/* ==========================================
   GLOBAL STYLES & VARIABLES
   ========================================== */

:root {
    /* Color Palette - Professional & Modern */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #0f172a;
    --accent-color: #10b981;
    
    /* Neutral Colors */
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --background: #ffffff;
    --background-alt: #f8fafc;
    --background-dark: #1e293b;
    --border-color: #e2e8f0;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

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

.section-title {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 2.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.section-description {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    font-size: 1rem;
}

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

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

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

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* ==========================================
   NAVIGATION
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

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

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

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

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

/* ==========================================
   HERO SECTION
   ========================================== */

/* ==========================================
   HERO SECTION - LINKEDIN STYLE
   ========================================== */

.hero {
    padding-top: 70px;
    background-color: var(--background-alt);
    position: relative;
}

.linkedin-banner {
    width: 100%;
    height: 320px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.banner-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
}

.linkedin-profile-section {
    position: relative;
    margin-top: -140px;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.profile-photo-container {
    width: 200px;
    height: 200px;
    margin: 0 0 1.5rem 2rem;
    position: relative;
}

.profile-photo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid white;
    box-shadow: var(--shadow-xl);
    background-color: white;
}

.profile-info {
    padding: 0 2rem;
}

.profile-name {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.profile-headline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
    line-height: 1.4;
}

.profile-location,
.profile-company,
.profile-education {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.profile-location i,
.profile-company i,
.profile-education i {
    color: var(--primary-color);
    width: 20px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1100px;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

.greeting {
    display: block;
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.name {
    display: block;
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.25rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--background-alt);
    color: var(--text-primary);
    font-size: 1.25rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

/* ==========================================
   ABOUT SECTION
   ========================================== */

.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--background);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.intro-text {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-text p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.highlight-card {
    padding: 2rem;
    background-color: var(--background-alt);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.highlight-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.highlight-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.highlight-card ul {
    list-style: none;
}

.highlight-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.highlight-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* ==========================================
   EXPERIENCE SECTION
   ========================================== */

.experience {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-alt);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 3px solid var(--background-alt);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.timeline-content {
    background-color: var(--background);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.timeline-header {
    margin-bottom: 1.5rem;
}

.timeline-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.company {
    display: block;
    font-size: 1.125rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-date {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    background-color: var(--background-alt);
    border-radius: var(--radius-sm);
    margin-right: 0.5rem;
}

.location {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.role-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-style: italic;
}

.achievements {
    list-style: none;
    margin-bottom: 1.5rem;
}

.achievements li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: flex-start;
}

.achievements i {
    color: var(--accent-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

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

.tag {
    padding: 0.375rem 0.75rem;
    background-color: var(--background-alt);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* ==========================================
   PROJECTS SECTION
   ========================================== */

.projects {
    padding: var(--spacing-xl) 0;
    background-color: var(--background);
}

.projects-header-banner {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 4rem;
    box-shadow: var(--shadow-xl);
}

.section-banner-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.section-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.85), rgba(30, 64, 175, 0.85));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.section-banner-overlay .section-title::after {
    background: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.project-card {
    background-color: var(--background);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.project-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.project-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.project-icon i {
    font-size: 1.5rem;
    color: white;
}

.project-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    line-height: 1.3;
}

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

.project-details {
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.detail-section {
    margin-bottom: 1.5rem;
}

.detail-section h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.detail-section p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.impact-list {
    list-style: none;
}

.impact-list li {
    padding: 0.375rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.impact-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--background-alt);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.project-link:hover {
    background-color: var(--primary-color);
    color: white;
}

.more-projects {
    text-align: center;
    margin-top: 4rem;
}

.more-projects h3 {
    margin-bottom: 2rem;
}

.small-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    max-width: 1000px;
    margin: 0 auto;
}

.small-project {
    padding: 1.5rem;
    background-color: var(--background-alt);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-fast);
}

.small-project:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.02);
}

.small-project i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.small-project:hover i {
    color: white;
}

