:root {
    --bg-primary: #0a0b0d;
    --bg-secondary: #12141a;
    --bg-card: #181b24;
    --bg-card-hover: #1f2330;
    --border-color: #262b3d;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.15);
    --success: #10b981;
    --code-bg: #050507;
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(37, 99, 235, 0.1);
    --success: #059669;
    --code-bg: #0f172a;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.hidden {
    display: none !important;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(var(--bg-primary), 0.85);
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.logo-bracket {
    color: var(--accent);
}

.logo-slash {
    color: var(--text-secondary);
}

.nav-list {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--accent);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

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

[data-theme="dark"] .sun-icon {
    display: block;
}
[data-theme="dark"] .moon-icon {
    display: none;
}
[data-theme="light"] .sun-icon {
    display: none;
}
[data-theme="light"] .moon-icon {
    display: block;
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    width: 38px;
    height: 38px;
}

.hero-section {
    padding: 140px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.925rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    border-color: var(--accent);
    background-color: var(--bg-card-hover);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent);
    background-color: var(--accent-glow);
}

.hero-terminal {
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.terminal-header {
    background-color: var(--bg-secondary);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background-color: #ef4444; }
.terminal-dot.yellow { background-color: #f59e0b; }
.terminal-dot.green { background-color: #10b981; }

.terminal-title {
    margin-left: auto;
    margin-right: auto;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.terminal-body {
    padding: 1.25rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.terminal-prompt {
    color: var(--accent);
}

.terminal-output {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.cursor-blink {
    animation: blink 1s infinite;
}

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

.section {
    padding: 100px 0;
}

.section-alt {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 3.5rem;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.5rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.stack-category {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
    transition: var(--transition);
}

.stack-category:hover {
    border-color: var(--accent);
}

.stack-category-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    color: var(--accent);
}

.stack-category-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stack-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.stack-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.925rem;
    color: var(--text-secondary);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.stack-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.badge-level {
    font-size: 0.725rem;
    font-family: var(--font-mono);
    padding: 0.2rem 0.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
}

.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 55px;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    top: 0;
    left: 12px;
    width: 18px;
    height: 18px;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent);
    border-radius: 50%;
}

.timeline-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--accent);
}

.timeline-header-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.timeline-header-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.timeline-date {
    font-size: 0.825rem;
    font-family: var(--font-mono);
    color: var(--accent);
    background-color: var(--accent-glow);
    padding: 0.25rem 0.65rem;
    border-radius: 50px;
}

.timeline-company {
    font-size: 0.925rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-description {
    color: var(--text-secondary);
    font-size: 0.975rem;
    margin-bottom: 1rem;
}

.timeline-tasks {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.timeline-tasks li {
    position: relative;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.925rem;
}

.timeline-tasks li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.project-icon {
    width: 44px;
    height: 44px;
    background-color: var(--accent-glow);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.project-links {
    display: flex;
    gap: 0.75rem;
}

.project-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tags span {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    color: var(--text-secondary);
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-status {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.project-status.active {
    color: var(--success);
}

.github-container {
    max-width: 1000px;
    margin: 0 auto;
}

.github-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 4rem 0;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.github-error {
    text-align: center;
    padding: 3rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.github-error p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.github-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.github-repo-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.github-repo-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.repo-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.repo-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
}

.repo-header h3 a {
    color: var(--text-primary);
    transition: var(--transition);
}

.repo-header h3 a:hover {
    color: var(--accent);
}

.repo-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.repo-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.repo-lang {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.lang-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
}

.repo-stats {
    display: flex;
    gap: 1rem;
}

.repo-stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.resume-card-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    max-width: 900px;
    margin: 0 auto;
    transition: var(--transition);
}

.resume-card-wrapper:hover {
    border-color: var(--accent);
}

.resume-card-content {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: space-between;
}

.resume-icon {
    width: 64px;
    height: 64px;
    background-color: var(--accent-glow);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}

.resume-text {
    flex: 1;
    min-width: 280px;
}

.resume-text h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.resume-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background-color: var(--accent-glow);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 1.25rem;
}

.contact-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 0.925rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
}

.contact-action {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: auto;
}

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-sub {
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .hero-content h1 {
        font-size: 2.75rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-primary);
        border-right: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        padding: 3rem 2rem;
        transition: left 0.3s ease;
    }
    .nav-menu.active {
        left: 0;
    }
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        width: 100%;
    }
    .nav-link {
        font-size: 1.2rem;
    }
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .hero-section {
        padding: 120px 0 60px;
    }
    .hero-content h1 {
        font-size: 2.25rem;
    }
    .hero-subtitle {
        font-size: 1.2rem;
    }
    .resume-card-content {
        flex-direction: column;
        align-items: flex-start;
    }
    .resume-actions {
        width: 100%;
    }
    .resume-actions .btn {
        width: 100%;
        justify-content: center;
    }
}.about-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 3.5rem;
    align-items: start;
}

.about-profile-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.profile-image-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: grayscale(15%) contrast(105%);
    transition: var(--transition);
}

.profile-image-container:hover .profile-img {
    filter: grayscale(0%) contrast(100%);
    transform: scale(1.02);
}

.profile-badge {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background-color: rgba(10, 11, 13, 0.85);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.about-stats-compact {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.about-stats-compact .stat-card {
    padding: 1rem 0.75rem;
    text-align: center;
}

.about-stats-compact .stat-number {
    font-size: 1.4rem;
}

.about-stats-compact .stat-label {
    font-size: 0.75rem;
    line-height: 1.2;
}

.terminal-header {
    background-color: var(--bg-secondary);
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.terminal-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--accent);
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .about-profile-card {
        max-width: 380px;
        margin: 0 auto;
        width: 100%;
    }
}