/* --- 0. Global Reset & Box Sizing --- */
* {
    margin: 0;
    padding: 0;
    /* box-sizing: border-box;  */
}

body {
    background-color: #0d1117; 
    /* Ensure the path to your background image is correct */
    background-image: url('Gemini_Generated_Image_5iv5sl5iv5sl5iv5.png'); 
    background-size: cover;
    background-position: center;
    background-attachment: fixed; 
    min-height: 100vh;
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #e6edf3; 
}

/* --- 2. Navigation Bar (Desktop/Tablet) --- */
.navbar {
    display: flex;
    align-items: center;
    padding: 10px 40px;
    background-color: rgba(13, 17, 23, 0.9); 
    position: sticky; 
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.ajulogo {
    height: 50px;
    width: auto;
    cursor: pointer;
    margin-right: 20px;
}

.hh-round {
    height: 70px;
    width: 70px;
    margin-right: 20px;
    border: 3px solid #ffffff; 
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.hh-round:hover {
    transform: scale(1.05) rotate(360deg);
    box-shadow: 0 0 15px #ffffff;
}

.navlink {
    list-style: none;
    display: flex; 
    align-items: center;
    margin-left: auto; 
}

.navlink li {
    margin-left: 30px; 
}

.navlink li a {
    text-decoration: none;
    color: #e6edf3;
    font-size: 18px;
    font-weight: 500; 
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.navlink li a:hover {
    color: #0400ff; 
    text-shadow: 0 0 10px rgba(4, 0, 255, 0.7); /* Using primary accent color */
}

/* --- 3. Hamburger Menu Base Styles (Desktop Hidden) --- */
.menu-toggle {
    display: none; /* Hidden on desktop */
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    border: none;
    background: transparent;
    margin-left: auto; 
    z-index: 1001; 
}

.menu-toggle .bar {
    height: 3px;
    width: 100%;
    background-color: #ffffff;
    border-radius: 10px;
    transition: all 0.3s ease-in-out;
}

/* JS Toggled Classes */
.navlink.active {
    display: flex !important; 
}

.menu-toggle.open .bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.menu-toggle.open .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.open .bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* --- 4. Container 1: Hero Section (Only on index.html) --- */
.container1 {
    /* padding-top: 30px; */
    padding-bottom: 100px;
    text-align: center;
}

.hs {
    display: block;
    margin: 0 auto;
    max-width: 80%; 
    height: 500px;
    /* margin-bottom: 40px; */
}

.container1 h2 {
    color: #ffffff;
    font-family: 'Poppins', sans-serif;
    font-size: 2.8em; 
    margin-top: -30px; 
    line-height: 1.2;
}

.container1 h3 {
    color: #9f9f9f; 
    font-family: 'Segoe UI', sans-serif;
    margin-top: 30px;
    font-size: 1.1em;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* --- 5. Container 2: Sections & Highlights / Form Container --- */
.container2 {
    padding: 60px 20px;
    margin: 50px auto;
    max-width: 1100px; 
    background-color: rgba(25, 30, 36, 0.7); 
    border-radius: 12px;
    border: 1px solid #1f3b4d; 
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.qr-code-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-color: #f7f7f7; /* Light background for contrast */
    border-radius: 8px;
    margin-bottom: 25px;
    text-align: center;
}

.qr-code-section h2 {
    color: #333;
    margin-bottom: 15px;
}

.qr-code-box {
    border: 3px solid #0400ff;
    padding: 10px;
    border-radius: 5px;
    background-color: white;
    margin-bottom: 15px;
}
        
.qr-code-box img {
    max-width: 200px;
    height: auto;
    display: block;
}

.upi-details {
    font-size: 1.1em;
    color: #555;
    line-height: 1.6;
}

.upi-details strong {
    color: #0400ff;
}

.container2.registration-container {
    margin-top: 100px;
    padding-bottom: 80px;
}

.container2 h1 {
    text-align: center;
    color: #0400ff;
    font-family: 'Poppins', sans-serif;
    font-size: 3.5em; 
    margin-bottom: 50px;
    text-shadow: 0 0 7px rgba(255, 255, 255, 0.8), 0 0 15px rgb(255, 255, 255);
}

.container2 h1::after {
    content: '';
    display: block;
    width: 300px;
    height: 6px;
    background: #0400ff;
    margin: 10px auto 0;
    border-radius: 2px;
    box-shadow: 0 0 5px rgba(4, 0, 255, 0.8);
}

.container2 ul {
    list-style-type: none;
    padding: 0 40px;
    display: flex; 
    flex-wrap: wrap;
    justify-content: space-around;
}