/* ==========================================
   KAGGLE SECTION
   ========================================== */

.kaggle {
    padding: var(--spacing-xl) 0;
    background-color: var(--background);
}

.kaggle-header {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.kaggle-profile-card {
    background: linear-gradient(135deg, #20BEFF, #1E88E5);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    color: white;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.kaggle-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.kaggle-icon i {
    font-size: 3rem;
    color: white;
}

.kaggle-info h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.kaggle-username {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
}

.kaggle-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: white;
    color: #1E88E5;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-normal);
}

.kaggle-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.kaggle-stat-card {
    background-color: var(--background-alt);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.kaggle-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.kaggle-stat-card i {
    font-size: 2rem;
    color: #20BEFF;
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.kaggle-sections {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.kaggle-section h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.kaggle-section h3 i {
    font-size: 1.5rem;
}

.kaggle-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.kaggle-project-card {
    background-color: var(--background-alt);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border-left: 4px solid #20BEFF;
}

.kaggle-project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--primary-color);
}

.project-badge {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #20BEFF, #1E88E5);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.project-badge i {
    font-size: 1.5rem;
    color: white;
}

.kaggle-project-card h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.kaggle-project-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.kaggle-tag {
    padding: 0.375rem 0.75rem;
    background-color: rgba(32, 190, 255, 0.1);
    color: #1E88E5;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

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

.kaggle-skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--background-alt);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.kaggle-skill-item:hover {
    background-color: #20BEFF;
    color: white;
    transform: translateX(5px);
}

.kaggle-skill-item i {
    font-size: 1.5rem;
    color: #20BEFF;
}

.kaggle-skill-item:hover i {
    color: white;
}

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

.expertise-card {
    background-color: var(--background-alt);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.expertise-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.expertise-card h4 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.expertise-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.kaggle-cta {
    margin-top: 4rem;
}

.kaggle-image-banner {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.banner-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(16, 185, 129, 0.8));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: 2rem;
}

.banner-overlay h3 {
    font-size: 2rem;
    color: white;
    margin-bottom: 1rem;
}

.banner-overlay p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2rem;
    max-width: 600px;
}

/* ==========================================
   PUBLICATIONS SECTION
   ========================================== */

.publications {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-alt);
}

.scholar-profile-banner {
    background: linear-gradient(135deg, #4285F4, #34A853);
    border-radius: var(--radius-xl);
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    color: white;
}

.scholar-banner-content {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.scholar-icon {
    width: 100px;
    height: 100px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.scholar-icon i {
    font-size: 3.5rem;
    color: white;
}

.scholar-info {
    flex: 1;
}

.scholar-info h3 {
    font-size: 2rem;
    color: white;
    margin-bottom: 0.5rem;
}

.scholar-username {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1.5rem;
}

.scholar-metrics {
    display: flex;
    gap: 3rem;
    margin-bottom: 2rem;
}

.metric-item {
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.scholar-info .btn-primary {
    background-color: white;
    color: #4285F4;
}

.scholar-info .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

.publications-list {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.publication-card {
    display: flex;
    gap: 2rem;
    background-color: var(--background);
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border-left: 4px solid var(--primary-color);
}

.publication-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.pub-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
    opacity: 0.3;
    flex-shrink: 0;
    width: 60px;
}

.pub-content h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.pub-authors {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.pub-venue {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 0.25rem;
}

.pub-publisher {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
}

.pub-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
}

.pub-link:hover {
    text-decoration: underline;
}

.publication-cta {
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ==========================================
   SKILLS SECTION
   ========================================== */

.skills {
    padding: var(--spacing-xl) 0;
    background-color: var(--background);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.skill-category {
    background-color: var(--background-alt);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.category-header i {
    font-size: 1.75rem;
    color: var(--primary-color);
}

.category-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.skill-level {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

.skill-bar {
    height: 8px;
    background-color: var(--background);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-sm);
    transition: width 1s ease;
}

.domain-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.domain-tag {
    padding: 0.5rem 1rem;
    background-color: var(--background);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: 2px solid var(--primary-color);
    transition: var(--transition-fast);
}

