@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');

:root {
    --primary-color: #007bff; /* A vibrant blue for accents, links, buttons */
    --secondary-color: #28a745; /* A complementary green for success/action */
    --text-color: #333; /* Dark gray for main text */
    --light-text-color: #555; /* Slightly lighter gray for secondary text */
    --bg-color: #f8f8f8; /* Light background for body */
    --card-bg-color: #fff; /* White background for cards/sections */
    --border-color: #eee; /* Light gray for borders/separators */
    --shadow-color: rgba(0, 0, 0, 0.1); /* Subtle shadow color */
    --dark-bg-color: #2c3e50; /* Dark blue/gray for footer */
    --dark-text-color: #f2f2f2; /* Light text on dark backgrounds */
}

/* Basic Reset & Font (Update this section to use variables) */
body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color); /* Use variable */
    color: var(--text-color); /* Use variable */
    line-height: 1.6;
}


/* Header Styling (like Rammaheshwari's clean header) */
header {
    background-color: var(--card-bg-color);
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
    box-shadow: 0 1px 3px var(--shadow-color); /* Add subtle shadow to header */
}


header h1 {
    margin: 0;
    font-size: 2.8em; /* Slightly larger name */
    color: var(--primary-color);
    font-weight: 700; /* Use bold font weight for name */
    letter-spacing: -0.03em; /* Slightly tighter letter spacing */
}

header p { /* Style for "Software Engineer | Full-Stack Developer" */
    font-size: 1.2em;
    color: var(--light-text-color);
    margin-top: 5px;
    margin-bottom: 20px;
}


/* Navigation Styling */
nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 40px; /* More space between nav items */
}


nav ul li a {
    text-decoration: none;
    color: var(--light-text-color);
    font-weight: 600; /* Semi-bold for nav links */
    font-size: 1.15em; /* Slightly larger nav links */
    padding: 5px 0; /* Add vertical padding for clickable area */
    transition: color 0.3s ease, border-bottom 0.3s ease; /* Smooth transition for hover */
    border-bottom: 2px solid transparent; /* Transparent border for hover effect */
}


nav ul li a:hover {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color); /* Underline effect on hover */
}


/* Main Content Area */
main {
    max-width: 1000px;
    margin: 60px auto; /* More top/bottom margin */
    padding: 0 20px; /* Padding for left/right inside main */
    /* background-color: var(--card-bg-color); Remove individual main background, sections will have it */
    /* border-radius: 8px; */
    /* box-shadow: 0 2px 4px var(--shadow-color); */
}


section {
    background-color: var(--card-bg-color); /* White background for each section */
    padding: 50px; /* More generous padding inside sections */
    margin-bottom: 40px; /* More space below each section */
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--shadow-color); /* Stronger shadow for sections */
    border: 1px solid var(--border-color); /* Subtle border */
}

section:last-child {
    margin-bottom: 0; /* No margin for the very last section */
    border-bottom: 1px solid var(--border-color); /* Ensure last section still has a border if it's the only one */
}

h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 40px; /* More space below section headings */
    font-size: 2.5em;
    font-weight: 700;
    position: relative; /* For potential underline effect */
    padding-bottom: 15px; /* Space for underline */
}

h2::after { /* Pseudo-element for a subtle underline under H2 */
    content: '';
    display: block;
    width: 60px; /* Short underline */
    height: 4px;
    background-color: var(--primary-color);
    margin: 10px auto 0; /* Center the underline */
    border-radius: 2px;
}

/* About Page Specific Styles */
.education-item,
.experience-item {
    background-color: var(--bg-color); /* Lighter background for these items */
    padding: 25px;
    margin-bottom: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05); /* Lighter shadow */
}

.education-item h3,
.experience-item h3 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.6em;
    font-weight: 600;
}

.education-item p,
.experience-item p {
    font-size: 1.05em;
    color: var(--light-text-color);
    margin-bottom: 10px;
    text-align: left; /* Ensure text aligns left here */
}

.education-item ul,
.experience-item ul {
    list-style: disc; /* Use standard bullet points */
    margin-left: 25px; /* Indent list items */
    padding-left: 0;
    margin-top: 15px;
}

