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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #151932;
    --bg-card: #1a1f3a;
    --accent-primary: #00d9ff;
    --accent-secondary: #7b2cbf;
    --text-primary: #e0e6ed;
    --text-secondary: #8b92a8;
    --border-color: #2a3150;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

nav a:hover {
    color: var(--accent-primary);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

.hero {
    padding: 4rem 0;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(123, 44, 191, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.skills-section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
}

.about-section {
    padding: 0 0 4rem 0;
}

.about-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    line-height: 1.9;
    color: var(--text-secondary);
    font-size: 1.05rem;
    position: relative;
    overflow: hidden;
}

.about-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.2);
}

.skill-card:hover::before {
    transform: scaleX(1);
}

.skill-card h3 {
    color: var(--accent-primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.skill-card ul {
    list-style: none;
    color: var(--text-secondary);
}

.skill-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-card li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

.skill-level {
    display: inline-flex;
    gap: 2px;
    margin-left: 1rem;
    font-size: 0.9rem;
}

.skill-level .star {
    color: var(--accent-primary);
}

.skill-level .star.empty {
    color: var(--border-color);
}

.profile-link {
    text-decoration: none;
    color: inherit;
}

.profile-link .stat-card {
    transition: all 0.3s ease;
}

.profile-link:hover .stat-card {
    border-color: var(--accent-primary);
    transform: translateX(5px);
}

.stats-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: scale(1.05);
    border-color: var(--accent-primary);
}

.stat-card h4 {
    color: var(--accent-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.stat-card img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 1rem;
}

.cta-section {
    padding: 0.5rem 0 4rem 0;
    text-align: center;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 217, 255, 0.4);
}

footer {
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
}

footer p {
    margin: 0.5rem 0;
}

.additional-skills-divider {
    margin: 3rem 0;
    position: relative;
    text-align: center;
}

.additional-skills-divider-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
    position: absolute;
    width: 100%;
    top: 50%;
}

.additional-skills-divider-label {
    background: var(--bg-primary);
    padding: 0 2rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.activity-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.full-height {
    height: 100%;
}

.profile-links-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.clickable-card {
    cursor: pointer;
}

.profile-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.profile-row h4 {
    margin: 0;
}

.profile-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.profile-arrow {
    margin-left: auto;
    color: var(--accent-primary);
    font-size: 1.2rem;
}

.cert-description {
    color: var(--text-secondary);
    margin-top: 1rem;
}

.cert-provider {
    color: var(--accent-primary);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow-y: auto;
}

.modal-content {
    max-width: 800px;
    margin: 50px auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.modal-title {
    color: var(--accent-primary);
    margin-bottom: 2rem;
}

.modal-subtitle {
    color: var(--text-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-text {
    color: var(--text-secondary);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

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

    nav ul {
        gap: 1rem;
    }

    .activity-layout {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 20px;
        padding: 1.5rem;
    }
}

.terminal-effect {
    font-family: 'Courier New', monospace;
    color: var(--accent-primary);
}