/* ===================================
   GLOBAL STYLES & RESET
   =================================== */

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

:root {
    /* Primary Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    
    /* Neutral Colors */
    --dark-bg: #0f172a;
    --dark-secondary: #1e293b;
    --dark-tertiary: #334155;
    --light-text: #f8fafc;
    --gray-text: #cbd5e1;
    --gray-light: #94a3b8;
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Z-Index */
    --z-navbar: 1000;
    --z-scroll-top: 999;
    --z-modal: 1100;
}

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

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

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

.section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) 0;
    z-index: var(--z-navbar);
    transition: all var(--transition-medium);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.98);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs) 0;
}

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

.nav-brand .logo-text {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    color: var(--gray-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-medium);
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--light-text);
    transition: all var(--transition-medium);
    border-radius: 3px;
}

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

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.gradient-text {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray-text);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.highlight {
    color: var(--primary-light);
    font-weight: 600;
}

.hero-description {
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
}

.tech-tag {
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    color: var(--primary-light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.hero-bio {
    font-size: 1.1rem;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-medium);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: var(--light-text);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-light);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(37, 99, 235, 0.2);
    transform: translateY(-2px);
}

.hero-social {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    color: var(--primary-light);
    font-size: 1.25rem;
    transition: all var(--transition-medium);
    text-decoration: none;
}

.social-link:hover {
    background: var(--gradient-secondary);
    color: var(--light-text);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-light);
    animation: bounce 2s infinite;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--gray-light);
    border-radius: 15px;
    position: relative;
}

.mouse::before {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--gray-light);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 0; top: 8px; }
    50% { opacity: 1; top: 15px; }
}

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

/* Fade-in animations */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-in-delay-1 {
    animation: fadeIn 1s ease-out 0.2s backwards;
}

.fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.4s backwards;
}

.fade-in-delay-3 {
    animation: fadeIn 1s ease-out 0.6s backwards;
}

.fade-in-delay-4 {
    animation: fadeIn 1s ease-out 0.8s backwards;
}

.fade-in-delay-5 {
    animation: fadeIn 1s ease-out 1s backwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   SECTION HEADERS
   =================================== */

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

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: var(--gradient-secondary);
    margin: 0 auto var(--spacing-md);
    border-radius: 2px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--gray-light);
    max-width: 600px;
    margin: 0 auto;
}

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

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

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

.about-intro {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.about-text p {
    color: var(--gray-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-text strong {
    color: var(--light-text);
    font-weight: 600;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--dark-tertiary);
    border-bottom: 1px solid var(--dark-tertiary);
}

.highlight-item {
    text-align: center;
}

.highlight-item i {
    font-size: 2.5rem;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.highlight-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.highlight-item p {
    color: var(--gray-light);
    margin: 0;
}

.contact-info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.info-card {
    background: var(--dark-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid rgba(148, 163, 184, 0.1);
    transition: all var(--transition-medium);
}

.info-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.info-card i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.info-card span {
    color: var(--gray-text);
    font-weight: 500;
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--dark-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.1);
    transition: all var(--transition-medium);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.category-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.category-icon i {
    font-size: 1.75rem;
    color: var(--light-text);
}

.skill-category h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-md);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    color: var(--primary-light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--primary-light);
    transform: scale(1.05);
}

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

.experience-section {
    background: var(--dark-secondary);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-secondary);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-xxl);
    margin-bottom: var(--spacing-xl);
}

.timeline-marker {
    position: absolute;
    left: -8px;
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border: 3px solid var(--dark-secondary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.experience-card {
    background: var(--dark-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid rgba(148, 163, 184, 0.1);
    transition: all var(--transition-medium);
}

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

.company-header {
    margin-bottom: var(--spacing-md);
}

.company-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.company-info h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: var(--spacing-xs);
}

.date-location {
    color: var(--gray-light);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.date-location i {
    color: var(--primary-light);
}

.separator {
    color: var(--gray-light);
}

.experience-description p {
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.responsibilities {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.responsibilities li {
    color: var(--gray-text);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    line-height: 1.8;
}

.responsibilities li i {
    position: absolute;
    left: 0;
    top: var(--spacing-xs);
    color: var(--primary-light);
    font-size: 0.875rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.tech-badge {
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: var(--secondary-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--dark-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid rgba(148, 163, 184, 0.1);
    transition: all var(--transition-medium);
}

