:root {
    --primary-color: #ffffff;
    --secondary-color: #cccccc;
    --accent-color: #00ff88;
    --paper-color: #0a0a0a;
    --grid-color: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(255, 255, 255, 0.03);
}

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

body {
    font-family: "Space Mono", monospace;
    background-color: var(--paper-color);
    color: var(--primary-color);
    line-height: 1.6;
    padding: 2rem;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    min-height: 100vh;
}

.paper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--paper-color);
    z-index: -1;
}

.paper::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 255, 136, 0.02) 0%, transparent 50%),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px),
        linear-gradient(var(--grid-color) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 30px 30px, 30px 30px;
}

.glow {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    top: -150px;
    right: -150px;
    z-index: -1;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.typewriter {
    border-right: 2px solid var(--accent-color);
    white-space: nowrap;
    overflow: hidden;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--accent-color); }
}

header {
    margin-bottom: 4rem;
    position: relative;
}

h1 {
    font-size: 3rem;
    font-weight: 400;
    margin-bottom: 1rem;
    letter-spacing: -1px;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.3rem;
    color: var(--secondary-color);
    font-style: italic;
    margin-bottom: 1rem;
}

.bio {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--secondary-color);
    max-width: 600px;
    margin-bottom: 2rem;
}

section {
    margin-bottom: 4rem;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeIn 1s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    font-weight: 400;
    position: relative;
    display: inline-block;
    color: var(--primary-color);
}

h2::after {
    content: "";
    position: absolute;
    width: 60px;
    height: 2px;
    bottom: -8px;
    left: 0;
    background: linear-gradient(90deg, var(--accent-color), transparent);
}

.quote {
    font-style: italic;
    color: var(--accent-color);
    border-left: 3px solid var(--accent-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-size: 1.2em;
    background: rgba(0, 255, 136, 0.05);
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.contact-links {
    margin-top: 1.5rem;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 1px solid var(--grid-color);
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-links a::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: left 0.5s;
}

.contact-links a:hover::before {
    left: 100%;
}

.contact-links a:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.skill-category {
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.skill-category:hover {
    border-color: var(--accent-color);
    transform: translateY(-5px);
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--grid-color);
    background: transparent;
    color: var(--secondary-color);
    font-size: 0.85rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: var(--accent-color);
    color: var(--paper-color);
    border-color: var(--accent-color);
}

.project {
    margin-bottom: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    padding: 0;
    transition: all 0.3s ease;
    cursor: pointer;
    overflow: hidden;
}

.project:hover {
    border-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.1);
}

.project-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--grid-color);
}

.project-title {
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-tech {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-style: italic;
}

.expand-icon {
    font-size: 1.5rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
}

.project.active .expand-icon {
    transform: rotate(45deg);
}

.project-content {
    max-height: 0;
    overflow: hidden;
    transition: all 0.5s ease;
}

.project.active .project-content {
    max-height: 500px;
}

.project-details {
    padding: 1.5rem;
    list-style: none;
}

.project-details li {
    position: relative;
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    color: var(--secondary-color);
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.3s ease;
}

.project.active .project-details li {
    opacity: 1;
    transform: translateX(0);
}

.project-details li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.github-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.github-link:hover {
    color: var(--primary-color);
}

.experience {
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    position: relative;
}

.experience::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--accent-color), transparent);
}

.experience h3 {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.experience .company {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.experience .date {
    color: var(--secondary-color);
    font-style: italic;
    margin-bottom: 1rem;
}

.education-item {
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.education-item h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.education-item .institution {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.education-item .details {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.cert-item {
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.cert-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.cert-item h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.cert-item p {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin: 0;
}

.contact-section {
    text-align: center;
    padding: 2rem 0;
}

.contact-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--secondary-color);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.contact-btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.contact-btn span {
    font-size: 1.1rem;
}

.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.hobby-item {
    background: var(--card-bg);
    border: 1px solid var(--grid-color);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.hobby-item:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.hobby-item .icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .contact-links {
        flex-direction: column;
        gap: 1rem;
    }

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

    .certifications-grid {
        grid-template-columns: 1fr;
    }

    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }

    .contact-btn {
        width: 100%;
        max-width: 280px;
    }
}