/* Base Styles & Variables */

:root {
    --primary-color: #3b82f6; /* Slightly adjusted for a softer blue */
    --secondary-color: #2563eb; /* Darker blue for contrast */
    --accent-color: #2dd4bf;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --gradient: linear-gradient( 135deg, var(--primary-color), var(--secondary-color));
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 10px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Open Sans", sans-serif;
    line-height: 1.7;
    color: var(--dark-color);
    background-color: var(--light-color);
    transition: background-color 0.3s ease;
}

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

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

a:hover {
    color: var(--secondary-color);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: "Poppins", sans-serif;
    line-height: 1.3;
    font-weight: 600;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
    position: relative; /* Needed for SVG dividers */
    overflow: hidden; /* Ensure content doesn't overflow SVG */
}

/* Utility Classes */

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    font-family: "Poppins", sans-serif;
    transition: var(--transition);
    box-shadow: var(--shadow); /* Added shadow to buttons */
}

.btn-primary {
    background: var(--gradient);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02); /* Subtle scale on hover */
    box-shadow: 0 15px 20px -5px rgba(0, 0, 0, 0.2); /* More pronounced shadow */
    color: white;
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px) scale(1.02); /* Subtle scale on hover */
    box-shadow: 0 15px 20px -5px rgba(0, 0, 0, 0.2); /* More pronounced shadow */
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.btn-link:hover {
    color: var(--secondary-color);
    transform: translateX(3px);
}

.section-title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    color: var(--dark-color); /* Ensure title color adapts */
}

.section-title span {
    position: relative;
    z-index: 1;
}

.section-title span::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient);
    border-radius: 5px;
}

/* Header & Navbar */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08); /* Softer shadow */
    -webkit-backdrop-filter: blur(10px); /* Safari */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05); /* Subtle border */
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    padding: 0 30px;
    max-width: var(--max-width);
    margin: 0 auto;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.logo {
    font-family: "Poppins", sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text; /* future support */
    -webkit-text-fill-color: transparent;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    font-family: "Poppins", sans-serif;
    font-weight: 500;
    color: var(--dark-color);
    position: relative;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}

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

.theme-switch {
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--dark-color);
    transition: var(--transition);
}

.theme-switch:hover {
    color: var(--primary-color);
    transform: rotate(30deg);
}

/* Hero Section */

.hero {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top left, rgba(var(--primary-color-rgb), 0.05), transparent 50%),
                radial-gradient(circle at bottom right, rgba(var(--secondary-color-rgb), 0.05), transparent 50%);
    z-index: 1;
    pointer-events: none; /* Allows clicks to pass through */
}

.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-wrapper {
    position: relative;
    z-index: 2;
    padding: 100px 0;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 70px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.hero-image {
    flex: 1;
    position: relative;
    max-width: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-frame {
    position: relative;
    z-index: 2;
    width: 320px;
    height: 320px;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transform: rotate(-5deg);
    transition: transform 0.5s ease, box-shadow 0.3s ease;
    border: 3px solid transparent; /* Initial transparent border */
    animation: pulse-glow 2s infinite alternate; /* Subtle pulse animation */
}

.hero-image:hover .hero-image-frame {
    transform: rotate(0deg);
    box-shadow: 0 0 20px 5px rgba(var(--primary-color-rgb), 0.5), 0 0 40px 10px rgba(var(--secondary-color-rgb), 0.3); /* Glowing effect */
}

.hero-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-image-shape {
    position: absolute;
    z-index: 1;
    top: -20px;
    left: 20px;
    width: 320px;
    height: 320px;
    background: var(--gradient);
    border-radius: 30px;
    opacity: 0.5;
    transform: rotate(5deg);
    transition: transform 0.5s ease;
}

