/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* CSS Variables for Theme */
:root {
    --primary-color: #1a365d;        /* Deep Navy Blue */
    --accent-color: #3182ce;         /* Vibrant Blue */
    --accent-light: #ebf8ff;         /* Very Light Blue tint */
    --text-dark: #2d3748;            /* Charcoal for main text */
    --text-light: #718096;           /* Muted grey for subtext */
    --bg-light: #f7fafc;             /* Off-white background */
    --bg-white: #ffffff;             /* Pure white background */
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 20px 40px -15px rgba(49, 130, 206, 0.2);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-primary: 'Outfit', sans-serif;
    --border-radius: 16px;
    --max-width: 1200px;
}

/* Global Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

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

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

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

li {
    list-style: none;
}

input, textarea {
    font-family: var(--font-primary);
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-light);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Typography Helpers */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 3.5rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 0.8rem auto 0;
    border-radius: 2px;
}

/* Header & Glassmorphic Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(49, 130, 206, 0.1);
    z-index: 1000;
    transition: var(--transition-smooth);
}

header.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo span {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    gap: 1.8rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 1rem;
    position: relative;
    padding: 0.3rem 0;
}

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

.nav-link:hover {
    color: var(--accent-color);
}

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

.nav-link.active {
    color: var(--accent-color);
}

/* Mobile Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: var(--transition-smooth);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--bg-white);
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

/* Hero background glow */
.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    top: -200px;
    right: -100px;
    background: radial-gradient(circle, rgba(49, 130, 206, 0.08) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 1;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1.1;
}

.hero-typing {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-dark);
    min-height: 40px;
}

.typed-cursor {
    font-weight: 400;
    color: var(--accent-color);
    animation: blink 0.7s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 580px;
}

.hero-cta {
    display: flex;
    gap: 1.2rem;
    margin-top: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.9rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-white);
    box-shadow: 0 4px 14px rgba(49, 130, 206, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(26, 54, 93, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bg-white);
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

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

/* Styled Profile Frame */
.hero-image-wrapper {
    display: flex;
    justify-content: center;
    position: relative;
}

.profile-frame {
    position: relative;
    width: 320px;
    height: 320px;
    border-radius: var(--border-radius);
    padding: 10px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
}

.profile-frame:hover {
    transform: translateY(-5px) rotate(1deg);
    box-shadow: var(--hover-shadow);
}

.profile-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: calc(var(--border-radius) - 6px);
    background-color: var(--bg-light);
}

/* About Section */
.about {
    padding: 8rem 2rem;
    background-color: var(--bg-light);
}

.about-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-text {
    font-size: 1.1rem;
    color: var(--text-dark);
    line-height: 1.8;
}

.about-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.info-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
    font-weight: 600;
}

.info-val {
    font-size: 1.05rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* Skills Section */
.skills {
    padding: 8rem 2rem;
    background-color: var(--bg-white);
}

.skills-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.2rem;
}

.skill-card {
    background-color: var(--bg-light);
    border: 1px solid rgba(49, 130, 206, 0.1);
    border-radius: var(--border-radius);
    padding: 2.2rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
    border-color: rgba(49, 130, 206, 0.3);
    background-color: var(--bg-white);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.skill-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: var(--accent-light);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition-smooth);
}

.skill-card:hover .skill-icon-wrapper {
    background-color: var(--accent-color);
    color: var(--bg-white);
}

.skill-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    background-color: var(--bg-white);
    border: 1px solid rgba(0, 0, 0, 0.05);
    color: var(--text-dark);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.skill-card:hover .skill-tag {
    background-color: var(--bg-light);
}

.skill-tag:hover {
    background-color: var(--accent-light) !important;
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Education & Experience Timeline styling */
.education-experience {
    padding: 8rem 2rem;
    background-color: var(--bg-light);
}

.timeline-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.timeline-section {
    display: flex;
    flex-direction: column;
}

.timeline-section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.timeline-section-title i {
    color: var(--accent-color);
}