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

.project-card.featured {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, var(--dark-secondary) 0%, rgba(37, 99, 235, 0.05) 100%);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.project-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: var(--radius-md);
}

.project-icon i {
    font-size: 1.75rem;
    color: var(--light-text);
}

.project-badge {
    background: var(--gradient-accent);
    color: var(--light-text);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.project-company {
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.project-description {
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.project-highlights {
    background: rgba(37, 99, 235, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 3px solid var(--primary-color);
}

.project-highlights h4 {
    color: var(--light-text);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.project-highlights ul {
    list-style: none;
}

.project-highlights li {
    color: var(--gray-text);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    line-height: 1.8;
}

.project-highlights li i {
    position: absolute;
    left: 0;
    top: var(--spacing-xs);
    color: #fbbf24;
    font-size: 0.875rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

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

.education-section {
    background: var(--dark-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

.column-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.column-title i {
    color: var(--primary-light);
}

.education-list,
.certifications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.education-item,
.certification-item {
    background: var(--dark-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.1);
    display: flex;
    gap: var(--spacing-md);
    transition: all var(--transition-medium);
}

.education-item:hover,
.certification-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.education-icon,
.cert-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.education-icon i,
.cert-icon i {
    font-size: 1.5rem;
    color: var(--light-text);
}

.education-content h4,
.cert-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.institution,
.issuer {
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.date,
.credential {
    color: var(--gray-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.field,
.grade {
    color: var(--gray-text);
    font-size: 0.95rem;
}

.cert-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.cert-badge i {
    font-size: 0.875rem;
}

/* Awards Section */
.awards-section {
    margin-bottom: var(--spacing-xxl);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.award-item {
    background: var(--dark-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.1);
    text-align: center;
    transition: all var(--transition-medium);
}

.award-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: #fbbf24;
}

.award-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
}

.award-icon i {
    font-size: 1.75rem;
    color: var(--dark-bg);
}

.award-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.award-item p {
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* Global Experience */
.global-experience {
    background: var(--dark-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.1);
}

.onshore-experience {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.onshore-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--dark-secondary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: var(--gray-text);
    font-weight: 500;
}

.onshore-item i {
    color: var(--primary-light);
    font-size: 1.25rem;
}

.onshore-item strong {
    color: var(--light-text);
}

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

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

.contact-card {
    background: var(--dark-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.1);
    text-align: center;
    transition: all var(--transition-medium);
}

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

.contact-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
}

.contact-icon i {
    font-size: 2rem;
    color: var(--light-text);
}

.contact-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.contact-card p {
    color: var(--gray-text);
    margin-bottom: var(--spacing-md);
}

.contact-link {
    display: inline-block;
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.contact-link:hover {
    color: var(--light-text);
}

.contact-cta {
    background: var(--dark-secondary);
    padding: var(--spacing-xxl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px solid var(--primary-color);
}

.contact-cta h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-md);
}

.contact-cta p {
    color: var(--gray-text);
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

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

.footer {
    background: var(--dark-secondary);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

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

.footer-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: var(--spacing-xs);
}

.footer-info p {
    color: var(--gray-text);
    margin-bottom: var(--spacing-xs);
}

.footer-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-location i {
    color: var(--primary-light);
}

.footer-links h4,
.footer-social h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--light-text);
    margin-bottom: var(--spacing-md);
}

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

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--gray-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    color: var(--primary-light);
    font-size: 1.25rem;
    transition: all var(--transition-medium);
    text-decoration: none;
}

.social-links a:hover {
    background: var(--gradient-secondary);
    color: var(--light-text);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(148, 163, 184, 0.1);
    color: var(--gray-light);
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

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

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    color: var(--light-text);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    z-index: var(--z-scroll-top);
    box-shadow: var(--shadow-lg);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

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

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

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--dark-bg);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        transition: left var(--transition-medium);
        border-top: 1px solid rgba(148, 163, 184, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* Hero */
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-bio {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Section titles */
    .section-title {
        font-size: 2rem;
    }
    
    /* Grids */
    .skills-grid,
    .projects-grid,
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card {
        min-width: unset;
    }
    
    /* Timeline */
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: var(--spacing-xl);
    }
    
    .timeline-marker {
        left: 2px;
    }
    
    /* Contact */
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}