/* ========================================
   Global Styles & CSS Variables
   ======================================== */

:root {
    /* Color Palette - Sophisticated & Modern */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #8b5cf6;
    --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-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Poppins', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 15px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

/* ========================================
   Utility Classes
   ======================================== */

.section-padding {
    padding: var(--section-padding);
}

.section-header {
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 20px;
}

/* ========================================
   Navigation Bar
   ======================================== */

.navbar {
    padding: 1.2rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.navbar.scrolled {
    padding: 0.8rem 0;
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.brand-text {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.5rem 1.2rem;
    margin: 0 0.3rem;
    position: relative;
    transition: var(--transition-base);
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: var(--primary-color);
    transition: transform var(--transition-base);
}

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

.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before {
    transform: translateX(-50%) scaleX(1);
}

.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

/* ========================================
   Hero Section
   ======================================== */

.hero-section {
    position: relative;
    margin-top: 25px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(37,99,235,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease;
    
}

.hero-greeting {
    font-size: 1.3rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 10px;
}

.hero-name {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-role {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 25px;
    min-height: 60px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 35px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    color: var(--text-primary);
    border-radius: 50%;
    font-size: 1.2rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.hero-image {
    position: relative;
    z-index: 2;
}

.image-wrapper {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.floating-image {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    animation: float 6s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

.image-decoration {
    position: absolute;
    top: 30px;
    left: 30px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-color);
    border-radius: 20px;
    z-index: 1;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--primary-color);
    font-size: 2rem;
}

/* ========================================
   About Section
   ======================================== */

.about-section {
    background: var(--bg-secondary);
}

.about-heading {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: var(--text-primary);
    margin-bottom: 25px;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.personal-info {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.info-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

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

.info-item strong {
    color: var(--text-primary);
    margin-right: 10px;
}

.info-item span {
    color: var(--text-secondary);
}

.service-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    height: 100%;
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h4 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ========================================
   Projects Section
   ======================================== */

.projects-section {
    background: var(--bg-primary);
}

.project-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
    background: var(--bg-secondary);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-links {
    display: flex;
    gap: 20px;
}

.project-link {
    width: 50px;
    height: 50px;
    background: white;
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-base);
}

.project-link:hover {
    transform: scale(1.15);
    background: var(--accent-color);
    color: white;
}

.project-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-badge {
    padding: 6px 14px;
    background: var(--bg-secondary);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* ========================================
   Skills Section
   ======================================== */

.skills-section {
    background: var(--bg-secondary);
}

.skill-category {
    background: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    height: 100%;
}

.category-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
}

.skill-item {
    margin-bottom: 25px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.skill-percentage {
    font-weight: 600;
    color: var(--primary-color);
}

.progress-bar {
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent
    );
    animation: shimmer 2s infinite;
}

.progress-fill.animated {
    width: var(--progress-width);
}

/* ========================================
   Contact Section
   ======================================== */

.contact-section {
    background: var(--bg-primary);
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    position: relative;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    display: block;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: all var(--transition-base);
    font-family: var(--font-body);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control.error {
    border-color: #ef4444;
}

.error-message {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}

.form-control.error + .error-message {
    display: block;
}

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

.btn-submit {
    padding: 15px 50px;
    font-size: 1.1rem;
}

.form-status {
    text-align: center;
    padding: 15px;
    border-radius: 10px;
    display: none;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.form-status.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

.contact-info {
    margin-top: 50px;
}

.contact-item {
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.contact-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-item h4 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

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

.contact-social {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 10px;
}

.contact-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.contact-social a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--bg-dark);
    color: white;
    padding: 30px 0;
    text-align: center;
}

.footer-content p {
    margin: 5px 0;
    color: rgba(255, 255, 255, 0.7);
}

.footer-content i {
    color: #ef4444;
    margin: 0 5px;
}

/* ========================================
   Animations
   ======================================== */

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

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

/* Fade-in animation for sections */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}