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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --background: #ffffff;
    --surface: #f8fafc;
    --border: #e5e7eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

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

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

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

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: -50px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    min-width: 320px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-xl);
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.project-card {
    padding: 1rem;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.project-card:hover {
    background: rgba(37, 99, 235, 0.05);
}

.project-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.status {
    background: var(--gradient-3);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 1rem;
}

.project-link {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    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"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, #ffffff, #e0e7ff);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Floating Cards */
.floating-cards {
    position: relative;
    height: 400px;
}

.card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    width: 200px;
    text-align: center;
    transition: all 0.3s ease;
    animation: float 6s ease-in-out infinite;
}

.card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-1 {
    top: 0px;
    left: 0px;
    animation-delay: 0s;
    z-index: 3;
}

.card-2 {
    top: 100px;
    right: 0px;
    animation-delay: 2s;
    z-index: 2;
}

.card-3 {
    bottom: 0px;
    left: 150px;
    animation-delay: 4s;
    z-index: 1;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.card p {
    font-size: 0.9rem;
    opacity: 0.8;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--surface);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.about-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.about-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.about-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Projects Preview */
.projects-preview {
    padding: 6rem 0;
}

.project-showcase {
    max-width: 1000px;
    margin: 0 auto;
}

.project-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.project-preview:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

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

.project-image .phone-mockup {
    position: relative;
    width: 300px;
    height: 651px;
    background: linear-gradient(145deg, #5c5c60, #4a4a4e);
    border-radius: 50px;
    padding: 8px;
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 8px 16px rgba(0, 0, 0, 0.3),
        0 16px 32px rgba(0, 0, 0, 0.2),
        0 32px 64px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    transform: perspective(1000px) rotateX(3deg);
}

.project-image .phone-mockup:hover {
    transform: perspective(1000px) rotateX(0deg) scale(1.02);
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.15),
        0 12px 24px rgba(0, 0, 0, 0.4),
        0 24px 48px rgba(0, 0, 0, 0.3),
        0 48px 96px rgba(0, 0, 0, 0.2);
}

/* Dynamic Island */
.project-image .phone-mockup::before {
    content: '';
    position: absolute;
    top: 22px;
    left: 50%;
    transform: translateX(-50%);
    width: 105px;
    height: 32px;
    background: #000;
    border-radius: 16px;
    z-index: 3;
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.02);
}

/* Screen bezel */
.project-image .phone-mockup::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    background: #000;
    border-radius: 42px;
    z-index: 1;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 42px;
    position: relative;
    z-index: 2;
}

.project-status {
    background: var(--gradient-3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 1rem;
}

.project-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.project-features {
    list-style: none;
    margin-bottom: 2rem;
}

.project-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--surface);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: 1.5rem;
    background: var(--gradient-1);
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-content {
    flex: 1;
}

.contact-item h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

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

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

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
    
    .nav-container {
        padding: 0 2rem;
    }
    
    .project-image .phone-mockup {
        width: 275px;
        height: 597px;
    }
    
    .project-image .phone-mockup::before {
        width: 96px;
        height: 30px;
        top: 20px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .floating-cards {
        position: static;
        display: flex;
        justify-content: center;
        gap: 2rem;
        margin-top: 2rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .project-preview {
        flex-direction: column;
        text-align: center;
    }
    
    .project-image .phone-mockup {
        width: 250px;
        height: 543px;
        transform: none;
    }
    
    .project-image .phone-mockup::before {
        width: 88px;
        height: 27px;
        top: 18px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .nav-container {
        padding: 0 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .project-image .phone-mockup {
        width: 220px;
        height: 477px;
    }
    
    .project-image .phone-mockup::before {
        width: 77px;
        height: 24px;
        top: 16px;
    }
    
    .project-image img {
        border-radius: 37px;
    }
    
    .contact-item {
        padding: 1rem;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
    }
    
    .contact-item h3 {
        font-size: 1.1rem;
    }
}

@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
    
    .project-image .phone-mockup {
        width: 320px;
        height: 694px;
    }
    
    .project-image .phone-mockup::before {
        width: 112px;
        height: 34px;
        top: 23px;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection styles */
::selection {
    background: rgba(37, 99, 235, 0.2);
    color: var(--text-primary);
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading animation */
.loading {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

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