.container2 li {
    color: #e6edf3;
    font-size: 1.5em;
    font-weight: 400;
    margin: 15px 10px;
    padding: 20px;
    background-color: rgba(30, 40, 50, 0.5); 
    border-left: 5px solid #0400ff; 
    border-radius: 8px;
    flex: 1 1 45%; 
    text-align: left;
}

.form-description {
    text-align: center;
    color: #b0b0b0;
    font-size: 1.1em;
    margin-bottom: 30px;
    padding: 0 20px;
}

.registration-container form {
    max-width: 650px; /* Slightly wider form for desktop */
    margin: 0 auto;
    padding: 20px;
    /* Add subtle container visual break */
    background: rgba(30, 40, 50, 0.2); 
    border-radius: 10px;
}

.form-group {
    margin-bottom: 20px;
    /* Using Flexbox for aligned labels/inputs on desktop */
    display: flex;
    flex-direction: column;
}

.copy-button {
    background: #0400ff;
    color: white;
    border: none;
    padding: 5px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background 0.3s;
}

.copy-button:hover {
    background: #0000e6;
}

.form-group label {
    display: block;
    color: #ffffff;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 1.05em;
    /* Add a subtle text shadow for lift */
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.5);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #1f3b4d; 
    background-color: #1a202c; 
    color: #e6edf3;
    border-radius: 8px; /* Slightly rounder edges */
    font-size: 1em;
    transition: border-color 0.3s, box-shadow 0.3s;
    resize: vertical; 
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #6c757d;
    opacity: 0.7;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0400ff; /* Neon Blue border on focus */
    box-shadow: 0 0 10px rgba(4, 0, 255, 0.8); /* Stronger neon glow on focus */
    background-color: #151a22; /* Slightly darker background on focus */
}

.form-group textarea {
    min-height: 100px; /* Ensure textarea is tall enough */
}

.submit-button {
    display: block;
    width: 100%;
    padding: 15px;
    margin-top: 35px;
    background-color: #0400ff; 
    color: #e6edf3; 
    border: none;
    border-radius: 8px; /* Consistent rounding */
    font-size: 1.25em;
    font-weight: 700;
    cursor: pointer;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5); 
    /* Main button glow */
    box-shadow: 0 0 15px rgba(4, 0, 255, 0.5); 
    transition: background-color 0.3s, transform 0.2s, box-shadow 0.3s;
}

.submit-button:hover {
    background-color: #2bff00; 
    color: #0400ff;
    transform: translateY(-3px); /* More pronounced lift */
    box-shadow: 0 0 20px rgba(4, 0, 255, 0.8), 0 10px 20px rgba(0, 0, 0, 0.5); /* Stronger neon shadow and depth */
}

.form-note {
    text-align: center;
    font-size: 0.9em;
    color: #9f9f9f;
    margin-top: 20px;
}


/* 7. Logo Sections Styling (Your original styles) */
.container2.logo-section {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container2.logo-section .logo-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 20px 0;
}

.container2.logo-section img {
    height: 300px; 
    width: 300px;
    display: inline-block;
    margin: 15px 25px; 
    /* filter: grayscale(100%) brightness(150%);  */
    opacity: 0.7;
    transition: filter 0.5s ease, opacity 0.5s ease;
}

.container2.logo-section img:hover {
    filter: none; 
    opacity: 1;
}

/* 8. Footer Styles */
footer {
    text-align: center;
    padding: 30px 20px;
    background-color: rgba(13, 17, 23, 0.9);
    color: #6c757d;
    font-size: 0.9em;
    margin-top: 50px;
}

footer a {
    color: #0400ff;
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}

/* --- 9. Who We Are Section Styling (Updated) --- */
.who-we-are-section .content {
    /* Existing: max-width for the logo blocks */
    width: 95%; /* Adjusting for team section appearance */
    max-width: 1100px;
    margin: 50px auto;
}

.section-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 50px;
    padding: 30px 20px;
    background: rgba(30, 40, 50, 0.5); /* Darker background */
    border-radius: 15px;
    border: 1px solid #1f3b4d;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.section-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.section-block h3 {
    font-size: 2.2em;
    margin-bottom: 10px;
    color: #0400ff;
    text-shadow: 0 0 5px rgba(4, 0, 255, 0.5);
}

.section-block p {
    font-size: 1.1em;
    color: #c9d1d9;
    max-width: 700px;
    line-height: 1.5;
}