.hero-image:hover .hero-image-shape {
    transform: rotate(0deg);
}

@keyframes pulse-glow {
    0% {
        box-shadow: 0 0 8px 2px rgba(var(--primary-color-rgb), 0.3);
    }
    100% {
        box-shadow: 0 0 15px 5px rgba(var(--primary-color-rgb), 0.5);
    }
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-subtitle {
    font-family: "Poppins", sans-serif;
    color: var(--gray-color);
    font-size: 1.2rem;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.1;
    letter-spacing: -1px;

    /* Fallback color */
    color: var(--primary-color);

    /* Gradient text */
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text; /* future support */
    -webkit-text-fill-color: transparent;

    display: inline-block; /* ensures proper clipping */
}


.hero-role {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 25px;
    font-weight: 600;
    height: 2.5rem;
    display: flex;
    align-items: center;
}

.txt-rotate {
    display: inline-block;
    position: relative;
}

.txt-rotate::after {
    content: "|";
    animation: blink 0.7s infinite;
}

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

.hero-text p {
    margin-bottom: 30px;
    font-size: 1.1rem;
    color: var(--gray-color);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.hero-cta a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-social {
    display: flex;
    gap: 12px;
}

.hero-social .social-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: white;
    color: var(--primary-color);
    font-size: 1.2rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.hero-social .social-icon:hover {
    background: var(--gradient);
    color: white;
    transform: translateY(-5px) scale(1.1); /* Added scale */
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2); /* Stronger shadow on hover */
}

.hero-social .social-icon img.leetcode-icon { /* Specific style for LeetCode image */
    width: 30px; /* Adjust size as needed */
    height: 30px;
    object-fit: contain;
    filter: grayscale(100%); /* Make it grayscale initially */
    transition: filter 0.3s ease, transform 0.3s ease;
}

.hero-social .social-icon:hover img.leetcode-icon {
    filter: grayscale(0%); /* Color on hover */
    transform: scale(1.2); /* Pop effect */
}


.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 2;
}

.hero-scroll a {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    color: var(--gray-color);
    transition: var(--transition);
}

.hero-scroll a:hover {
    color: var(--primary-color);
    transform: translateY(-5px);
}

.mouse-icon {
    width: 30px;
    height: 50px;
    border: 2px solid currentColor;
    border-radius: 15px;
    position: relative;
    display: flex;
    justify-content: center;
    margin-bottom: 5px;
}

.mouse-wheel {
    position: absolute;
    top: 10px;
    width: 4px;
    height: 8px;
    background-color: currentColor;
    border-radius: 2px;
    animation: mouse-wheel 1.5s infinite;
}

@keyframes mouse-wheel {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(15px);
        opacity: 0;
    }
}

/* Dark Mode for Hero Section */

.dark-mode .hero {
    background: linear-gradient(135deg, #0f172a, #1e293b);
}

.dark-mode .hero-social .social-icon {
    background: #1e293b;
    color: #e2e8f0;
}

.dark-mode .hero-social .social-icon:hover {
    background: var(--gradient);
    color: white;
}

/* Responsive adjustments */

@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    .hero-image {
        margin: 0 auto;
    }
    .hero-image-frame,
    .hero-image-shape {
        width: 280px;
        height: 280px;
    }
    .hero-text {
        max-width: 100%;
    }
    .hero-title {
        font-size: 3.5rem;
    }
    .hero-role {
        font-size: 1.8rem;
        justify-content: center;
    }
    .hero-cta {
        justify-content: center;
    }
    .hero-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    .hero-role {
        font-size: 1.5rem;
    }
    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-cta a {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero-image-frame,
    .hero-image-shape {
        width: 240px;
        height: 240px;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-role {
        font-size: 1.3rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
}

/* SVG Dividers */
.svg-divider {
    position: absolute;
    width: 100%;
    left: 0;
    z-index: 10; /* Ensure it's above section content if needed */
}

.svg-divider.top-divider {
    top: 0;
    transform: translateY(-99%); /* Pull it up to sit on top of the section */
}