.education-item li,
.experience-item li {
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 1em;
}
/* Ensure general list styles also apply */
ul li {
    line-height: 1.5; /* Good line height for all lists */
}


p {
    line-height: 1.7; /* Slightly more line height for paragraphs */
    margin-bottom: 20px; /* More space below paragraphs */
    font-size: 1.1em; /* Slightly larger body text */
    text-align: justify; /* Justify text for a cleaner block look */
}


/* Image Styling */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto; /* More margin around main images */
    border-radius: 12px; /* More rounded corners for main images */
    box-shadow: 0 4px 8px var(--shadow-color); /* Shadow for images */
}


/* Footer Styling */
footer {
    text-align: center;
    padding: 30px;
    margin-top: 60px;
    background-color: var(--dark-bg-color); /* Darker footer */
    color: var(--dark-text-color);
    font-size: 0.9em;
}


footer a {
    color: var(--primary-color); /* Use primary color for links */
    text-decoration: none;
    font-weight: 600;
}


footer a:hover {
    text-decoration: underline;
}


/* Contact Form Styling */
.contact-form {
    max-width: 600px; /* Limit form width */
    margin: 40px auto; /* Center the form within its section */
    padding: 30px;
    background-color: var(--card-bg-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 20px; /* Space between form fields */
}

.form-group label {
    display: block; /* Make labels take full width and stack */
    margin-bottom: 8px; /* Space between label and input */
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1em;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px); /* Full width minus padding */
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1em;
    font-family: 'Inter', sans-serif; /* Ensure font consistency */
    color: var(--text-color);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--primary-color); /* Highlight border on focus */
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25); /* Subtle glow on focus */
    outline: none; /* Remove default browser outline */
}

.form-group textarea {
    resize: vertical; /* Allow vertical resizing, prevent horizontal */
}

.submit-button {
    display: block; /* Make button take full width */
    width: 100%; /* Or set a specific max-width and margin auto to center */
    padding: 15px 25px;
    background-color: var(--primary-color);
    color: var(--dark-text-color);
    border: none;
    border-radius: 8px;
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer; /* Indicate it's clickable */
    transition: background-color 0.3s ease, transform 0.2s ease;
    letter-spacing: 0.05em;
}

.submit-button:hover {
    background-color: #0056b3; /* Darker blue on hover */
    transform: translateY(-2px);
}

/* Responsive adjustments for form */
@media (max-width: 768px) {
    .contact-form {
        padding: 20px;
        margin: 20px auto;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group textarea {
        width: calc(100% - 20px); /* Maintain padding */
        padding: 10px;
        font-size: 0.95em;
    }

    .form-group label {
        font-size: 1em;
    }

    .submit-button {
        padding: 12px 20px;
        font-size: 1.1em;
    }
}

/* Project Cards Styling (for homepage featured projects) */
/* Project Cards Styling (for homepage featured projects) */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); /* Slightly wider min width for cards */
    gap: 40px; /* More space between grid items */
    padding: 30px 0;
}

.project-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px; /* More rounded corners */
    padding: 25px; /* More padding */
    text-align: center;
    box-shadow: 0 4px 8px var(--shadow-color); /* Stronger shadow */
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    display: flex; /* Use flexbox for vertical content alignment within card */
    flex-direction: column;
    justify-content: space-between; /* Pushes content to top/bottom */
    align-items: center; /* Centers horizontally */
}

.project-card:hover {
    transform: translateY(-8px); /* Lift card slightly more on hover */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2); /* Deeper shadow on hover */
}

.project-card h3 {
    color: var(--primary-color);
    font-size: 1.6em;
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 600;
}


.project-card img {
    max-width: 90%; /* Larger images within cards */
    height: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-color);
}


.project-card p {
    font-size: 1em;
    color: var(--light-text-color);
    text-align: center; /* Center text within card */
    flex-grow: 1; /* Allow paragraph to take up available space */
}

.project-card p strong { /* Style for the 'Technologies' bold text */
    color: var(--text-color);
}

.project-card .project-links { /* New container for project links */
    margin-top: 20px;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 15px;
}


.project-card a {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--dark-text-color);
    padding: 10px 20px;
    margin: 0; /* Remove previous margin */
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.95em;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
}