.section-logo {
    width: 200px; /* Smaller logo for the block */
    height: 200px;
    /* margin: 15px 0; */
    /* border-radius: 50%; */
    /* border: 3px solid #0400ff; */
    /* object-fit: contain; */
}

.section-divider {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0), #0400ff, rgba(255, 255, 255, 0));
    margin: 60px 0;
    box-shadow: 0 0 10px rgba(4, 0, 255, 0.8);
}


/* Organizing Team Section Styles */
.organizing-team {
    padding: 0 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.organizing-team h2 {
    color: #e6edf3;
    font-size: 2.5em;
    margin-top: 50px;
    margin-bottom: 30px;
    border-bottom: 2px solid #0400ff;
    padding-bottom: 10px;
    display: inline-block;
}

.organizing-team h2 i.icon {
    margin-right: 10px;
    color: #0400ff;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    /* margin-bottom: 40px; */
}

.team-card {
    background-color: rgba(30, 40, 50, 0.8);
    border: 1px solid #1f3b4d;
    border-radius: 15px;
    padding: 5px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: auto;
}

.team-card:hover {
    transform: scale(1.03);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.7);
}

.team-card img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 4px solid #0400ff;
}

.team-card h4 {
    font-size: 1.5em;
    color: #ffffff;
    margin-bottom: 5px;
}

.team-card .designation {
    font-size: 1.1em;
    color: #95cdff;
    /* margin-bottom: 15px; */
    font-weight: 500;
}

.team-card .contact,
.team-card .email {
    font-size: 0.95em;
    color: #c9d1d9;
    /* margin-bottom: 5px; */
}

.team-card .email a {
    color: #c9d1d9;
    text-decoration: none;
    transition: color 0.3s;
}
.team-card .email a:hover {
    color: #0400ff;
}

.team-card .socials {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.team-card .socials a {
    color: #e6edf3;
    font-size: 1.5em;
    transition: color 0.3s, transform 0.3s;
}

.team-card .socials a:hover {
    transform: translateY(-2px) scale(1.1);
}

.team-card .socials .linkedin:hover { color: #0077B5; }
.team-card .socials .github:hover { color: #ffffff; }
.team-card .socials .instagram:hover { color: #E4405F; }


/* --- New Styles for Participant Fields (Form) --- */
.participant-fieldset {
    border: 1px solid #0400ff; /* Neon border */
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 8px;
    background-color: rgba(30, 40, 50, 0.3);
}

.participant-fieldset legend {
    color: #0400ff;
    font-size: 1.3em;
    font-weight: 700;
    padding: 0 10px;
    border-bottom: none;
    text-shadow: 0 0 5px rgba(4, 0, 255, 0.8);
}

.participant-fieldset .form-group {
    /* Adjust internal form-groups for a tighter layout within fieldset */
    margin-bottom: 15px;
    /* Optional: use flex for horizontal alignment if desired */
}

/* Button to add/remove participants */
.remove-participant-button{
    background-color: #ffffff;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
    margin-top: 10px;
    display: block;
    width: 100%;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.add-participant-button {
    background-color: #0400ff;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
    margin-top: 10px;
    display: block;
    width: 100%;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.add-participant-button:hover, .remove-participant-button:hover {
    background-color: #2bff00;
    color: #0400ff;
}

.remove-participant-button {
    background-color: #ff3333;
    margin-bottom: 20px;
}
.remove-participant-button:hover {
    background-color: #cc0000;
    color: #ffffff;
}

/* --- Styles for Modal/Popup (Terms and Conditions) --- */
/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1002; /* Sit on top of everything */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0, 0, 0, 0.7); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
    background-color: #1a202c;
    margin: 10% auto; /* 10% from the top and centered */
    padding: 30px;
    border: 1px solid #1f3b4d;
    width: 80%; /* Could be more or less, depending on screen size */
    max-width: 700px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(4, 0, 255, 0.5);
    position: relative;
    color: #e6edf3;
}

.modal-content h2 {
    color: #0400ff;
    text-align: center;
    margin-bottom: 20px;
    font-size: 2em;
}

.modal-body {
    max-height: 400px;
    overflow-y: auto;
    padding-right: 15px; /* Space for scrollbar */
}

.modal-body ol {
    list-style-type: decimal;
    margin-left: 20px;
    padding: 0;
}

.modal-body li {
    margin-bottom: 15px;
    line-height: 1.4;
    font-size: 1.05em;
}

/* The Close Button */
.close-button {
    color: #e6edf3;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 20px;
}

.close-button:hover,
.close-button:focus {
    color: #ff3333;
    text-decoration: none;
    cursor: pointer;
}

