/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #fafafa;
    --color-bg-secondary: #f4f4f5;
    --color-bg-tertiary: #e4e4e7;
    --color-text: #18181b;
    --color-text-muted: #71717a;
    --color-accent: #0891b2;
    --color-accent-secondary: #7c3aed;
    --color-border: #d4d4d8;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    --max-width: 1000px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-mono);
    font-weight: 500;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.1rem; }
h4 { font-size: 1rem; }

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(250, 250, 250, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.logo::before {
    content: '~/';
    color: var(--color-text-muted);
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: lowercase;
}

.nav-links a::before {
    content: './';
    opacity: 0;
    transition: opacity 0.2s ease;
}

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

.nav-links a:hover::before {
    opacity: 1;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 1px;
    background-color: var(--color-text);
    transition: all 0.3s ease;
}

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

.hero-greeting {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.hero-greeting::before {
    content: '> ';
    color: var(--color-text-muted);
}

.hero-name {
    font-size: clamp(2rem, 6vw, 3.5rem);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* Sections */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title::before {
    content: '#';
    color: var(--color-accent);
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--color-border), transparent);
    margin-left: var(--spacing-sm);
}

/* About Section */
.about {
    padding-top: calc(var(--spacing-xl) + 60px);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 250px;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
}

.about-text p:first-child {
    color: var(--color-text);
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-image img {
    width: 230px;
    height: 230px;
    object-fit: cover;
    object-position: 85% center;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    filter: grayscale(20%);
    transition: filter 0.3s ease;
}

.about-image img:hover {
    filter: grayscale(0%);
}

/* Resume Section */
.resume {
    background-color: var(--color-bg-secondary);
}

.resume-section {
    margin-bottom: var(--spacing-lg);
}

.resume-section:last-child {
    margin-bottom: 0;
}

.resume-heading {
    font-family: var(--font-mono);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-secondary);
    text-transform: lowercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.resume-heading::before {
    content: '// ';
    color: var(--color-text-muted);
}

.timeline {
    position: relative;
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-md) - 3px);
    top: 6px;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

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

.timeline-date {
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-content h4 {
    color: var(--color-text);
    margin-bottom: 2px;
}

.timeline-company {
    color: var(--color-accent);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-content p:last-child {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    font-family: var(--font-mono);
    padding: 0.4rem 0.75rem;
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    transition: all 0.2s ease;
}

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

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.2s ease;
}

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

.project-info {
    padding: var(--spacing-md);
}

.project-info h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.project-info p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
}

.project-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
}

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

/* Contact Section */
.contact {
    background-color: var(--color-bg-secondary);
}

.contact-intro {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.contact-form {
    max-width: 450px;
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: lowercase;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.contact-form .btn {
    margin-top: var(--spacing-sm);
}

.social-links {
    margin-top: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

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

/* Footer */
.footer {
    padding: var(--spacing-md) 0;
    text-align: center;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    border-top: 1px solid var(--color-border);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.25rem; }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-bg-secondary);
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        gap: var(--spacing-sm);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

    .about-image img {
        width: 150px;
        height: 150px;
        border-radius: 50%;
    }

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Selection */
::selection {
    background-color: var(--color-accent);
    color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}