.project-card a:hover {
    background-color: #0056b3; /* Slightly darker blue on hover */
    transform: translateY(-2px); /* Slight lift on link hover */
}


/* "View All Projects" button (style as a button, not inline anymore) */
.button {
    display: inline-block;
    background-color: var(--secondary-color); /* Green color for the button */
    color: var(--dark-text-color);
    padding: 15px 30px; /* Larger padding for button */
    border-radius: 8px;
    text-decoration: none;
    font-size: 1.2em; /* Larger font size */
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: background-color 0.3s ease, transform 0.2s ease;
}


.button:hover {
    background-color: #218838; /* Darker green on hover */
    transform: translateY(-3px); /* Lift button on hover */
}


/* Project Table Styling (for projects.html) */
.project-table-container {
    overflow-x: auto;
    margin-top: 30px;
    margin-bottom: 30px;
    border-radius: 8px; /* Rounded corners for the container */
    box-shadow: 0 2px 5px var(--shadow-color); /* Subtle shadow for table container */
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 auto;
    min-width: 600px; /* Ensure table doesn't get too squished on small screens before scrolling */
}


table th, table td {
    border: 1px solid var(--border-color);
    padding: 15px; /* More padding for table cells */
    text-align: left;
    font-size: 1em;
}


table th {
    background-color: var(--primary-color);
    color: var(--dark-text-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9em;
    letter-spacing: 0.05em;
}


table tr:nth-child(even) {
    background-color: #f6f6f6; /* Slightly darker stripe */
}

table tr:hover {
    background-color: #e0e0e0; /* More noticeable hover */
}


table td a {
    color: var(--primary-color);
    text-decoration: none;
    margin-right: 15px; /* More space between links */
    font-weight: 500;
}


table td a:hover {
    text-decoration: underline;
}

/* Basic Responsive Adjustments (Mobile first approach) */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.2em;
    }

    header p {
        font-size: 1em;
        margin-bottom: 10px;
    }

    nav ul {
        flex-direction: column;
        gap: 12px;
        padding-bottom: 10px; /* Add padding at bottom for appearance */
    }


    nav ul li a {
        font-size: 1.05em;
    }

    main {
        margin: 30px auto;
        padding: 0 15px;
    }

    section {
        padding: 30px; /* Reduce section padding on small screens */
        margin-bottom: 25px;
    }


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

    h2::after {
        width: 40px; /* Smaller underline on mobile */
        height: 3px;
    }

    p {
        font-size: 1em;
        text-align: left; /* No justify on mobile to prevent awkward spacing */
    }

    img {
        margin: 20px auto;
        border-radius: 8px;
    }


    .project-grid {
        grid-template-columns: 1fr; /* Single column for cards on small screens */
        gap: 25px;
        padding: 15px 0;
    }


    .project-card {
        padding: 20px;
        border-radius: 10px;
    }

    .project-card h3 {
        font-size: 1.4em;
    }

    .project-card img {
        max-width: 85%;
    }

    .project-card a {
        padding: 8px 15px;
        font-size: 0.85em;
    }

    .button {
        padding: 12px 20px;
        font-size: 1em;
        border-radius: 6px;
    }
    table th, table td {
        padding: 10px 12px;
        font-size: 0.9em;
    }

    
}



    /* --- Project Detail Page Specific Styles --- */
    .project-detail-page {
        max-width: 900px; /* Wider content area for detail */
        margin-top: 40px;
        margin-bottom: 60px;
        padding: 0 20px; /* Add some horizontal padding for smaller screens */
    }

    .project-header {
        text-align: center;
        margin-bottom: 40px;
        padding-bottom: 20px;
        border-bottom: 1px solid var(--border-color, #eee); /* Use a default if var not defined */
    }

    .project-title {
        font-size: 2.8em;
        color: var(--primary-color, #333);
        margin-bottom: 10px;
    }

    .project-tagline {
        font-size: 1.3em;
        color: var(--light-text-color, #666);
        margin-bottom: 20px;
    }

    .project-meta {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 15px;
        margin-bottom: 25px;
        font-size: 0.95em;
        color: var(--text-color, #555);
    }

