/* Base Styles and Font Import */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');


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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

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

a:hover {
    color: var(--primary-dark);
}

ul {
    list-style-position: inside;
}

section {
    padding: 80px 0;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-color);
    line-height: 1.3;
}

h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 10px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
}

p {
    margin-bottom: 20px;
}

/* ----------------------------------------------------
   Buttons
----------------------------------------------------- */
.btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.primary-btn {
    background: var(--primary-color);
    color: var(--bg-color);
}

.primary-btn:hover {
    background: var(--primary-dark);
    color: var(--bg-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 112, 243, 0.2);
}

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

.secondary-btn:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 112, 243, 0.2);
}

/* ----------------------------------------------------
   Header & Navigation
----------------------------------------------------- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 80px;
    background-color: var(--bg-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
}


header.scrolled {
    padding: 15px 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
    transition: text-shadow 0.3s ease-in-out;
}

.logo:hover {
    transform: scale(1.2);
    text-shadow: 0 0 10px #04d9ff, 0 0 20px #04d9ff, 0 0 40px #04d9ff;
}


nav ul {
    display: flex;
    list-style-type: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    position: relative;
    font-weight: 500;
    transition: var(--transition);
    color: var(--text-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

nav ul li a:hover::after {
    width: 100%;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    transition: var(--transition);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--bg-color);
    box-shadow: -5px 0 15px var(--shadow-color);
    z-index: 999;
    padding: 100px 30px 30px;
    transition: var(--transition);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    list-style: none;
    gap: 20px;
}

.mobile-menu ul li a {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-color);
}

.mobile-menu .theme-toggle.mobile {
    margin-top: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu .theme-toggle.mobile span {
    font-size: 1rem;
    color: var(--text-color);
}

/* ----------------------------------------------------
   Project Hero Section
----------------------------------------------------- */
.project-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff; /* Fixed to white for strong contrast */
    padding: 100px 0 80px;
    position: relative;
}

.project-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB2aWV3Qm94PSIwIDAgMTAwIDEwMCIgcHJlc2VydmVBc3BlY3RSYXRpbz0ieE1pZFlNaWQgc2xpY2UiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PHBhdGggZD0iTTAgNTBMMTYuNyA1NS40QzMzLjMgNjAuNyA2Ni43IDcxLjQgMTAwIDY1LjFMMTAwIDEwMEgwWiIgZmlsbD0iI2ZmZmZmZiIgZmlsbC1vcGFjaXR5PSIwLjEiLz48L3N2Zz4=');
    background-size: cover;
    opacity: 0.2;
}

.breadcrumbs {
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.breadcrumbs a, .breadcrumbs span {
    color: rgba(255, 255, 255, 0.9);
}

.project-hero h1 {
    color: #ffffff;
    margin-bottom: 20px;
}

.project-intro {
    max-width: 800px;
}

.project-intro p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tags span {
    background: rgba(255, 255, 255, 0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(5px);
}

/* ----------------------------------------------------
   Project Overview
----------------------------------------------------- */
.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.overview-content p {
    margin-bottom: 20px;
}

.overview-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* ----------------------------------------------------
   Project Demo
----------------------------------------------------- */
.project-demo {
    background-color: var(--bg-alt-color);
}

.demo-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: 10px 25px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: var(--transition);
}

.tab-btn:hover, .tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.image-caption {
    padding: 15px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.video-demo {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 56.25%;
}

.video-demo iframe {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.video-caption {
    text-align: center;
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.live-demo-placeholder {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 50px;
    text-align: center;
    box-shadow: var(--shadow);
}

.live-demo-placeholder i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.demo-btn {
    background: var(--primary-color);
    color: var(--bg-color);
    border: none;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 20px;
}

.demo-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 112, 243, 0.2);
}

.demo-note {
    margin-top: 15px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ----------------------------------------------------
   Features Section
----------------------------------------------------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 3px solid var(--primary-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.feature-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ----------------------------------------------------
   Technical Details
----------------------------------------------------- */
.technical-details {
    background-color: var(--bg-alt-color);
}

.implementation-content h3 {
    margin-top: 30px;
    margin-bottom: 15px;
}

.implementation-content ul {
    margin-bottom: 20px;
    list-style-type: disc;
    padding-left: 20px;
}

.implementation-content li {
    margin-bottom: 10px;
}

 .code-snippet {
        background: var(--bg-alt-color);
        border-radius: 8px;
        padding: 20px;
        margin: 20px 0;
        overflow-x: auto;
        border: 2px solid var(--border-color);
        color: var(--text-color);
        
}

.code-snippet pre {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ----------------------------------------------------
   Learning Outcomes
----------------------------------------------------- */
.outcomes-content p {
    margin-bottom: 30px;
}

.outcome-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.outcome-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.outcome-card h3 {
    margin-bottom: 10px;
}

.outcome-card p {
    margin-bottom: 0;
    color: var(--text-muted);
}

/* ----------------------------------------------------
   Future Improvements
----------------------------------------------------- */
.future-improvements {
    background-color: var(--bg-alt-color);
}

.improvements-content ul {
    list-style-type: none;
    padding: 0;
}

.improvements-content li {
    background: var(--card-bg);
    margin-bottom: 15px;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    position: relative;
    padding-left: 35px;
    transition: var(--transition);
}

.improvements-content li:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.improvements-content li::before {
    content: '→';
    position: absolute;
    left: 15px;
    color: var(--primary-color);
}

/* ----------------------------------------------------
   Call to Action
----------------------------------------------------- */
.project-cta {
    text-align: center;
    padding: 100px 0;
    background: linear-gradient(to right, rgba(0, 112, 243, 0.05), rgba(108, 99, 255, 0.05));
}

.project-cta h2 {
    margin-bottom: 20px;
}

.project-cta h2::after {
    left: 50%;
    transform: translateX(-50%);
}

.project-cta p {
    max-width: 600px;
    margin: 0 auto 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* ----------------------------------------------------
   Footer
----------------------------------------------------- */
footer {
    /* In the original CSS footer used a dark background.
       Here we use a background that adapts to the theme.
       You might consider adding a dedicated footer variable if needed. */
    background: var(--bg-alt-color);
    color: var(--text-color);
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 40px;
}



.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {

    color: var(--text-color);
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-alt-color);;
    border-radius: 50%;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-color);
}

/* ----------------------------------------------------
   Animations
----------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}




/* ----------------------------------------------------
   Responsive Styles
----------------------------------------------------- */
@media (max-width: 992px) {
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .overview-image {
        order: -1;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        max-width: 300px;
        margin: 0 auto;
    }
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    header {
        padding: 20px;
    }
    
    header.scrolled {
        padding: 15px 20px;
    }
    
    nav ul {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .theme-toggle {
        display: none;
    }
    
  
}


@media (max-width: 576px) {
    section {
        padding: 60px 0;
    }
    
    .project-hero {
        padding: 80px 0 60px;
    }
    
    .tech-tags {
        justify-content: center;
    }
    
    .image-gallery {
        grid-template-columns: 1fr;
    }
    
    .demo-tabs {
        flex-direction: column;
        border: none;
    }
    
    .tab-btn {
        border: 1px solid var(--border-color);
        margin-bottom: 5px;
        border-radius: 5px;
    }
    
    .tab-btn::after {
        display: none;
    }
    
    .tab-btn.active {
        background: var(--primary-color);
        color: var(--bg-color);
    }
}