/* Importing Google Font "Inter" */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Defining color themes using CSS variables */
:root {
    /* Light Mode Colors */
    --background-color: #e6e6e6;
    --background-darker: #f7f7f7;
    --text-color: #2c3e50;
    --text-light: #ecf0f1;
    --accent-color: #3498db;
    --secondary-accent: #e74c3c;
    --button-bg: #3498db;
    --button-text: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    /* Dark Mode Colors */
    --background-color: #1a1a2e;
    --background-darker: #2c2c40;
    --text-color: #ecf0f1;
    --text-light: #ecf0f1;
    --accent-color: #6a11cb;
    --secondary-accent: #fd821d;
    --button-bg: #6a11cb;
    --button-text: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

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

/* Global body styling with animated background */
body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-color);
    transition: background-color 0.5s ease-in-out, color 0.5s ease-in-out;
    min-height: 100vh;
    scroll-behavior: smooth;
    
    /* Animated background */
    background: linear-gradient(135deg, var(--background-color), var(--background-darker));
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Loader */
#loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: var(--background-darker);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.loader {
    border: 5px solid var(--background-color);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Header & Navbar */
header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
    transition: color 0.3s ease;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease, transform 0.2s ease;
    padding-bottom: 5px;
    position: relative;
}

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

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

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

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle-button {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.theme-toggle-button:hover {
    color: var(--accent-color);
}

/* Hamburger Menu */
.burger-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Main content */
main {
    margin-top: 80px;
}

/* Hero section */
.hero {
    color: var(--text-color); /* Fix for light mode visibility */
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.blinking-cursor {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    from, to { color: transparent; }
    50% { color: var(--text-color); } /* Blink color now adapts to theme */
}

.cta-button {
    display: inline-block;
    background: var(--button-bg);
    color: var(--button-text);
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s both;
    box-shadow: 0 5px 15px var(--shadow-color);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.cta-button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px var(--shadow-color);
}

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

/* Section styling */
.section-container {
    padding: 80px 0;
    position: relative;
}

.section-container:nth-child(odd) {
    background: var(--background-darker);
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

/* About section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    text-align: center;
}

.profile-img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--accent-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px var(--shadow-color);
}

.about-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-color);
    opacity: 0.8;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.contact-item {
    background: var(--background-color);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-color);
}

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

.skill-category {
    background: var(--background-darker);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background: var(--accent-color);
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Projects section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--background-darker);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid transparent;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.project-header {
    background: var(--accent-color);
    color: white;
    padding: 1.5rem;
    position: relative;
}

.project-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.project-tech {
    font-size: 0.9rem;
    opacity: 0.9;
}

.project-content {
    padding: 1.5rem;
    color: var(--text-color);
}

.project-content ul {
    list-style: none;
    margin-bottom: 1rem;
}

.project-content li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
}

.project-content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.project-links {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-link {
    background: var(--accent-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.project-link:hover {
    background: var(--secondary-accent);
    transform: translateY(-2px);
    box-shadow: 0 5px 10px var(--shadow-color);
}

.project-link:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px var(--shadow-color);
}

.live-demo {
    background: var(--secondary-accent);
}

.live-demo:hover {
    background: var(--accent-color);
}

/* Education section */
.education-card {
    background: var(--background-darker);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow-color);
    max-width: 600px;
    margin: 0 auto;
    color: var(--text-color);
}

.education-card h3 {
    color: var(--accent-color);
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.degree {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.gpa {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-accent) 100%);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: inline-block;
    margin-top: 1rem;
}

/* Achievements section */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: var(--background-darker);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform 0.3s ease;
    color: var(--text-color);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.achievement-number {
    font-size: 2.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.achievement-label {
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* Contact section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.contact-card {
    background: var(--background-darker);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform 0.3s ease;
    word-wrap: break-word;
    overflow-wrap: break-word;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: var(--text-color);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.contact-card a {
    text-decoration: none;
    color: var(--accent-color);
    font-weight: 600;
    word-break: break-word;
    hyphens: auto;
    transition: color 0.3s ease;
}

.contact-card a:hover {
    color: var(--secondary-accent);
}

.contact-card h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Footer */
footer {
    background: var(--background-darker);
    color: var(--text-color);
    text-align: center;
    padding: 2rem 0;
    box-shadow: 0 -2px 10px var(--shadow-color);
}

/* Responsive design for Navbar and layout */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--background-darker);
        backdrop-filter: blur(10px);
        box-shadow: 0 5px 15px var(--shadow-color);
        padding: 1rem 0;
        gap: 0.5rem;
    }
    
    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        color: var(--text-color);
        padding: 10px 0;
    }

    .burger-menu {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .projects-grid,
    .skills-grid,
    .achievements-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* Utilities and Animations */

/* Shining border effect */
.shining-border {
    position: relative;
    z-index: 1;
}

.shining-border::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 15px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-accent) 50%, var(--accent-color) 100%);
    background-size: 200% 200%;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
    animation: shine 4s linear infinite;
    opacity: 0.5;
}

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

/* Fade-in animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

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

/* Hide the scrollbar for a cleaner look */
body::-webkit-scrollbar {
    width: 0;
}

body {
    -ms-overflow-style: none; /* IE and Edge */
    scrollbar-width: none; /* Firefox */
}