.svg-divider.bottom-divider {
    bottom: 0;
    transform: translateY(99%) rotateX(180deg); /* Flip it for bottom */
}

.svg-divider svg {
    display: block;
}

.svg-divider .shape-fill {
    fill: var(--light-color); /* Matches section background below/above */
    transition: fill 0.3s ease; /* For dark mode transition */
}

/* Skills Section */

.skills-section {
    background-color: #f9fafb;
    padding-top: 120px; /* Adjust padding to account for SVG divider */
    padding-bottom: 120px; /* Adjust padding to account for SVG divider */
}

.skills-category {
    margin-bottom: 40px;
}

.skills-category h3 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e5e7eb;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 20px;
}

.skill-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease; /* Added transform and box-shadow to transition */
}

.skill-card:hover {
    transform: translateY(-8px) scale(1.05); /* More pronounced lift and scale */
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15); /* Stronger shadow */
}

.skill-card img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 10px;
}

.skill-card span {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
}

/* Projects Section */

.projects-section {
    background-color: white;
    padding: 60px 0;
    padding-top: 80px; /* Adjusted to fit content better */
}

/* Container constraint */

.projects-section .container {
    max-width: 1140px;
    padding: 0 20px;
    margin: 0 auto;
}

/* Title styling */

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

/* Filter buttons styling */

.projects-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
    gap: 8px;
    margin-bottom: 35px;
}

.filter-btn {
    background: none;
    border: 1px solid #e5e7eb;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
}
.filter-btn:hover:not(.active) { /* Hover for non-active buttons */
    background: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
}


/* Project grid layout - reduced size */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

/* Project card styling */

.project-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid #e9ecef;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease; /* Added transform and box-shadow to transition */
}

.project-card:hover {
    transform: translateY(-8px) scale(1.02); /* Lift and slight scale */
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.18); /* More prominent shadow */
}

/* Featured project - constraint */

.project-card.featured-project {
    grid-column: span 1;
}

@media (min-width: 992px) {
    .project-card.featured-project {
        grid-column: span 2;
    }
}

/* Project slider - fixed height */

.project-slider {
    position: relative;
    height: 220px;
    overflow: hidden;
    background-color: #f8f9fa;
}

/* Create the browser-like top bar */

.project-slider::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 22px;
    background-color: #f1f3f5;
    border-bottom: 1px solid #dee2e6;
    z-index: 2;
    border-radius: 8px 8px 0 0;
}

/* Browser dots decoration */

.project-slider::after {
    content: "";
    position: absolute;
    top: 8px;
    left: 10px;
    width: 35px;
    height: 8px;
    background: linear-gradient( to right, #ff6b6b 0%, #ff6b6b 25%, #fcc419 35%, #fcc419 60%, #51cf66 70%, #51cf66 95%);
    border-radius: 10px;
    z-index: 3;
}

/* Slider inner container - adjust for browser bar */

.project-slider-inner {
    display: flex;
    height: calc(100% - 22px);
    width: 100%;
    margin-top: 22px;
    transition: transform 0.5s ease;
}

/* Fix the image scaling */

.project-slider-inner img {
    min-width: 100%;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    background-color: #f8f9fa;
}

/* Slider controls */

.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-slider:hover .slider-controls {
    opacity: 1;
}

.slider-prev,
.slider-next {
    background: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: #1e293b;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.slider-prev:hover,
.slider-next:hover {
    background: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    transform: scale(1.1);
}

/* Slider dots */

.slider-dots {
    position: absolute;
    bottom: 15px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 6px;
    z-index: 10;
}

.slider-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.3);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* Project content */

.project-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    font-weight: 600;
    position: relative; /* Ensure position for ::after */
    padding-bottom: 8px; /* Added for section-title like underline */
}

.project-content h3::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); /* Use variables for gradient */
    border-radius: 3px;
}

/* Project tags */

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.project-tags span {
    background: #f1f5f9;
    color: #64748b;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

