@import url('https://fonts.googleapis.com/css2?family=FERA+Code:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --secondary-color: #f97316;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg-color: #f9fafb;
    --bg-alt: #f3f4f6;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --accent-color: #f97316;
    --focus-color: #1e40af;

    --font-family: 'FERA Code', system-ui, -apple-system, sans-serif;
    --font-serif: 'FERA Code', system-ui, -apple-system, sans-serif;
    --font-mono: 'FERA Code', 'Courier New', monospace;

    --spacing-unit: 1rem;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    --max-width: 1200px;
    --border-radius: 8px;

    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background: linear-gradient(135deg, #f0f4f8 0%, #e8eef5 100%);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.3px;
    font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
    letter-spacing: -0.5px;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2.25rem;
    color: var(--primary-color);
    font-weight: 800;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.1rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    text-align: left;
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 400;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover,
a:focus {
    color: var(--primary-dark);
    text-decoration: underline;
    outline: 2px solid var(--focus-color);
    outline-offset: 2px;
}

a:focus {
    outline: 2px solid var(--focus-color);
}

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

figure {
    margin: 0;
    padding: 0;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

header {
    background-color: var(--bg-white);
    border-bottom: 2px solid var(--secondary-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.1);
}

.navbar {
    padding: var(--spacing-md) 0;
}

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

.breadcrumb {
    display: flex;
    align-items: center;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--secondary-color);
    color: white;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    text-decoration: none;
}

.back-btn:hover {
    background-color: #ea580c;
    transform: translateX(-3px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
}

.back-btn:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    margin: 0 var(--spacing-xl);
}

.logo h1 {
    margin: 0;
    font-size: 1.75rem;
    color: var(--primary-dark);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo .subtitle {
    margin: 4px 0 0 0;
    font-size: 0.85rem;
    color: var(--secondary-color);
    font-weight: 600;
}

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

.nav-menu a {
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
    color: var(--text-color);
}

.nav-menu a:hover {
    background-color: var(--bg-alt);
    color: var(--primary-color);
}

.nav-menu a:hover {
    background-color: var(--bg-color);
}

main {
    min-height: calc(100vh - 200px);
}

.about-section {
    background-color: rgba(255, 255, 255, 0.97);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-image img {
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.about-image img:hover {
    box-shadow: 0 20px 40px rgba(30, 64, 175, 0.15);
    transform: translateY(-4px);
}

.about-content h2 {
    margin-top: 0;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

.skills-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--secondary-color);
}

.skills-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: white;
    font-weight: 800;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.skill-card {
    background-color: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--border-light);
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.skill-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 12px 24px rgba(249, 115, 22, 0.15);
    transform: translateY(-6px);
}

.skill-card h3 {
    color: var(--primary-dark);
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
    font-weight: 700;
}

.skill-card ul {
    list-style: none;
    margin: 0;
}

.skill-card li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--text-light);
}

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

.experience-section {
    background-color: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border-light);
}

.experience-section h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-xl);
}

.experience-table {
    width: 100%;
    border-collapse: collapse;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.experience-table thead {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

.experience-table th {
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

.experience-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.experience-table tbody tr:hover {
    background-color: var(--bg-color);
}

.experience-table tbody tr:last-child td {
    border-bottom: none;
}

code, pre, .code-block {
    font-family: var(--font-mono);
    background-color: var(--bg-alt);
    border-radius: 4px;
    font-size: 0.95rem;
    color: var(--text-color);
}

code {
    padding: 2px 6px;
    display: inline-code;
}

pre {
    padding: var(--spacing-md);
    overflow-x: auto;
    border: 1px solid var(--border-light);
    line-height: 1.5;
}

.contact-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--secondary-color);
    text-align: center;
}

.contact-section h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-xl);
    color: white;
    font-weight: 800;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.social-links a {
    display: inline-block;
    padding: 10px 24px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 0.95rem;
}

.social-links a:hover {
    background-color: white;
    color: var(--primary-dark);
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(249, 115, 22, 0.3);
}

.social-links a:focus {
    outline: 2px solid var(--focus-color);
    outline-offset: 2px;
}

footer {
    background-color: var(--primary-dark);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 4px solid var(--secondary-color);
}

.footer-content {
    background-color: var(--primary-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: white;
    margin-top: 0;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    font-weight: 400;
}

.footer-section a:hover {
    color: white;
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
    margin: 0;
    color: #888;
}

.projects-section {
    background-color: rgba(255, 255, 255, 0.97);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border-light);
}

.projects-section h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: linear-gradient(135deg, var(--bg-white) 0%, #fafbfc 100%);
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 2px solid var(--border-light);
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.project-card:hover {
    border-color: var(--secondary-color);
    box-shadow: 0 12px 32px rgba(249, 115, 22, 0.18);
    transform: translateY(-8px);
}

.project-card h3 {
    margin: 0;
    color: var(--primary-dark);
    font-size: 1.3rem;
    font-weight: 700;
}

.project-card p {
    margin: 0;
    color: var(--text-light);
    flex-grow: 1;
    line-height: 1.6;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    width: fit-content;
    border: 2px solid transparent;
}

.project-link:hover {
    background: linear-gradient(135deg, var(--primary-dark), #0f1f47);
    transform: translateX(4px);
    box-shadow: 0 8px 20px rgba(30, 64, 175, 0.25);
    color: white;
    text-decoration: none;
}

.project-link:focus {
    outline: 2px solid var(--focus-color);
    outline-offset: 2px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

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

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

@media print {
    body {
        background-color: white;
    }

    header,
    .contact-section,
    footer {
        display: none;
    }

    a {
        text-decoration: underline;
    }
}