/* General Body and Typography */
body {
    background-color: #e9ecef; /* A softer, light gray background */
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    color: #343a40; /* Darker text for better readability */
}

/* Custom Color Variables for WhatsApp Theme */
:root {
    --whatsapp-green: #25D366; /* Standard WhatsApp green */
    --whatsapp-dark: #075E54; /* Dark green for headers/nav */
    --whatsapp-light-green: #DCF8C6; /* Light green for accents */
    --primary-color: #007bff; /* Bootstrap primary blue */
    --info-color: #17a2b8; /* Bootstrap info blue */
}

/* Navbar Styling */
.navbar {
    background-color: var(--whatsapp-dark) !important; /* Ensure dark green background */
    border-bottom: 3px solid var(--whatsapp-green); /* A subtle green line at the bottom */
}

.navbar-brand {
    color: white !important;
    font-weight: 600; /* Slightly bolder font */
    display: flex;
    align-items: center;
}

.navbar-brand .bi {
    font-size: 1.5rem; /* Larger icon */
    margin-right: 0.5rem;
}

/* Main Content Area */
main.container {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

/* Card Styling */
.card {
    border: none;
    border-radius: 0.75rem; /* More rounded corners */
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1); /* More pronounced shadow */
    overflow: hidden; /* Ensures rounded corners apply to children */
}

.card-header {
    background-color: var(--primary-color); /* Use Bootstrap primary for main card header */
    color: white;
    font-weight: 600;
    font-size: 1.25rem;
    border-bottom: none; /* Remove default border */
    padding: 1.5rem; /* More padding */
    display: flex;
    align-items: center;
    justify-content: center; /* Center content */
}

.card-header .bi {
    font-size: 1.75rem; /* Larger icons in card headers */
}

.card-body {
    padding: 2rem; /* More padding inside card body */
}

/* Form Elements */
.form-label {
    font-weight: 500;
    color: #495057;
    display: flex;
    align-items: center;
}

.form-label .bi {
    margin-right: 0.5rem;
    color: var(--primary-color); /* Icons match primary color */
}

.form-control, .form-select {
    border-radius: 0.5rem; /* Rounded form fields */
    padding: 0.75rem 1rem; /* More padding */
    font-size: 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--whatsapp-green);
    box-shadow: 0 0 0 0.25rem rgba(37, 211, 102, 0.25); /* WhatsApp green focus glow */
}

.form-text {
    font-size: 0.875rem;
    color: #6c757d;
}

/* Buttons */
.btn-primary {
    background-color: var(--whatsapp-green);
    border-color: var(--whatsapp-green);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease-in-out;
}

.btn-primary:hover {
    background-color: #1ebe57; /* Slightly darker green on hover */
    border-color: #1ebe57;
    transform: translateY(-2px); /* Slight lift effect */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-outline-secondary {
    border-color: #6c757d;
    color: #6c757d;
    transition: all 0.2s ease-in-out;
}

.btn-outline-secondary:hover {
    background-color: #6c757d;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Alert Messages (Flashed Messages) */
.alert {
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.5s ease-out; /* Fade in animation */
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Specific Card for Instructions/Tips */
.card-header.bg-info {
    background-color: var(--info-color) !important; /* Use Bootstrap info color */
}

.list-group-item {
    background-color: transparent; /* No background for list items */
    padding-left: 0; /* Remove default left padding */
    display: flex;
    align-items: flex-start;
    line-height: 1.5;
}

.list-group-item .bi {
    margin-right: 0.75rem;
    font-size: 1.1rem;
    flex-shrink: 0; /* Prevent icon from shrinking */
    margin-top: 0.2rem; /* Align icon with text */
}

/* Modal Styling */
.modal-header.bg-dark {
    background-color: #343a40 !important; /* Dark header for modal */
    color: white;
    border-bottom: none;
}

.modal-title .bi {
    font-size: 1.5rem;
}

.btn-close-white {
    filter: invert(1) grayscale(100%) brightness(200%); /* White close button for dark background */
}

.modal-body {
    color: #495057;
}

.modal-body .lead {
    font-size: 1.1rem;
    font-weight: 400;
}

.modal-body ul {
    margin-top: 1rem;
}

.modal-body .list-group-item {
    padding: 0.75rem 0;
    border-color: rgba(0, 0, 0, 0.05) !important; /* Lighter border for list items */
}

.modal-body code {
    background-color: #e9ecef;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9rem;
    color: #c22d2d; /* A distinct color for code snippets */
}

/* Footer Styling */
footer {
    background-color: #f1f1f1 !important; /* Lighter footer background */
    border-top: 1px solid #dee2e6;
    color: #6c757d;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }
    .card-header {
        padding: 1rem;
        font-size: 1.1rem;
    }
    .card-header .bi {
        font-size: 1.5rem;
    }
    .form-control-lg, .form-select-lg {
        padding: 0.6rem 0.8rem;
        font-size: 0.95rem;
    }
    .btn-lg {
        padding: 0.6rem 1.2rem;
        font-size: 0.95rem;
    }
}

/* Remove unused styles */
/* .whatsapp-icon, .loading, .loading.show, .spinner-border-sm, .template-preview, .template-preview h6, .template-preview p, .template-preview .badge are not directly used or are for dynamic content not handled by Flask backend */