/* Basic Reset and Body Styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif; /* Common web font */
    line-height: 1.7;
    color: #333; /* Dark grey text */
    background-color: #f4f4f4; /* Light background */
    scroll-behavior: smooth;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Navigation Bar */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff; /* White background */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); /* More prominent shadow */
    z-index: 1000;
    padding: 10px 0;
}

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

#main-nav .logo {
    font-weight: 700;
    font-size: 1.8em;
    color: #333;
}

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

#main-nav ul li {
    margin-left: 25px;
}

#main-nav ul li a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 5px 0;
}

#main-nav ul li a:hover {
    color: #007bff; /* Standard blue accent */
}

/* Mobile Menu Toggle (Hamburger) */
.menu-toggle {
    display: none; /* Hidden on desktop */
    flex-direction: column;
    cursor: pointer;
    width: 30px;
    height: 20px;
    justify-content: space-between;
}

.menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Animation for Menu Toggle (Hamburger to Cross) */
.menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

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


/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    /* Example background - replace with your own image */
    background: url('https://placehold.co/1920x1080/007bff/ffffff?text=E2Dev+Hero+Background') no-repeat center center/cover;
    color: #fff;
    position: relative;
    padding-top: 60px; /* Offset for fixed header */
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5); /* Darker overlay */
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section h1 {
    font-size: 3.5em;
    margin-bottom: 15px;
    font-weight: 700;
}

.hero-section p {
    font-size: 1.3em;
    font-weight: 400;
    margin-bottom: 30px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    font-size: 1.1em;
    font-weight: 500;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: #007bff; /* Primary blue */
    color: #fff;
}

.btn-primary:hover {
    background-color: #0056b3; /* Darker blue on hover */
}

.btn-secondary {
    background-color: #6c757d; /* Secondary grey */
    color: #fff;
}

.btn-secondary:hover {
    background-color: #545b62; /* Darker grey on hover */
}


/* Content Sections */
.content-section {
    padding: 80px 0; /* Standard padding */
    border-bottom: 1px solid #e0e0e0; /* Subtle separator */
    background-color: #fff; /* White background */
    color: #333;
}

.content-section.bg-light {
    background-color: #f8f9fa; /* Light grey background for alternate sections */
}

.content-section:last-child {
    border-bottom: none;
}

.content-section h2 {
    text-align: center;
    margin-bottom: 50px;
    color: #333;
    font-size: 2.5em;
    font-weight: 600;
}

.content-section p {
    margin-bottom: 20px;
    font-size: 1.1em;
    color: #555;
}

/* Grid Layouts */
.grid-layout {
    display: grid;
    gap: 30px; /* Standard gap */
    margin-top: 30px;
}

.grid-layout.three-col {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-layout.two-col {
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}


.grid-item {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1); /* Standard shadow */
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grid-item:hover {
    transform: translateY(-5px); /* Subtle lift */
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.grid-item .icon {
    font-size: 3em;
    color: #007bff; /* Primary accent color */
    margin-bottom: 20px;
}

.grid-item h3 {
    font-size: 1.5em;
    color: #333;
    margin-bottom: 10px;
}

.grid-item p {
    font-size: 1em;
    color: #555;
    margin-bottom: 0;
}


/* Projects Grid */
.project-grid .project-item {
    display: flex;
    flex-direction: column;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-grid .project-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}


.project-item img {
    width: 100%;
    height: 200px; /* Consistent height */
    object-fit: cover;
    display: block;
}

.project-item .project-info {
    padding: 20px;
    flex-grow: 1; /* Allow info to take available space */
    display: flex;
    flex-direction: column;
}

.project-item h3 {
    font-size: 1.4em;
    color: #333;
    margin-bottom: 10px;
}

.project-item p {
    font-size: 1em;
    color: #555;
    margin-bottom: 20px; /* Space before button */
    flex-grow: 1; /* Allow paragraph to take available space */
}

.project-item .btn {
    align-self: flex-start; /* Align button to the left */
}


/* Contact Info */
.contact-info .contact-item {
     background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    text-align: center;
}

.contact-info .icon {
    font-size: 2.5em;
    color: #007bff;
    margin-bottom: 10px;
}

.contact-info p {
    margin-bottom: 0;
    font-size: 1em;
    color: #555;
}

/* About Details */
.about-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.about-item {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
     transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-item:hover {
     transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.about-item .icon {
    font-size: 3em;
    color: #007bff;
    margin-bottom: 20px;
}

.about-item h3 {
    font-size: 1.5em;
    color: #333;
    margin-bottom: 10px;
}

.about-item p {
     font-size: 1em;
    color: #555;
    margin-bottom: 0;
}


/* Footer */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9em;
}

/* Animations */

/* Fade In Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Animation Delays */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; }
.delay-700 { transition-delay: 0.7s; }
.delay-800 { transition-delay: 0.8s; }


/* Mobile Responsiveness */
@media (max-width: 768px) {
    #main-nav .container {
        flex-direction: row;
        justify-content: space-between;
    }

    #main-nav .nav-links {
        display: none;
        flex-direction: column;
        text-align: center;
        width: 100%;
        position: absolute;
        top: 50px;
        left: 0;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 10px 0;
    }

    #main-nav .nav-links.show {
        display: flex;
    }

    #main-nav ul li {
        margin: 10px 0;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-section {
        padding-top: 80px;
    }

    .hero-section h1 {
        font-size: 2.5em;
    }

    .hero-section p {
        font-size: 1.1em;
    }

    .btn {
        padding: 10px 20px;
        font-size: 1em;
    }

    .content-section {
        padding: 60px 0;
    }

    .content-section h2 {
        font-size: 2em;
        margin-bottom: 30px;
    }

    .grid-layout.three-col,
    .grid-layout.two-col {
        grid-template-columns: 1fr; /* Stack items vertically on small screens */
        gap: 20px;
    }

    .grid-item,
    .project-item,
    .contact-item,
    .about-item {
        padding: 20px;
    }

    .grid-item .icon,
    .contact-info .icon,
    .about-item .icon {
        font-size: 2.5em;
        margin-bottom: 15px;
    }

    .project-item img {
        height: 180px;
    }

    .project-item h3 {
        font-size: 1.3em;
    }

     .project-item .project-info {
        padding: 15px;
    }
}