.project-content p {
    margin-bottom: 15px;
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.6;
    flex-grow: 1;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: auto;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.btn-link:hover {
    color: var(--secondary-color);
    transform: translateX(3px);
}

.view-more-container {
    margin-top: 35px;
    text-align: center;
}

/* Project Gallery Modal */

.project-gallery-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1100;
    overflow: hidden;
    justify-content: center;
    align-items: center;
}

.gallery-modal-content {
    position: relative;
    width: 85%;
    max-width: 800px;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    animation: modalFadeIn 0.3s ease;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

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

.gallery-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    color: var(--dark-color);
    cursor: pointer;
    z-index: 2;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(17, 17, 17, 0.9);
    transition: var(--transition);
}

.gallery-close:hover {
    background: rgb(131, 129, 129);
    transform: rotate(90deg);
}

.gallery-title {
    padding: 15px 20px;
    margin: 0;
    background: #767575;
    border-bottom: 1px solid #62a0f1;
    font-size: 1.2rem;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.gallery-container {
    position: relative;
    height: 400px;
    overflow: hidden;
    background: #0f172a;
}

.gallery-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.gallery-slide.active {
    opacity: 1;
}

.gallery-slide img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.gallery-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 25px;
    background: #6f7071;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.gallery-prev,
.gallery-next {
    background: rgb(113, 112, 112);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--dark-color);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.gallery-prev:hover,
.gallery-next:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.gallery-dots {
    display: flex;
    gap: 8px;
}

.gallery-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #e2e8f0;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.gallery-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* Timeline Section */

.timeline-section {
    background-color: #f9fafb;
    padding-top: 120px; /* Adjust padding for SVG divider */
    padding-bottom: 120px; /* Adjust padding for SVG divider */
}

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

.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e5e7eb;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    padding: 30px 0;
    position: relative;
    width: 100%;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    left: 50%;
    top: 30px;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(var(--primary-color-rgb), 0.2); /* Subtle pulse effect */
    animation: dot-pulse 1.5s infinite alternate;
}

@keyframes dot-pulse {
    0% {
        box-shadow: 0 0 0 4px rgba(var(--primary-color-rgb), 0.2);
    }
    100% {
        box-shadow: 0 0 0 8px rgba(var(--primary-color-rgb), 0.0);
    }
}

.timeline-content {
    position: relative;
    width: 45%;
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease; /* Added transform and box-shadow to transition */
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-item:nth-child(even) .timeline-content::before {
    content: "";
    position: absolute;
    top: 20px;
    right: -10px;
    border-width: 10px 0 10px 10px;
    border-style: solid;
    border-color: transparent transparent transparent white;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    content: "";
    position: absolute;
    top: 20px;
    left: -10px;
    border-width: 10px 10px 10px 0;
    border-style: solid;
    border-color: transparent white transparent transparent;
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.timeline-content h4 {
    font-size: 1rem;
    color: var(--gray-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.timeline-date {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

/* Contact Section */

.contact-section {
    background-color: white;
    padding-top: 80px; /* Adjusted padding */
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    padding: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 30px;
}

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

.contact-item h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-item p,
.contact-item a {
    color: var(--gray-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f1f5f9;
    color: var(--dark-color);
    font-size: 1.2rem;
    transition: var(--transition);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease; /* Added transform and box-shadow to transition */
}

.social-icon:hover {
    background: var(--gradient);
    color: white;
    transform: translateY(-5px) scale(1.1); /* Lift and scale */
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2); /* Stronger shadow */
}

.social-icon img.leetcode-icon { /* Specific style for LeetCode image */
    width: 26px; /* Adjust size as needed */
    height: 26px;
    object-fit: contain;
    filter: grayscale(100%); /* Make it grayscale initially */
    transition: filter 0.3s ease, transform 0.3s ease;
}