.domain-tag:hover {
    background-color: var(--primary-color);
    color: white;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background-color: var(--background);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.tool-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.tool-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.tool-item:hover i {
    color: white;
}

/* ==========================================
   EDUCATION SECTION
   ========================================== */

.education {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-alt);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.education-card {
    background-color: var(--background);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border-top: 4px solid var(--primary-color);
}

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

.edu-header {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.edu-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.edu-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.location, .duration {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.edu-details p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.specialization, .grade, .thesis {
    line-height: 1.6;
}

.key-courses, .achievements {
    margin-top: 1.5rem;
}

.key-courses h4, .achievements h4 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.key-courses ul, .achievements ul {
    list-style: none;
}

.key-courses li, .achievements li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.key-courses li::before, .achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* ==========================================
   CONTACT SECTION
   ========================================== */

.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--background);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto 4rem;
}

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

.contact-card {
    padding: 1.5rem;
    background-color: var(--background-alt);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.contact-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.contact-card a, .contact-card p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.contact-links h3 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.platform-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.platform-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background-color: var(--background-alt);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.platform-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.platform-link i {
    font-size: 1.75rem;
    color: var(--primary-color);
    transition: var(--transition-fast);
}

.platform-link:hover i {
    color: white;
}

.platform-link span {
    font-weight: 600;
    font-size: 1.125rem;
}

.platform-link small {
    display: block;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    opacity: 0.8;
}

.cta-section {
    text-align: center;
    padding: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-lg);
    color: white;
    max-width: 700px;
    margin: 0 auto;
}

.cta-section h3 {
    color: white;
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

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

.cta-section .btn-primary:hover {
    background-color: var(--background-alt);
    transform: translateY(-3px);
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    background-color: var(--background-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 1.5rem;
}

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

.footer-about h3, .footer-links h4, .footer-social h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.7);
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

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

.footer-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transition: var(--transition-normal);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    z-index: 999;
}

.scroll-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.scroll-to-top.visible {
    display: flex;
}

/* ==========================================
   ANIMATIONS
   ========================================== */

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

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

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 968px) {
    html { font-size: 15px; }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition-normal);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .linkedin-banner {
        height: 240px;
    }
    
    .linkedin-profile-section {
        margin-top: -100px;
    }
    
    .profile-photo-container {
        width: 160px;
        height: 160px;
        margin-left: 1rem;
    }
    
    .profile-name {
        font-size: 2rem;
    }
    
    .profile-headline {
        font-size: 1.125rem;
    }
    
    .profile-info {
        padding: 0 1rem;
    }
    
    .name {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .kaggle-header {
        grid-template-columns: 1fr;
    }
    
    .kaggle-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .scholar-banner-content {
        flex-direction: column;
        text-align: center;
    }
    
    .scholar-metrics {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    html { font-size: 14px; }
    
    .container {
        padding: 0 1rem;
    }
    
    .linkedin-banner {
        height: 180px;
    }
    
    .linkedin-profile-section {
        margin-top: -80px;
    }
    
    .profile-photo-container {
        width: 140px;
        height: 140px;
    }
    
    .profile-name {
        font-size: 1.75rem;
    }
    
    .profile-headline {
        font-size: 1rem;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .about-highlights,
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 3rem;
    }
    
    .kaggle-projects,
    .expertise-grid,
    .kaggle-skills-grid {
        grid-template-columns: 1fr;
    }
    
    .scholar-metrics {
        gap: 1.5rem;
    }
    
    .banner-overlay h3 {
        font-size: 1.5rem;
    }
    
    .publication-card {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pub-number {
        font-size: 1.5rem;
    }
}

/* ==========================================
   PRINT STYLES
   ========================================== */

@media print {
    .navbar,
    .social-links,
    .hero-cta,
    .scroll-to-top,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
    }
    
    .section-title {
        page-break-after: avoid;
    }
    
    .project-card,
    .publication-card,
    .timeline-item {
        page-break-inside: avoid;
    }
}