.timeline {
    position: relative;
    border-left: 2px solid rgba(49, 130, 206, 0.2);
    padding-left: 2.2rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.timeline-item {
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: calc(-2.2rem - 6px);
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent-color);
    border: 2px solid var(--bg-light);
    box-shadow: 0 0 0 4px rgba(49, 130, 206, 0.2);
    transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-dot {
    background-color: var(--primary-color);
    transform: scale(1.3);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.8rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-date {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-color);
    background-color: var(--accent-light);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.timeline-subtitle {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-dark);
}

.timeline-details {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.timeline-list {
    margin-top: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.timeline-list-item {
    position: relative;
    padding-left: 1.2rem;
    font-size: 0.95rem;
    color: var(--text-dark);
}

.timeline-list-item::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Projects Section */
.projects {
    padding: 8rem 2rem;
    background-color: var(--bg-white);
}

.projects-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background-color: var(--bg-light);
    border: 1px solid rgba(49, 130, 206, 0.08);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--hover-shadow);
    border-color: rgba(49, 130, 206, 0.25);
    background-color: var(--bg-white);
}

.project-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background-color: var(--accent-light);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.8rem;
    transition: var(--transition-smooth);
}

.project-card:hover .project-icon-wrapper {
    background-color: var(--accent-color);
    color: var(--bg-white);
    transform: scale(1.05);
}

.project-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.project-desc {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 1.8rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
}

.project-tag {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-color);
    background-color: var(--accent-light);
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
}

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

.project-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.project-link:hover {
    color: var(--accent-color);
}

/* Certifications Section */
.certifications {
    padding: 8rem 2rem;
    background-color: var(--bg-light);
}

.certifications-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.2rem;
    justify-content: center;
}

.cert-card {
    background-color: var(--bg-white);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: var(--transition-smooth);
}

.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--hover-shadow);
    border-color: rgba(49, 130, 206, 0.2);
}

.cert-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
}

.cert-details {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.cert-issuer {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cert-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-color);
}

.cert-date {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Contact Section */
.contact {
    padding: 8rem 2rem;
    background-color: var(--bg-white);
}

.contact-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-info-desc {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.7;
}

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

.contact-method {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--accent-light);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-smooth);
}

.contact-method:hover .contact-icon {
    background-color: var(--accent-color);
    color: var(--bg-white);
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 600;
}

.contact-link {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-color);
}

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

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

.social-icon {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: 2px solid rgba(49, 130, 206, 0.2);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-smooth);
}

.social-icon:hover {
    background-color: var(--accent-color);
    color: var(--bg-white);
    border-color: var(--accent-color);
    transform: translateY(-3px);
}

/* Contact Form styling */
.contact-form {
    background-color: var(--bg-light);
    padding: 3rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(49, 130, 206, 0.05);
    box-shadow: var(--card-shadow);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
}

.form-control {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background-color: var(--bg-white);
    font-size: 0.95rem;
    color: var(--text-dark);
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.15);
}

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

.form-submit-btn {
    width: 100%;
    justify-content: center;
    border: none;
}

/* Footer styling */
footer {
    background-color: var(--primary-color);
    color: rgba(255, 255, 255, 0.7);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.footer-logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--bg-white);
}

.footer-logo span {
    color: var(--accent-color);
}

.footer-text {
    font-size: 0.95rem;
}

/* Scroll to Top button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: var(--bg-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

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

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

/* Scroll Reveal Fade-in Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-description {
        margin: 0 auto;
    }

    .about-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .timeline-container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2.1rem;
        margin-bottom: 2.5rem;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-white);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
        flex-direction: column;
        padding: 6rem 2.5rem;
        gap: 2rem;
        transition: var(--transition-smooth);
        z-index: 999;
    }

    .nav-menu.open {
        right: 0;
    }

    .hamburger {
        display: block;
        z-index: 1000;
    }

    .hamburger.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

    .hamburger.open span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    .hero-title {
        font-size: 2.6rem;
    }

    .hero-typing {
        font-size: 1.4rem;
    }

    .profile-frame {
        width: 280px;
        height: 280px;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-group.full-width {
        grid-column: span 1;
    }
}