primary-gradient);
    animation: rotate 3s linear infinite;
    z-index: 1;
}

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

.name {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.bio {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* Section Titles */
.section-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--primary-gradient);
    margin: 10px auto 0;
    border-radius: 2px;
}

/* Social Media Links */
.social-section {
    margin-bottom: 40px;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.1));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.social-link:hover::before {
    transform: translateX(0);
}

.social-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.social-link i {
    font-size: 2rem;
    transition: transform 0.3s ease;
}

.social-link:hover i {
    transform: scale(1.2);
}

.social-link span {
    font-size: 0.9rem;
    font-weight: 600;
}

.social-link.facebook:hover {
    border-color: var(--facebook);
    box-shadow: 0 10px 30px rgba(24, 119, 242, 0.3);
}

.social-link.zalo:hover {
    border-color: var(--zalo);
    box-shadow: 0 10px 30px rgba(1, 128, 199, 0.3);
}

.social-link.tiktok:hover {
    border-color: #ee1d52;
    box-shadow: 0 10px 30px rgba(238, 29, 82, 0.3);
}

.social-link.locket:hover {
    border-color: var(--locket);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.3);
}

.social-link.github:hover {
    border-color: #7c3aed;
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.3);
}

/* Gaming Section */
.gaming-section {
    margin-top: 40px;
}

.game-cards {
    display: grid;
    gap: 20px;
    margin-top: 20px;
}

.game-card {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.game-card:hover::before {
    transform: scaleY(1);
}

.game-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.game-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: var(--primary-gradient);
    flex-shrink: 0;
}

.game-icon i {
    font-size: 1.8rem;
    color: white;
}

.game-info {
    flex: 1;
}

.game-info h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.game-id {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-family: 'Courier New', monospace;
}

.copy-btn {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.copy-btn.copied {
    background: #10b981;
    border-color: #10b981;
}

/* Particles Background */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .profile-card {
        padding: 30px 20px;
    }

    .name {
        font-size: 2rem;
    }

    .social-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .game-card {
        flex-direction: column;
        text-align: center;
    }

    .game-icon {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .social-grid {
        grid-template-columns: 1fr;
    }
}