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

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: #0a0a0a;
    color: #e0e0e0;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    min-width: 280px; 
}

.checkmark-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.checkmark {
    position: absolute;
    font-size: 22px;
    opacity: 0.15;
    user-select: none;
    animation: float linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding-top: 2rem;
}

h1 {
    font-size: 2.1rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.subtitle {
    font-size: 1.2rem;
    color: #8a8a8a;
    font-weight: 300;
}

.content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 356px) {
    .content {
        grid-template-columns: 0fr;
    }

    .bio-card, .skills-card, .experience-card, .contacts-card {
        padding: 1.9rem !important;
    }
}

.bio-card, .skills-card, .experience-card, .contacts-card {
    background-color: rgba(17, 17, 17, 0.85);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.bio-card:hover, .skills-card:hover, .experience-card:hover, .contacts-card:hover {
    transform: translateY(-5px);
}

.card-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #9fd28d;
    position: relative;
    padding-bottom: 0.5rem;
}

.card-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 2px;
    background-color: #9fd28d;
}

p {
    line-height: 1.5;
    margin-bottom: 1.2rem;
    font-weight: 300;
    font-size: 13pt;
}

.highlight {
    color: #9fd28d;
    font-weight: 500;
}

.skills-list {
    list-style-type: none;
}

.skills-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.skills-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    top: 0;
}

.experience-item {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.experience-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.experience-title {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 0.3rem;
}

.experience-period {
    font-size: 0.9rem;
    color: #8a8a8a;
    margin-bottom: 0.8rem;
}

.project-links {
    margin-top: 1rem;
}

.project-link {
    display: inline-block;
    color: #9fd28d;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 6px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.project-link:hover {
    background-color: rgba(0, 255, 136, 0.1);
    border-color: #9fd28d;
    transform: translateY(-2px);
}

.contacts-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    margin-bottom: 7px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background-color: rgba(0, 255, 136, 0.1);
    transform: translateX(5px);
}

.contact-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    width: 40px;
    text-align: center;
}

.contact-text {
    flex-grow: 1;
}

.contact-title {
    font-weight: 500;
    color: #ffffff;
}

.contact-link {
    color: #9fd28d;
    text-decoration: none;
    font-size: 0.9rem;
}

.contact-link:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: #8a8a8a;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 2rem;
}