/* --- Global Styles --- */
:root {
    --primary-color: #0056b3;
    --success-color: #198754;
    --danger-color: #dc3545;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
    --border-color: #dee2e6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 30px;
    background-color: #eef2f7; /* Lighter, cooler background */
    color: var(--dark-gray);
    line-height: 1.6;
}

.container {
    max-width: 850px;
    margin: 30px auto;
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #fff;
    /* Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Glassmorphism Header --- */
.header {
    text-align: center;
    padding: 30px 40px;
    position: relative;
    color: #fff;
    overflow: hidden;
}
.header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    
    /* 1. CHANGED: New "Cooperative Green" Gradient */
    background: linear-gradient(
        135deg, 
        #1b5e20, /* Dark professional green */
        #4CAF50, /* A brighter, "Adhunik" green */
        #2e7d32, /* A nice medium green */
        #1b5e20  /* Back to dark */
    );
    
    /* 2. ADDED: Animation Properties */
    background-size: 300% 300%; /* Makes the gradient huge to allow movement */
    animation: animate-gradient 15s ease infinite; /* Applies our new animation */

    filter: blur(10px); /* The blur effect */
    transform: scale(1.1);
}
.header-content {
    position: relative; /* Sits on top of the blurred bg */
    background: rgba(0, 0, 0, 0.2); /* Dark overlay for readability */
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(5px); /* The "glass" effect */
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.header h1 { margin: 0; font-size: 1.8em; }
.header h2 { margin: 5px 0; font-size: 1.2em; font-weight: 500; }
.header p { margin: 5px 0 0; font-weight: 300; }


/* --- Progress Bar (NEW) --- */
.progress-container {
    position: sticky;
    top: 0;
    z-index: 10;
    background: #fff;
    padding: 15px 40px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.progress-bar-wrapper {
    width: 100%;
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
}
.progress-bar {
    width: 0%; /* Will be updated by JS */
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease-in-out;
}
.progress-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-size: 0.8em;
    color: #6c757d;
}
.progress-step {
    transition: color 0.3s ease;
}
.progress-step.active {
    color: var(--primary-color);
    font-weight: 600;
}


/* --- Form Styles --- */
form {
    padding: 30px 40px;
}

.section {
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: #fff;
    transition: box-shadow 0.3s ease;
}
.section h3 {
    font-size: 1.3em;
    color: var(--primary-color);
    padding: 20px 25px;
    margin: 0;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--light-gray);
    border-radius: 12px 12px 0 0;
}
.section-content {
    padding: 25px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

/* --- Form Groups & Inputs --- */
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.95em;
    color: #495057;
    transition: color 0.3s ease;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #ced4da;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1em;
    transition: all 0.3s ease;
}
.form-group:focus-within label {
    color: var(--primary-color); /* Highlight label on focus */
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
    outline: none;
}

/* --- Instant Validation (NEW) --- */
/* Add a red border if field is required, invalid, and not empty */
.form-group input:invalid:required:not(:placeholder-shown):not(:focus) {
    border-color: var(--danger-color);
    background-color: #fff8f8;
}
/* Add a green border if field is required and valid */
.form-group input:valid:required:not(:placeholder-shown) {
    border-color: var(--success-color);
}

.radio-group label {
    font-weight: 500;
}

/* --- Modern File Upload --- */
.file-upload-wrapper {
    position: relative;
    width: 100%;
    height: 45px;
}
.file-upload-wrapper input[type="file"] {
    position: absolute;
    left: 0; top: 0;
    width: 100%; height: 100%;
    opacity: 0;
    cursor: pointer;
}
.file-upload-label {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    background-color: var(--light-gray);
    border: 2px dashed #adb5bd;
    border-radius: 8px;
    font-weight: 500;
    color: #495057;
    transition: all 0.3s ease;
    cursor: pointer;
}
.file-upload-wrapper input[type="file"]:hover + .file-upload-label {
    border-color: var(--primary-color);
    color: var(--primary-color);
}
/* NEW class added by JS */
.file-upload-label.file-selected {
    background-color: #e8f5e9;
    border-color: var(--success-color);
    color: #0f5132;
    border-style: solid;
    font-weight: 600;
}


/* --- Grid Layouts --- */
.grid-2 { grid-template-columns: 1fr 1fr; gap: 25px; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; gap: 25px; }

/* --- Submit Button --- */
.submit-btn {
    display: block;
    width: 100%;
    padding: 15px;
    font-size: 1.2em;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    /* Modern Gradient */
    color: white;
    background: linear-gradient(90deg, #28a745 0%, #218838 100%);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.2);
    transition: all 0.3s ease;
}
.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.3);
}
.submit-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 10px rgba(40, 167, 69, 0.3);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    body { padding: 10px; }
    .container { margin: 10px auto; }
    form { padding: 15px 20px; }
    .progress-container { padding: 10px 20px; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .header h1 { font-size: 1.5em; }
    .header h2 { font-size: 1.1em; }
}
/* --- New Gradient Animation --- */
@keyframes animate-gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}