/* CSS Variables & Theme Setup */
:root {
    /* Dark Theme (Default) */
    --primary-color: #38bdf8;
    --secondary-color: #818cf8;
    --accent-color: #22d3ee;

    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --bg-nav: rgba(15, 23, 42, 0.95);

    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-light: #cbd5e1;

    --border-color: #334155;
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);

    /* Spacing */
    --section-padding: 6rem 0;

    /* Transitions */
    --transition-speed: 0.3s;
}

[data-theme="light"] {
    --primary-color: #0284c7;
    --secondary-color: #4f46e5;
    --accent-color: #0891b2;

    --bg-body: #ffffff;
    --bg-card: #f8fafc;
    --bg-nav: rgba(255, 255, 255, 0.95);

    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #334155;

    --border-color: #e2e8f0;
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.08);
}

/* Base Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.7;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Poppins', sans-serif;
    color: var(--text-main);
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

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

ul {
    list-style: none;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    font-size: 1rem;
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    margin-left: 1rem;
}

.btn-secondary:hover {
    background: rgba(56, 189, 248, 0.1);
    transform: translateY(-2px);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    background-color: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-links li a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
}

.nav-links li a:hover {
    color: var(--primary-color);
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: transform var(--transition-speed);
}

#theme-toggle:hover {
    transform: rotate(20deg);
    color: var(--primary-color);
}

.hamburger {
    display: none;
    cursor: pointer;
    z-index: 1001;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--text-main);
    transition: all 0.3s ease-in-out;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 2rem;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 4rem;
}

.greeting {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    display: block;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-weight: 500;
}

.hero-text {
    font-size: 1.1rem;
    max-width: 90%;
    margin-bottom: 2.5rem;
    color: var(--text-muted);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    width: 380px;
    height: 380px;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 60px rgba(56, 189, 248, 0.2);
    position: relative;
    animation: morph 8s ease-in-out infinite;
    overflow: hidden;
    background-color: var(--bg-card);
    transition: all var(--transition-speed);
}

.hero-profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: transform 0.5s ease;
}

.hero-image-wrapper:hover .hero-profile-img {
    transform: scale(1.05);
}

@keyframes morph {
    0% {
        border-radius: 60% 40% 30% 70%/60% 30% 70% 40%;
    }

    50% {
        border-radius: 30% 60% 70% 40%/50% 60% 30% 60%;
    }

    100% {
        border-radius: 60% 40% 30% 70%/60% 30% 70% 40%;
    }
}

/* Sections General */
section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 4px;
}

/* About Section */
.about-content {
    background-color: var(--bg-card);
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
}

.personal-info {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 3rem;
}

.personal-info p {
    margin-bottom: 0;
}

.personal-info strong {
    color: var(--text-light);
}

.personal-info a {
    color: var(--primary-color);
}

.subsection-title {
    margin-top: 2.5rem;
    font-size: 1.5rem;
    color: var(--text-main);
}

.interests-grid {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.interest-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background-color: var(--bg-body);
    padding: 0.8rem 1.5rem;
    border-radius: 2rem;
    font-size: 1rem;
    color: var(--text-light);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed);
}

.interest-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.interest-item i {
    color: var(--primary-color);
}

/* Objective Section */
.objective-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.2rem;
    line-height: 1.8;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2rem;
}

.skill-category {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed);
}

.skill-category:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.skill-tag {
    background-color: rgba(56, 189, 248, 0.15);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
}

/* Projects */
.featured-project {
    border: 2px solid var(--primary-color) !important;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.15) !important;
    position: relative;
}

[data-theme="light"] .featured-project {
    box-shadow: 0 0 15px rgba(2, 132, 199, 0.1) !important;
}

.featured-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    width: fit-content;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.featured-badge i {
    margin-right: 5px;
    color: #fff;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: 2.5rem;
}

.project-card {
    background-color: var(--bg-card);
    border-radius: 1.2rem;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
}

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

.project-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.project-content .subtitle {
    font-size: 0.95rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.project-content ul {
    margin: 1rem 0;
    padding-left: 1.2rem;
    list-style: disc;
    color: var(--text-muted);
}