.social-icon:hover img.leetcode-icon {
    filter: grayscale(0%); /* Color on hover */
    transform: scale(1.2); /* Pop effect */
}


.contact-form {
    background: #f9fafb;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e5e7eb;
    border-radius: 5px;
    font-family: "Open Sans", sans-serif;
    font-size: 1rem;
    transition: var(--transition);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1); /* Use RGB for consistency */
}

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

/* Footer */

footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 30px 0;
}

/* Back to Top Button */
#backToTopBtn {
    display: none; /* Hidden by default */
    position: fixed; /* Fixed position */
    bottom: 30px; /* Place at the bottom */
    right: 30px; /* Place at the right */
    z-index: 99; /* High z-index to be on top */
    border: none; /* Remove borders */
    outline: none; /* Remove outline */
    background-color: var(--primary-color); /* Set a background color */
    color: white; /* Text color */
    cursor: pointer; /* Add a mouse pointer on hover */
    padding: 15px; /* Some padding */
    border-radius: 50%; /* Rounded corners */
    font-size: 18px; /* Increase font size */
    box-shadow: var(--shadow); /* Add shadow */
    transition: background-color 0.3s, transform 0.3s, opacity 0.3s; /* Smooth transition */
    opacity: 0.8;
}

#backToTopBtn:hover {
    background-color: var(--secondary-color); /* Darker background on hover */
    transform: translateY(-5px) scale(1.1);
    opacity: 1;
}

/* Responsive Styles */

@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    .hero-text h1 {
        font-size: 3rem;
    }
    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-cta {
        justify-content: center;
    }
    .contact-container {
        grid-template-columns: 1fr;
    }
    .timeline::before {
        left: 30px;
    }
    .timeline-dot {
        left: 30px;
    }
    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -10px;
        border-width: 10px 10px 10px 0;
        border-color: transparent white transparent transparent;
    }
    .svg-divider.top-divider, .svg-divider.bottom-divider {
        transform: translateY(-99%); /* Adjust for single column */
    }
    .svg-divider.bottom-divider {
        transform: translateY(99%) rotateX(180deg);
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0 20px;
    }
    nav ul {
        gap: 15px;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .projects-grid {
        grid-template-columns: 1fr; /* Single column for projects */
    }
    .hero-text h1 {
        font-size: 2.5rem;
    }
    .hero-text h2 {
        font-size: 1.5rem;
    }
    .project-slider { /* Added for responsiveness */
        height: 200px;
    }
    .gallery-container { /* Added for responsiveness */
        height: 320px;
    }
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); /* Smaller skill cards */
    }
    .skill-card img {
        width: 50px;
        height: 50px;
    }
    .skill-card span {
        font-size: 0.85rem;
    }
    .timeline-content {
        width: calc(100% - 50px); /* Adjust for smaller screen */
        margin-left: 50px !important;
        padding: 15px;
    }
    .timeline::before, .timeline-dot {
        left: 20px; /* Adjust timeline line position */
    }
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -10px;
        border-width: 8px 8px 8px 0; /* Smaller arrow */
    }
}

@media (max-width: 576px) {
    nav ul {
        display: none;
    }
    .navbar {
        justify-content: space-between;
    }
    .hero-text h1 {
        font-size: 2rem;
    }
    .hero-text h2 {
        font-size: 1.2rem;
    }
    .hero-cta {
        flex-direction: column;
        gap: 10px;
    }
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .filter-btn {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    .project-slider { /* Added for responsiveness */
        height: 180px;
    }
    .project-content { /* Added for responsiveness */
        padding: 15px;
    }
    .project-content h3 { /* Added for responsiveness */
        font-size: 1.1rem;
    }
    .projects-grid { /* Added for responsiveness */
        grid-template-columns: 1fr;
        max-width: 320px;
        margin: 0 auto;
    }
    .gallery-container { /* Added for responsiveness */
        height: 260px;
    }
    .contact-info {
        padding: 0;
    }
    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .contact-item i {
        margin-bottom: 10px;
    }
    .social-links {
        justify-content: center;
    }
    #backToTopBtn {
        bottom: 20px;
        right: 20px;
        padding: 12px;
        font-size: 16px;
    }
}

