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

:root {
    /* Navy blue professional theme colors */
    --primary: hsl(210, 100%, 20%);
    --primary-light: hsl(210, 100%, 30%);
    --primary-dark: hsl(210, 100%, 15%);
    --secondary: hsl(210, 40%, 98%);
    --accent: hsl(210, 50%, 95%);
    --text-primary: hsl(210, 40%, 8%);
    --text-secondary: hsl(215, 16%, 47%);
    --text-light: hsl(210, 20%, 98%);
    --background: hsl(0, 0%, 100%);
    --card-bg: hsl(0, 0%, 100%);
    --border: hsl(214, 32%, 91%);
    --shadow: rgba(0, 0, 0, 0.1);
    --gradient-1: hsl(210, 100%, 20%);
    --gradient-2: hsl(220, 100%, 25%);
    --gradient-3: hsl(200, 100%, 25%);
}

body {
    font-family: 'Inter', 'Poppins', system-ui, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    font-feature-settings: "rlig" 1, "calt" 1;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

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

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

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

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

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

/* Section Styles */
.section {
    padding: 5rem 0;
}

.section:nth-child(even) {
    background-color: var(--secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-family: 'Poppins', sans-serif;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
    transform: translateY(-100%);
    animation: slideDown 0.5s ease-out 0.2s forwards;
}

@keyframes slideDown {
    to {
        transform: translateY(0);
    }
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-logo .logo-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    transition: transform 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.nav-logo .logo-btn:hover {
    transform: scale(1.05);
}

.hero-title {
    background: linear-gradient(135deg, var(--gradient-1) 0%, var(--gradient-2) 50%, var(--gradient-3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    background: none;
    border: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    text-decoration: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--primary);
    background-color: rgba(33, 82, 135, 0.1);
}

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

.nav-link.active {
    color: var(--primary);
    background-color: rgba(33, 82, 135, 0.1);
}

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

.nav-toggle {
    display: none;
}

.mobile-menu-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    color: var(--primary);
    background-color: rgba(33, 82, 135, 0.1);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: var(--text-light);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
}

.gradient-animation {
    background: linear-gradient(-45deg, var(--gradient-1), var(--primary-light), var(--gradient-2), var(--gradient-3));
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    pointer-events: none;
}

.particles-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    pointer-events: none;
}

.shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.shape-1 {
    top: 20%;
    left: 10%;
    width: 5rem;
    height: 5rem;
    animation: float 6s ease-in-out infinite;
}

.shape-2 {
    top: 40%;
    right: 20%;
    width: 4rem;
    height: 4rem;
    border-radius: 25%;
    animation: float 8s ease-in-out infinite reverse;
}

.shape-3 {
    bottom: 40%;
    left: 20%;
    width: 3rem;
    height: 3rem;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.hero-intro {
    margin-bottom: 2rem;
}

.hero-name {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    font-family: 'Poppins', sans-serif;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title-text {
    font-size: 1.5rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-tagline {
    font-size: 1.25rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-contact {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.contact-info:hover {
    color: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.btn-primary, .btn-secondary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn-primary {
    background: var(--text-light);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

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

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

.btn-primary::before, .btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before, .btn-secondary:hover::before {
    left: 100%;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: fadeIn 1s ease-out 1.5s both;
}

.scroll-mouse {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    animation: float 2s ease-in-out infinite;
}

.scroll-wheel {
    width: 2px;
    height: 8px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 1px;
    margin-top: 8px;
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
    0%, 20% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4rem;
}

.hero-wave svg {
    width: 100%;
    height: 100%;
}

/* Animation Keyframes */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-text:last-child {
    margin-bottom: 0;
}

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

.timeline-line {
    position: absolute;
    left: 2rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--primary-light));
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 6rem;
}

.timeline-dot {
    position: absolute;
    left: 1.25rem;
    top: 1.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--background);
    box-shadow: 0 0 0 4px var(--primary);
    z-index: 2;
}

.timeline-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.timeline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow);
}

.timeline-card {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.timeline-icon {
    padding: 0.75rem;
    background: rgba(33, 82, 135, 0.1);
    border-radius: 0.5rem;
    color: var(--primary);
    flex-shrink: 0;
}

.timeline-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-institution {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.timeline-year {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

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

/* Experience Section */
.experience-section {
    background-color: var(--secondary);
}

.experience-grid {
    display: grid;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.experience-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow);
}

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

.exp-icon {
    padding: 0.75rem;
    background: rgba(33, 82, 135, 0.1);
    border-radius: 0.5rem;
    color: var(--primary);
    flex-shrink: 0;
}

.exp-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.exp-company {
    color: var(--primary);
    font-weight: 500;
}

.exp-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.exp-period, .exp-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.exp-responsibilities {
    list-style: none;
}

.exp-responsibilities li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.exp-responsibilities li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    margin-top: 0.5rem;
    flex-shrink: 0;
}

/* Certifications Section */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.cert-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 30px var(--shadow);
}

.cert-icon {
    width: 3rem;
    height: 3rem;
    background: rgba(33, 82, 135, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--primary);
    transition: all 0.3s ease;
}

.cert-card:hover .cert-icon {
    background: rgba(33, 82, 135, 0.2);
}

.cert-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.cert-card:hover h3 {
    color: var(--primary);
}

.cert-provider {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.cert-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(33, 82, 135, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    border-radius: 1rem;
}

/* Skills Section */
.skills-section {
    background-color: var(--secondary);
}

.skills-categories {
    display: grid;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.skill-icon {
    padding: 0.75rem;
    background: rgba(33, 82, 135, 0.1);
    border-radius: 0.5rem;
    color: var(--primary);
}

.skill-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-bars {
    display: grid;
    gap: 1.5rem;
}

.skill-bar {
    display: grid;
    gap: 0.5rem;
}

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

.skill-info span:first-child {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.skill-info span:last-child {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.skill-progress {
    height: 8px;
    background: var(--accent);
    border-radius: 4px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 4px;
    width: 0;
    transition: width 1s ease-in-out;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3, .contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.contact-details {
    display: grid;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    transition: box-shadow 0.3s ease;
}

.contact-item:hover {
    box-shadow: 0 4px 15px var(--shadow);
}

.contact-icon {
    padding: 0.75rem;
    background: rgba(33, 82, 135, 0.1);
    border-radius: 0.5rem;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-text h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.form-container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--background);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(33, 82, 135, 0.1);
}

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

/* Footer */
.footer {
    background: var(--primary);
    color: var(--text-light);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.heart-icon {
    color: #ef4444;
    fill: currentColor;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .timeline-line {
        left: 1.5rem;
    }
    
    .timeline-item {
        padding-left: 4rem;
    }
    
    .timeline-dot {
        left: 1rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 4rem;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        border-top: 1px solid var(--border);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-title-text {
        font-size: 1.25rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
    
    .hero-contact {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .timeline {
        padding-left: 1rem;
    }
    
    .timeline-line {
        left: 1rem;
    }
    
    .timeline-item {
        padding-left: 3rem;
    }
    
    .timeline-dot {
        left: 0.625rem;
    }
    
    .timeline-card {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .certifications-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}