/* CSS Variables for modern theming */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #f1f5f9;
    --shadow: 0 10px 25px rgba(0,0,0,0.1);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--light-bg) 0%, #e2e8f0 100%);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    color: var(--text-light);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

nav h1 {
    font-size: 1.8rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

/* Hero Section */
#hero {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%);
    color: var(--text-light);
    padding: 150px 0 100px;
    text-align: 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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.05)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

#hero .container {
    position: relative;
    z-index: 1;
}

#hero h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

#hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.btn i {
    transition: var(--transition);
}

.btn:hover i {
    transform: translateX(3px);
}

/* Sections */
section {
    padding: 80px 0;
    position: relative;
}

section:nth-child(even) {
    background: rgba(255,255,255,0.5);
    backdrop-filter: blur(10px);
}

section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: var(--text-primary);
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* About */
#about {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 80px 0;
}

#about .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

#about h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

#about h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* About Content */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-align: justify;
}

.about-text p:last-child {
    margin-bottom: 0;
}

#about .highlight {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(248,250,252,0.95) 100%);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat p {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
}

/* Projects */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.2);
}

.project:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

.project:hover .btn {
    transform: none;
}

.project h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.4rem;
}

.project p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project .btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    position: relative;
    z-index: 10;
    pointer-events: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.9) 100%);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.2);
}

.skill-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

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

.skill-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* Contact */
#contact {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%);
    color: var(--text-light);
}

#contact h2 {
    color: var(--text-light);
}

#contact h2::after {
    background: linear-gradient(45deg, var(--accent-color), var(--primary-color));
}

#contact p {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

#contact .contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.contact-item p {
    color: rgba(241,245,249,0.8);
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.testimonial {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.2);
    position: relative;
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.2;
    font-family: 'Playfair Display', serif;
}

.testimonial p {
    font-style: italic;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    padding-left: 2rem;
    color: var(--text-secondary);
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.testimonial-author h5 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.testimonial-author span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
}

/* Footer */
footer {
    background: var(--dark-bg);
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }

    #hero h2 {
        font-size: 3rem;
    }

    .about-content {
        gap: 3rem;
    }

    #about h2 {
        font-size: 2.2rem;
        margin-bottom: 2.5rem;
    }

    .about-text p {
        font-size: 1rem;
        text-align: left;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }

    #hero {
        padding: 120px 0 80px;
    }

    #hero h2 {
        font-size: 2.5rem;
        line-height: 1.1;
    }

    #hero p {
        font-size: 1.1rem;
        max-width: 100%;
    }

    nav .container {
        flex-direction: column;
        align-items: flex-start;
    }

    nav h1 {
        margin-bottom: 1rem;
    }

    nav ul {
        gap: 1rem;
        flex-wrap: wrap;
    }

    nav ul li a {
        padding: 0.5rem 1rem;
        border-radius: 20px;
        transition: var(--transition);
    }

    nav ul li a:hover {
        background: rgba(255,255,255,0.1);
    }

    #about .container {
        padding: 0 15px;
    }

    #about h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 1rem;
    }

    .about-text p {
        font-size: 1rem;
        line-height: 1.7;
        text-align: left;
        margin-bottom: 1.2rem;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-around;
        gap: 1rem;
        margin-top: 1rem;
    }

    .stat {
        padding: 1.5rem 1rem;
        flex: 1;
        min-width: 0;
    }

    .stat h3 {
        font-size: 2rem;
        margin-bottom: 0.3rem;
    }

    .stat p {
        font-size: 0.9rem;
    }

    section {
        padding: 60px 0;
    }

    section h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .project-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .project {
        padding: 1.5rem;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
    }

    .skill-card {
        padding: 1.5rem;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .testimonial {
        padding: 2rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-item {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    #hero h2 {
        font-size: 2rem;
    }

    #hero p {
        font-size: 1rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    nav ul {
        gap: 0.5rem;
    }

    nav ul li a {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }

    section h2 {
        font-size: 1.8rem;
    }

    #about h2 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .about-content {
        gap: 1.5rem;
    }

    .about-text p {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .stat h3 {
        font-size: 1.5rem;
    }

    .stat p {
        font-size: 0.9rem;
    }

    .skill-card h4 {
        font-size: 1.1rem;
    }

    .skill-card p {
        font-size: 0.9rem;
    }

    .testimonial p {
        font-size: 0.95rem;
        padding-left: 1.5rem;
    }

    .testimonial::before {
        font-size: 3rem;
        left: 1rem;
    }

    .contact-item h4 {
        font-size: 1.1rem;
    }

    footer {
        padding: 1.5rem 0;
        font-size: 0.9rem;
    }
}

@media (max-width: 375px) {
    .container {
        padding: 0 8px;
    }

    #hero {
        padding: 100px 0 60px;
    }

    #hero h2 {
        font-size: 1.8rem;
    }

    #hero p {
        font-size: 0.95rem;
    }

    nav h1 {
        font-size: 1.5rem;
    }

    nav ul {
        justify-content: center;
    }

    section {
        padding: 40px 0;
    }

    #about {
        padding: 50px 0;
    }

    #about h2 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }

    .about-content {
        gap: 1rem;
    }

    .about-text p {
        font-size: 0.9rem;
        line-height: 1.5;
        margin-bottom: 1rem;
    }

    .about-stats {
        gap: 0.8rem;
    }

    .stat {
        padding: 1rem 0.5rem;
    }

    .stat h3 {
        font-size: 1.3rem;
        margin-bottom: 0.2rem;
    }

    .stat p {
        font-size: 0.8rem;
    }

    .project {
        padding: 1rem;
    }

    .skill-card {
        padding: 1rem;
    }

    .testimonial {
        padding: 1.5rem;
    }

    .contact-item {
        padding: 1rem;
    }
}