/* Dark Mode Styles */

.dark-mode {
    --primary-color: #60a5fa; /* Lighter blue for dark mode */
    --secondary-color: #3b82f6; /* Darker blue for dark mode */
    --accent-color: #22d3ee;
    --dark-color: #f8fafc; /* Light text */
    --light-color: #0f172a; /* Dark background */
    --gray-color: #94a3b8; /* Lighter gray for dark mode */
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.3); /* Stronger shadow */
}

.dark-mode header {
    background-color: rgba(15, 23, 42, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

.dark-mode .nav-link {
    color: var(--dark-color);
}

.dark-mode .skill-card,
.dark-mode .project-card,
.dark-mode .timeline-content,
.dark-mode .contact-form,
.dark-mode .gallery-modal-content {
    background-color: #1e293b;
    color: var(--dark-color);
    border-color: #334155; /* Darker border */
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3); /* Darker shadow */
}

.dark-mode .timeline-content::before {
    border-color: transparent #1e293b transparent transparent;
}

.dark-mode .timeline-item:nth-child(odd) .timeline-content::before {
    border-color: transparent transparent transparent #1e293b;
}

.dark-mode .skills-section,
.dark-mode .timeline-section {
    background-color: #0f172a;
}

.dark-mode .projects-section,
.dark-mode .contact-section {
    background-color: #111827;
}

.dark-mode .skills-category h3 {
    color: var(--dark-color);
    border-bottom-color: #334155;
}

.dark-mode .project-tags span {
    background-color: #334155;
    color: #cbd5e1;
}

.dark-mode .form-group input,
.dark-mode .form-group textarea {
    background-color: #1e293b;
    border-color: #334155;
    color: #e2e8f0;
}

.dark-mode .form-group input:focus,
.dark-mode .form-group textarea:focus {
    border-color: var(--primary-color);
}

.dark-mode .social-icon {
    background-color: #334155;
    color: #e2e8f0;
}

.dark-mode .filter-btn {
    background: #1e293b;
    border-color: #334155;
    color: #e2e8f0;
}

.dark-mode .filter-btn:hover,
.dark-mode .filter-btn.active {
    background: var(--gradient);
    color: white;
}
.dark-mode .filter-btn:hover:not(.active) { /* Hover for non-active buttons in dark mode */
    background: rgba(var(--primary-color-rgb), 0.15);
    color: var(--primary-color);
}

.dark-mode footer {
    background-color: #0f172a;
}

/* Dark mode for SVG Dividers */
.dark-mode .svg-divider .shape-fill {
    fill: var(--light-color); /* Match dark mode background */
}

/* Dark mode for Back to Top Button */
.dark-mode #backToTopBtn {
    background-color: var(--secondary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

.dark-mode #backToTopBtn:hover {
    background-color: var(--primary-color);
}

/* Animation classes for scroll effects */

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

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

/* Add transition for dark mode switching */

.navbar,
.skill-card,
.project-card,
.timeline-content,
.contact-form,
.form-group input,
.form-group textarea,
.filter-btn,
.social-icon,
.gallery-modal-content,
.gallery-title,
.gallery-navigation,
.gallery-prev,
.gallery-next,
.gallery-dot {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

/* Define RGB values for gradients in JS */
:root {
    --primary-color-rgb: 59, 130, 246; /* RGB for #3b82f6 */
    --secondary-color-rgb: 37, 99, 235; /* RGB for #2563eb */
}

.dark-mode {
    --primary-color-rgb: 96, 165, 250; /* RGB for #60a5fa */
    --secondary-color-rgb: 59, 130, 246; /* RGB for #3b82f6 */
}