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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* CSS Variables for Classic Blue Theme */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --accent-blue: #0f172a;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --gray-100: #f8fafc;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --section-padding: 80px 0;
    --container-max-width: 1200px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    line-height: 1.3;
}

h3 {
    font-size: 1.5rem;
    line-height: 1.4;
}

p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--accent-blue);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: 0;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-blue);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px 0;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--light-blue) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><circle cx="200" cy="200" r="3" fill="%23e2e8f0" opacity="0.5"/><circle cx="800" cy="300" r="2" fill="%23cbd5e1" opacity="0.3"/><circle cx="400" cy="600" r="2" fill="%23e2e8f0" opacity="0.4"/><circle cx="600" cy="800" r="3" fill="%23cbd5e1" opacity="0.2"/></svg>');
    animation: float 20s infinite linear;
}

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

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    margin-bottom: 1rem;
    animation: slideInFromLeft 1s ease-out;
}

.hero-content .greeting {
    opacity: 0;
    animation: fadeIn 0.8s ease-out 0.5s forwards;
}

.hero-content .highlight {
    color: var(--primary-blue);
    position: relative;
    animation: slideInFromRight 1s ease-out 0.3s both;
}

.hero-content .highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    animation: underlineExpand 1s ease-out 1.5s forwards;
}

@keyframes underlineExpand {
    to { width: 100%; }
}

.hero-content h2 {
    color: var(--secondary-blue);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 500px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1.2s forwards;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-profile {
    position: relative;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3);
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.hero-profile:hover {
    transform: scale(1.05);
    box-shadow: 0 25px 50px rgba(30, 58, 138, 0.4);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.8), rgba(59, 130, 246, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    font-size: 3rem;
    color: var(--white);
}

.hero-profile:hover .hero-overlay {
    opacity: 1;
}

@keyframes pulse {
    0% { box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3); }
    50% { box-shadow: 0 25px 50px rgba(30, 58, 138, 0.4); }
    100% { box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3); }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    margin-bottom: 0.5rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* About Section */
.about {
    padding: var(--section-padding);
    background-color: var(--white);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-text h3 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.about-text h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 2px;
}

.about-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    position: relative;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-100) 100%);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    transform: translateX(-100%);
    transition: var(--transition);
}

.stat:hover::before {
    transform: translateX(0);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.stat h4 {
    font-size: 2.2rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0;
    font-weight: 500;
}

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

.about-visual {
    position: relative;
    width: 280px;
    height: 350px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.3);
    transition: var(--transition);
}

.about-visual:hover {
    transform: translateY(-10px) rotate(2deg);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.4);
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.about-visual:hover .about-img {
    transform: scale(1.1);
}

.about-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.8), rgba(30, 58, 138, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--white);
    opacity: 0;
    transition: var(--transition);
}

.about-visual:hover .about-overlay {
    opacity: 1;
}

/* Skills Section */
.skills {
    padding: var(--section-padding);
    background-color: var(--gray-100);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-item {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.skill-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.skill-item h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.skill-item p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* Portfolio Section */
.portfolio {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
    position: relative;
}

.portfolio::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><polygon points="0,0 100,0 80,100 0,100" fill="%23f8fafc" opacity="0.3"/></svg>');
    background-size: 200px 200px;
    animation: slidePattern 15s linear infinite;
}

@keyframes slidePattern {
    0% { background-position: 0 0; }
    100% { background-position: 200px 200px; }
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    position: relative;
    z-index: 1;
}

.portfolio-item {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    position: relative;
    transform-style: preserve-3d;
}

.portfolio-item:hover {
    transform: translateY(-10px) rotateY(5deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.portfolio-image {
    height: 240px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-200), var(--gray-100));
}

.portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.9), rgba(59, 130, 246, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

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

.portfolio-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    font-size: 1.2rem;
}

.portfolio-link:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.portfolio-content {
    padding: 2rem 1.5rem;
    position: relative;
}

.portfolio-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 1.5rem;
    right: 1.5rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.portfolio-content h3 {
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
    position: relative;
}

.portfolio-content p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
    color: var(--text-light);
}

.portfolio-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: linear-gradient(135deg, var(--light-blue), rgba(59, 130, 246, 0.1));
    color: var(--primary-blue);
    padding: 0.4rem 1rem;
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: var(--transition);
}

.tag:hover {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    transform: translateY(-2px);
}

/* Contact Section */
.contact {
    padding: var(--section-padding);
    background-color: var(--gray-100);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.contact-info p {
    margin-bottom: 2rem;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    width: 30px;
}

.contact-item h4 {
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--text-light);
    margin-bottom: 0;
}

.contact-form {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background-color: var(--accent-blue);
    color: var(--white);
    padding: 2rem 0 1rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-left h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.footer-left p {
    color: var(--gray-300);
    margin-bottom: 0;
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--secondary-blue);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--primary-blue);
}

.footer-bottom p {
    color: var(--gray-300);
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Hero Section */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-graphic {
        width: 200px;
        height: 200px;
        font-size: 2.5rem;
    }

    /* About Section */
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Skills Section */
    .skills-grid {
        grid-template-columns: 1fr;
    }

    /* Portfolio Section */
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    /* Contact Section */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

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

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

/* Smooth scrolling for anchor links */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* Focus styles for accessibility */
.nav-link:focus,
.btn:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Advanced Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.hero-content,
.about-content,
.skill-item,
.portfolio-item {
    animation: fadeInUp 0.8s ease-out;
}

/* Elegant hover effects */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.btn:hover::before {
    left: 100%;
}

/* Skill item enhanced animations */
.skill-item {
    position: relative;
    overflow: hidden;
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.skill-item:hover::before {
    transform: scaleX(1);
}

/* Enhanced section transitions */
.section-header {
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 2px;
}