    .project-meta .meta-item strong {
        color: var(--primary-color, #333);
    }

    .project-links-detail {
        display: flex;
        justify-content: center;
        gap: 15px;
        flex-wrap: wrap;
    }

    .project-links-detail .button {
        padding: 12px 25px;
        font-size: 1.1em;
    }

    .project-overview img,
    .project-interactive-demo iframe,
    .project-video-demo .video-container {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
        margin: 25px auto; /* Center images/videos */
        display: block; /* Ensure block level for margin auto */
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    .image-caption {
        text-align: center;
        font-style: italic;
        font-size: 0.9em;
        color: var(--light-text-color, #777);
        margin-top: -15px; /* Pull caption closer to image */
        margin-bottom: 30px;
    }

    /* For responsive video embeds */
    .video-container {
        position: relative;
        padding-bottom: 56.25%; /* 16:9 aspect ratio */
        height: 0;
        overflow: hidden;
        margin-bottom: 30px;
    }

    .video-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

    .project-overview,
    .project-features,
    .project-challenges,
    .project-learnings,
    .project-interactive-demo,
    .back-to-projects {
        margin-bottom: 40px;
    }

    .project-detail-page h2 {
        font-size: 2.2em;
        color: var(--primary-color, #333);
        margin-top: 35px;
        margin-bottom: 20px;
        border-bottom: 1px solid var(--border-color, #ddd);
        padding-bottom: 10px;
    }

    .project-detail-page h3 { /* For subheadings within sections */
        font-size: 1.6em;
        color: var(--secondary-color, #555);
        margin-top: 25px;
        margin-bottom: 15px;
    }

    .project-detail-page p,
    .project-detail-page ul {
        line-height: 1.7;
        margin-bottom: 15px;
        text-align: left;
    }

    .project-detail-page ul {
        list-style: disc;
        margin-left: 25px;
        padding-left: 0;
    }

    .project-detail-page ul li {
        margin-bottom: 8px;
    }

    .back-to-projects {
        text-align: center;
        margin-top: 50px;
    }

    .back-to-projects .button {
        background-color: var(--accent-color, #007bff);
        color: var(--button-text-color, white);
    }

    /* Additional style for small-button if you add it to projects.html */
    .small-button {
        padding: 8px 15px; /* Smaller padding */
        font-size: 0.9em;  /* Smaller font size */
    }

    /* Basic color variables if you want to define them for consistency */
    /* :root {
        --primary-color: #333;
        --secondary-color: #555;
        --text-color: #444;
        --light-text-color: #777;
        --accent-color: #007bff;
        --accent-hover-color: #0056b3;
        --background-light: #f9f9f9;
        --button-text-color: white;
        --border-color: #eee;
    } */

    /* Responsive adjustments for smaller screens */
    @media (max-width: 768px) {
        .project-detail-page {
            margin-top: 20px;
            margin-bottom: 40px;
        }
        .project-title {
            font-size: 2em;
        }
        .project-tagline {
            font-size: 1.1em;
        }
        .project-detail-page h2 {
            font-size: 1.8em;
        }
        .project-detail-page h3 {
            font-size: 1.3em;
        }
    }
    
    /* --- Back to Top Button Styles --- */
    #backToTopBtn {
        display: none; /* Hidden by default */
        position: fixed; /* Fixed position */
        bottom: 30px; /* 30px from the bottom */
        right: 30px; /* 30px from the right */
        z-index: 99; /* Ensure it's above other content */
        border: none; /* Remove borders */
        outline: none; /* Remove outline */
        background-color: var(--primary-color); /* Uses your vibrant blue (#007bff) */
        color: var(--dark-text-color); /* Uses your light text color (#f2f2f2) for contrast */
        cursor: pointer; /* Add a mouse pointer on hover */
        padding: 15px 20px; /* Some padding */
        border-radius: 50%; /* Make it round */
        font-size: 1.5em; /* Larger arrow */
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: background-color 0.3s, transform 0.3s;
    }

    #backToTopBtn:hover {
        background-color: #0056b3; /* A darker shade of your primary blue for hover */
        transform: translateY(-3px); /* Slight lift effect */
    }