.project-tags {
    margin-top: auto;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding-top: 1.5rem;
}

.project-tags span {
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-light);
}

/* Education */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--border-color);
    top: 0;
    bottom: 0;
    left: 20px;
    margin-left: -1px;
}

.timeline-item {
    padding: 0 0 2rem 3.5rem;
    position: relative;
}

.timeline-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    left: 10px;
    top: 0;
    background-color: var(--primary-color);
    border: 4px solid var(--bg-body);
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 0 2px var(--border-color);
}

.timeline-content {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
}

.timeline-date {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.coursework {
    margin-top: 1.5rem;
    background-color: var(--bg-body);
    padding: 1.5rem;
    border-radius: 0.8rem;
}

.coursework ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 0.8rem;
}

.coursework li {
    font-size: 0.9rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.coursework li::before {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

/* Certifications */
.certifications-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 1.5rem;
}

.cert-item {
    background-color: var(--bg-card);
    padding: 1.5rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed);
}

.cert-item:hover {
    transform: translateX(8px);
    border-color: var(--primary-color);
}

.cert-item i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.cert-item.with-image {
    flex-direction: column;
    padding: 0;
    align-items: stretch;
    overflow: hidden;
}

.cert-item.with-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
    transition: transform 0.5s ease;
}

.cert-item.with-image:hover img {
    transform: scale(1.05);
}

.cert-item.with-image .cert-details {
    padding: 1.5rem;
    position: relative;
    background-color: var(--bg-card);
    z-index: 1;
}

.volunteer i {
    color: var(--accent-color);
}

.cert-details h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    color: var(--text-main);
}

.cert-details p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Contact */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

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

.info-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    font-size: 1.1rem;
    color: var(--text-light);
}

.info-item i {
    color: var(--primary-color);
    font-size: 1.4rem;
}

.social-links {
    display: flex;
    gap: 1.2rem;
    margin-top: 1rem;
}

.social-links a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--bg-card);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed);
    color: var(--text-main);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(56, 189, 248, 0.3);
}

.contact-form {
    background-color: var(--bg-card);
    padding: 2.5rem;
    border-radius: 1.5rem;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.8rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 0.8rem;
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: all var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.form-status {
    margin: 1rem 0 0;
    font-size: 0.95rem;
    font-weight: 500;
}

.form-status.success {
    color: var(--accent-color);
}

.form-status.error {
    color: #f87171;
}

/* Footer */
footer {
    padding: 3rem 0;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    margin-top: 6rem;
}

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

.back-to-top {
    width: 45px;
    height: 45px;
    background-color: var(--bg-body);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: all var(--transition-speed);
    border: 1px solid var(--border-color);
}

.back-to-top:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* Responsive */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 2;
        margin-top: 1rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .personal-info {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        right: -100%;
        top: 75px;
        flex-direction: column;
        background-color: var(--bg-nav);
        width: 100%;
        height: calc(100vh - 75px);
        padding: 3rem 0;
        border-bottom: 1px solid var(--border-color);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        backdrop-filter: blur(12px);
    }

    .nav-links.active {
        right: 0;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 4rem 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .btn {
        width: 100%;
        margin-left: 0;
        margin-bottom: 1rem;
    }

    .hero-image-wrapper {
        width: min(100%, 280px);
        height: auto;
        aspect-ratio: 1;
    }

    .container {
        padding: 0 1.5rem;
    }
}

/* Lightbox Modal */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.show {
    opacity: 1;
}

.lightbox-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 900px;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    animation: zoomIn 0.3s;
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
    font-size: 1.1rem;
    font-weight: 500;
}

.close-lightbox {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close-lightbox:hover,
.close-lightbox:focus {
    color: var(--primary-color);
    text-decoration: none;
    cursor: pointer;
}

/* Clickable Images */
.clickable-image,
.cert-item.with-image img {
    cursor: pointer;
}

/* Project Image Styles */
.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

@media only screen and (max-width: 700px) {
    .lightbox-content {
        width: 95%;
    }
}