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

:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-color);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

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

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

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

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

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

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 2;
}

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

.hero-text {
    color: white;
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    animation: slideInLeft 1s ease-out;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    animation: slideInLeft 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    animation: slideInLeft 1s ease-out 0.4s both;
}

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    animation: slideInRight 1s ease-out 0.6s both;
}

.hero-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: 20px;
    text-align: center;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

/* Section Styles */
section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    text-align: justify;
    color: var(--text-secondary);
}

/* Skills Section - UPDATED WITH SLIDER */
.skills {
    background: var(--bg-secondary);
}

.skills-content-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: stretch;
    margin-bottom: var(--spacing-2xl);
}

.skills-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 16px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.skills-card h3 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Core Skills (Left Column) */
.skills-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.skills-list li {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.skills-list li:hover {
    color: var(--primary-color);
    transform: translateX(10px);
}

.skills-list li:last-child {
    border-bottom: none;
}

/* Software Slider Section */
.software-slider-section {
    margin-top: var(--spacing-xl);
}

.software-title {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.software-slider {
    overflow: hidden;
    position: relative;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: var(--spacing-lg) 0;
}

.software-track {
    display: flex;
    animation: slide 20s linear infinite;
    gap: var(--spacing-lg);
}

@keyframes slide {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.software-item-slider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 250px;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: 12px;
    flex-shrink: 0;
    transition: var(--transition);
}

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

.software-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 8px;
    flex-shrink: 0;
}

.software-icon img {
    max-width: 40px;
    max-height: 40px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.software-info h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.software-info p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Project Cards - WITH IMAGES */
.projects-grid-small {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-sm);
    justify-items: center;
    margin-bottom: var(--spacing-xl);
}

.project-card-small {
    background: white;
    border-radius: 12px;
    padding: 0;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 220px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

.project-card-small:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.project-card-small:hover .card-overlay {
    opacity: 1;
}

/* Project Image Container */
.project-image-small {
    width: 100%;
    height: 100px;
    overflow: hidden;
    border-radius: 12px 12px 0 0;
    position: relative;
}

.project-image-small img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition);
}

.project-card-small:hover .project-image-small img {
    transform: scale(1.05);
}

.project-card-small h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin: var(--spacing-sm) var(--spacing-md) var(--spacing-xs);
    color: var(--text-primary);
    line-height: 1.3;
}

.project-card-small p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.4;
    margin: 0 var(--spacing-md) var(--spacing-md);
    flex: 1;
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

/* Modal Styles - TWO COLUMN LAYOUT */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
}

.modal-content {
    background-color: white;
    margin: 2% auto;
    padding: 0;
    border-radius: 20px;
    width: 95%;
    max-width: 1200px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.4s ease-out;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-lg);
    border-radius: 20px 20px 0 0;
    text-align: center;
}

.modal-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    line-height: 1.3;
    margin: 0;
}

/* Modal Body Split Layout */
.modal-body-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    min-height: 500px;
}

/* Left Side - Image */
.modal-left {
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: top;
    justify-content: center;
}

.modal-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Right Side - Content */
.modal-right {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.modal-content-text {
    height: 100%;
    overflow-y: auto;
}

.modal-content-text p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--font-size-base);
}

.modal-content-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.modal-content-text ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.modal-content-text li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

.close {
    position: absolute;
    top: 15px;
    right: 25px;
    color: white;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2001;
    transition: var(--transition-fast);
}

.close:hover {
    opacity: 0.7;
    transform: scale(1.1);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-lg) 0 0 0;
}

.tag {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 2px solid var(--primary-color);
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.contact-content h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.contact-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    justify-content: center;
}

.contact-icon {
    font-size: 1.5rem;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.footer-content p {
    margin-bottom: var(--spacing-sm);
    opacity: 0.8;
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .projects-grid-small {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }

    .skills-content-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .skills-card {
        min-height: auto;
    }

    .software-track {
        animation-duration: 15s;
    }

    /* Stack modal columns on tablet */
    .modal-body-split {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .modal-left {
        order: 1;
        padding: var(--spacing-md);
    }

    .modal-right {
        order: 2;
        padding: var(--spacing-md);
    }

    .modal-image img {
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: var(--spacing-lg) 0;
    }

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

    .hamburger {
        display: flex;
    }

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

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

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

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

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

    .projects-grid-small {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills-content-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 98%;
        margin: 1% auto;
        max-height: 95vh;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }

    .modal-header h2 {
        font-size: var(--font-size-xl);
    }

    .modal-body-split {
        grid-template-columns: 1fr;
    }

    .modal-left,
    .modal-right {
        padding: var(--spacing-md);
    }

    .modal-image img {
        max-height: 250px;
    }

    .software-track {
        animation-duration: 12s;
    }

    .software-item-slider {
        min-width: 200px;
    }
}

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

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .modal-header {
        padding: var(--spacing-sm);
    }
    
    .modal-header h2 {
        font-size: var(--font-size-lg);
    }

    .modal-left,
    .modal-right {
        padding: var(--spacing-sm);
    }

    .modal-image img {
        max-height: 200px;
    }

    .skills-card {
        padding: var(--spacing-lg);
    }

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

    .software-track {
        animation-duration: 10s;
    }

    .software-item-slider {
        min-width: 180px;
    }
}

/* Scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}