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

:root {
    --bg-dark: #0A0C10;
    --bg-dark-secondary: #0F1117;
    --card-dark: #151921;
    --border-dark: #23272F;
    --bg-light: #F8FAFE;
    --bg-light-secondary: #F1F4F9;
    --card-light: #FFFFFF;
    --border-light: #E4E9F0;
    --accent: #00E5A0;
    --accent-dark: #00C789;
    --accent-soft: rgba(0, 229, 160, 0.12);
    --text-dark-primary: #EDF2F7;
    --text-dark-secondary: #94A3B8;
    --text-light-primary: #0F172A;
    --text-light-secondary: #475569;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-dark-primary);
    line-height: 1.5;
    transition: background 0.2s, color 0.2s;
}

body.light {
    background: var(--bg-light);
    color: var(--text-light-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: var(--transition);
}

nav.scrolled {
    border-bottom-color: var(--border-dark);
    background: rgba(10, 12, 16, 0.98);
}

body.light nav {
    background: rgba(248, 250, 254, 0.85);
}

body.light nav.scrolled {
    border-bottom-color: var(--border-light);
    background: rgba(248, 250, 254, 0.98);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -0.3px;
    background: linear-gradient(135deg, var(--accent) 0%, #4ADE80 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dark-secondary);
    transition: var(--transition);
}

body.light .nav-links a {
    color: var(--text-light-secondary);
}

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

.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 6px;
    border-radius: 8px;
    transition: var(--transition);
    color: var(--text-dark-secondary);
}

.theme-toggle:hover {
    color: var(--accent);
    background: var(--accent-soft);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    padding: 6px 14px;
    background: var(--accent-soft);
    border-radius: 40px;
    color: var(--accent);
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    display: inline-block;
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% { opacity: 0.5; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1); }
}

section {
    padding: 100px 0 80px;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: var(--accent-soft);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 40px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -1.2px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.highlight {
    color: var(--accent);
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-dark-secondary);
    margin: 24px 0 32px;
    line-height: 1.6;
    max-width: 90%;
}

body.light .hero-description {
    color: var(--text-light-secondary);
}

.button-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--accent);
    color: #0A0C10;
    box-shadow: 0 2px 8px rgba(0, 229, 160, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 229, 160, 0.3);
}

.btn-secondary {
    border: 1px solid var(--accent);
    color: var(--accent);
    background: transparent;
}

.btn-secondary:hover {
    background: var(--accent-soft);
    transform: translateY(-3px);
}

.social-links {
    display: flex;
    gap: 14px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    color: var(--text-dark-secondary);
    transition: var(--transition);
}

body.light .social-icon {
    background: var(--card-light);
    border-color: var(--border-light);
    color: var(--text-light-secondary);
}

.social-icon:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-3px);
}

.hero-card {
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    border-radius: 24px;
    padding: 32px;
    box-shadow: var(--shadow-md);
}

body.light .hero-card {
    background: var(--card-light);
    border-color: var(--border-light);
}

.hero-card p {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-card .green {
    color: var(--accent);
}

.cursor-block {
    color: var(--accent);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.section-header.center {
    justify-content: center;
}

.section-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    color: var(--accent);
    font-weight: 500;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-dark), transparent);
}

body.light .section-line {
    background: linear-gradient(90deg, var(--border-light), transparent);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
}

.about-text p {
    color: var(--text-dark-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

body.light .about-text p {
    color: var(--text-light-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 8px;
}

.skill-tag {
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    padding: 8px 16px;
    border-radius: 40px;
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
}

body.light .skill-tag {
    background: var(--card-light);
    border-color: var(--border-light);
}

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

.experience-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.exp-card {
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    border-radius: 20px;
    padding: 28px;
    transition: var(--transition);
}

.exp-card:hover {
    border-color: var(--accent);
    transform: translateX(6px);
}

.exp-header {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.exp-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.exp-company {
    color: var(--accent);
    text-decoration: none;
}

.exp-company:hover {
    text-decoration: underline;
}

.exp-date {
    font-size: 0.8rem;
    color: var(--text-dark-secondary);
    font-family: monospace;
}

body.light .exp-date {
    color: var(--text-light-secondary);
}

.exp-list {
    list-style: none;
    margin: 16px 0 20px;
}

.exp-list li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    color: var(--text-dark-secondary);
    font-size: 0.9rem;
}

body.light .exp-list li {
    color: var(--text-light-secondary);
}

.exp-list li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.exp-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-soft);
    padding: 6px 14px;
    border-radius: 40px;
    font-size: 0.75rem;
    color: var(--accent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}

.project-card {
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    border-radius: 20px;
    padding: 28px;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.project-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.folder-icon {
    font-size: 1.8rem;
}

.project-links a {
    color: var(--text-dark-secondary);
    margin-left: 12px;
    text-decoration: none;
    font-size: 1.2rem;
    transition: var(--transition);
}

.project-links a:hover {
    color: var(--accent);
}

.featured-tag {
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--accent-soft);
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.project-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.project-card p {
    color: var(--text-dark-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

body.light .project-card p {
    color: var(--text-light-secondary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-tech span {
    font-size: 0.7rem;
    font-family: monospace;
    background: rgba(255,255,255,0.05);
    padding: 4px 10px;
    border-radius: 20px;
    color: var(--text-dark-secondary);
}

body.light .project-tech span {
    background: rgba(0,0,0,0.05);
    color: var(--text-light-secondary);
}

.more-projects {
    text-align: center;
    margin-top: 48px;
}

.contact-section {
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-title {
    font-size: 1.9rem;
    margin: 16px 0;
    font-weight: 600;
}

.contact-text {
    color: var(--text-dark-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

body.light .contact-text {
    color: var(--text-light-secondary);
}

.contact-socials {
    display: flex;
    justify-content: center;
    gap: 28px;
    margin-top: 32px;
}

.contact-socials a {
    color: var(--text-dark-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.contact-socials a:hover {
    color: var(--accent);
}

footer {
    border-top: 1px solid var(--border-dark);
    padding: 32px 0;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-dark-secondary);
}

body.light footer {
    border-top-color: var(--border-light);
    color: var(--text-light-secondary);
}

@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .nav-links {
        gap: 20px;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 700px) {
    .nav-links {
        display: none;
    }
    .container {
        padding: 0 24px;
    }
    section {
        padding: 70px 0 50px;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .skills-grid {
        grid-template-columns: 1fr;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
}