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

:root {
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-900: #111827;
    --white: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: var(--gray-900);
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 50;
    transition: all 0.3s;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-600);
    text-decoration: none;
}

.desktop-nav {
    display: none;
}

.desktop-nav a {
    color: var(--gray-700);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
    margin-left: 0.5rem;
}

.desktop-nav a:hover {
    color: var(--primary-600);
}

.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    color: var(--gray-700);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn:hover {
    color: var(--primary-600);
}

.mobile-nav {
    display: none;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.5rem 0;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-link {
    display: block;
    color: var(--gray-700);
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    font-size: 1rem;
    font-weight: 500;
    transition: color 0.2s;
}

.mobile-nav-link:hover {
    color: var(--primary-600);
    background: var(--primary-50);
}

@media (min-width: 768px) {
    .desktop-nav {
        display: flex;
        align-items: baseline;
    }
    
    .mobile-menu-btn {
        display: none;
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to bottom right, var(--primary-50), var(--white), var(--primary-50));
    padding: 5rem 0;
    text-align: center;
}

.hero-content {
    max-width: 1280px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: bold;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--primary-600);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-500);
    margin-bottom: 3rem;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.social-links a {
    color: var(--gray-700);
    font-size: 2rem;
    transition: color 0.2s;
}

.social-links a:hover {
    color: var(--primary-600);
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 5rem;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    text-align: center;
}

.btn-primary {
    background: var(--primary-600);
    color: var(--white);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background: var(--primary-700);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    border: 2px solid var(--primary-600);
    color: var(--primary-600);
}

.btn-outline:hover {
    background: var(--primary-600);
    color: var(--white);
}

.btn-full {
    width: 100%;
}

.scroll-indicator {
    margin-top: 5rem;
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--gray-400);
    font-size: 1.5rem;
    transition: color 0.2s;
}

.scroll-indicator a:hover {
    color: var(--primary-600);
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 4.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.875rem;
    }
}

@media (min-width: 1024px) {
    .hero h1 {
        font-size: 5rem;
    }
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: bold;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section-divider {
    width: 6rem;
    height: 0.25rem;
    background: var(--primary-600);
    margin: 0 auto;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-top: 1.5rem;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .section-header h2 {
        font-size: 3rem;
    }
}

/* About Section */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.skills-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Projects Section */
.projects {
    background: linear-gradient(to bottom right, var(--primary-50), var(--white));
}

.projects-grid {
    display: grid;
    gap: 2rem;
}

.project-card {
    background: var(--white);
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    transition: box-shadow 0.3s;
}

.project-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.project-card h3 {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.project-card p {
    color: var(--gray-600);
    margin-bottom: 1rem;
}

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

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    color: var(--gray-700);
    text-decoration: none;
    transition: color 0.2s;
}

.project-link:hover {
    color: var(--primary-600);
}

.project-link i {
    margin-right: 0.5rem;
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Contact Section */
.contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    gap: 3rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.contact-item i {
    color: var(--primary-600);
    margin-top: 0.25rem;
    margin-right: 1rem;
    font-size: 1.25rem;
}

.contact-label {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--gray-600);
    text-decoration: none;
    transition: color 0.2s;
}

.contact-item a:hover {
    color: var(--primary-600);
}

.contact-item p {
    color: var(--gray-600);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.5rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: transparent;
    box-shadow: 0 0 0 2px var(--primary-600);
}

.form-status {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.form-status.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

@media (min-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }
}