/* Checkbox group styling */
.checkbox-group {
    display: flex;
    align-items: center;
    margin-top: 30px;
    margin-bottom: 20px;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    /* Optional: Style the checkbox more with accent color */
    accent-color: #0400ff; 
}


/* ================================================= */
/* 📱 MEDIA QUERY FIXES FOR MOBILE DEVICES (max-width: 768px) */
/* ================================================= */
@media (max-width: 768px) {
    /* --- Navbar Fixes --- */
    .navbar {
        flex-wrap: nowrap; 
        justify-content: space-between; 
        padding: 10px 10px; /* Reduced padding */
        position: relative;
    }

    .ajulogo {
        height: 35px; /* Smaller logo */
        margin-right: 5px;
        width: auto;
    }

    .hh-round {
        height: 45px; /* Smaller logo */
        width: 45px;
        margin-right: 0;
    }

    .hs {
        height: 180px; /* Smaller hero image */
    }

    /* Corrected H1 underline width for mobile */
    .container2 h1::after {
        width: 60px;
        height: 4px; /* Slightly thinner underline */
    }
    
    .menu-toggle {
        display: flex; 
        order: 3;
        margin-left: 15px; /* Separate icon from logos */
    }
    
    .navlink {
        display: none; /* Hide menu by default */
        top: 65px; /* Align below the smaller navbar */
        flex-direction: column;
        background-color: rgba(13, 17, 23, 0.95);
        position: absolute;
        left: 0;
        width: 100%;
        padding: 10px 0;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    }
    
    .navlink li {
        margin: 0;
        text-align: center;
        width: 100%;
    }
    
    .navlink li a {
        font-size: 16px; 
        padding: 10px 0;
    }
    
    /* --- Hero Section Fixes --- */
    .container1 {
        padding-top: 40px;
        padding-bottom: 50px;
    }
    
    .container1 h2 {
        font-size: 1.7em; /* Reduced size for better wrapping */
    }

    .container1 h3 {
        font-size: 0.9em; /* Reduced size for better wrapping */
        line-height: 1.4;
    }
    
    /* --- Container and Highlights Fixes --- */
    .container2 {
        max-width: 95%; /* Constrain width */
        margin: 30px auto; 
        padding: 20px 10px; 
    }

    /* Fix spacing on the registration page */
    .container2.registration-container {
        margin-top: 80px;
    }

    .container2 h1 {
        font-size: 2em; 
        margin-bottom: 0px;
    }

    .container2 ul {
        padding: 0;
    }
    
    .container2 li {
        font-size: 1.1em;
        flex: 1 1 100%; /* Make list items stack vertically */
        margin: 10px 0;
        padding: 15px;
        display: flex; 
        align-items: center; 
    }

    .container2.logo-section img {
        height: auto; 
        width: 200px;
        /* margin: 10px 10px; */
    }

    /* Form specific mobile fixes */
    .registration-container form {
        padding: 10px;
    }

    .form-group {
        /* Remove flex on mobile to stack label and input */
        display: block; 
    }

    .form-group label {
        font-size: 1em;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px;
        font-size: 0.95em;
    }

    .submit-button {
        font-size: 1.1em;
        padding: 12px;
    }
    
    /* Who We Are Section Mobile Fixes */
    .organizing-team h2 {
        font-size: 1.8em;
    }
    .team-grid {
        grid-template-columns: 1fr; /* Stack cards vertically */
        gap: 20px;
    }

    /* Modal Mobile Fix */
    .modal-content {
        margin: 20% auto;
        width: 95%;
        padding: 15px;
    }
    .modal-body {
        max-height: 60vh;
    }
    .modal-content h2 {
        font-size: 1.5em;
    }
    .add-participant-button, .remove-participant-button {
        padding: 8px 15px;
        font-size: 0.9em;
    }
    .upiid{
        font-size: x-small;
    }
}

/* ================================================= */
/* 💻 MEDIA QUERY FOR TABLET DEVICES (769px to 1024px) */
/* ================================================= */
@media (min-width: 769px) and (max-width: 1024px) {
    .navbar {padding: 10px 20px;}
    .menu-toggle {display: none;}
    .navlink li {margin-left: 20px;}
    .container1 h2 {font-size: 2.3em;}
    .container2 {max-width: 95%;}
    .container2 li {font-size: 1.4em; flex: 1 1 45%;}
    /* Ensure team grid is still responsive on tablet */
    .team-grid {
        gap: 20px;
    }
    .upiid{
        font-size: x-small;
    }
}