/* --- Existing styles from previous Land Converter --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; background-color: #f9f9f9; display: flex; flex-direction: column; min-height: 100vh; }
.content-section, .tool-section { background-color: #fff; padding: 2rem; margin-bottom: 2rem; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); max-width: 960px; width: 100%; margin-left: auto; margin-right: auto; }
.content-section h2, .tool-section h2 { color: #0056b3; margin-bottom: 1.5rem; border-bottom: 2px solid #eee; padding-bottom: 0.5rem; text-align: center; }
header { background: #333; color: #fff; padding: 1rem 0; text-align: center; border-bottom: 4px solid #007bff; }
header h1 { margin-bottom: 0.2rem; }
main { flex-grow: 1; padding: 1rem; position: relative; /* Needed for absolute positioning inside */ }
footer { background: #333; color: #ccc; text-align: center; padding: 1.5rem 1rem; margin-top: auto; }
.footer-nav ul { list-style: none; padding: 0; margin-bottom: 1rem; }
.footer-nav li { display: inline-block; margin: 0 10px; }
.footer-nav a { color: #ccc; text-decoration: none; transition: color 0.3s ease; }
.footer-nav a:hover, .footer-nav a:focus { color: #fff; text-decoration: underline; }
.footer-buttons { margin-bottom: 1rem; }
.btn { margin: 0.5rem; padding: 10px 20px; text-decoration: none; border: none; border-radius: 5px; cursor: pointer; font-size: 1rem; transition: background-color 0.3s ease, color 0.3s ease, opacity 0.3s ease; display: inline-block; text-align: center; }
.btn-primary { background-color: #007bff; color: #fff; }
.btn-primary:hover, .btn-primary:focus { background-color: #0056b3; color: #fff; }
.btn-secondary { background-color: #6c757d; color: #fff; }
.btn-secondary:hover, .btn-secondary:focus { background-color: #5a6268; color: #fff; }
.btn.disabled, .btn:disabled { background-color: #aaa; cursor: not-allowed; opacity: 0.7; }
footer p { font-size: 0.9rem; }
footer a { color: #00aaff; text-decoration: none; }
footer a:hover { text-decoration: underline; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #555; }
.form-group input[type="text"], .form-group input[type="email"], .form-group textarea { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; }
.form-group textarea { resize: vertical; min-height: 100px; }
#contactForm .btn-primary { padding: 12px 25px; }
.seo-text { margin-top: 2rem; font-size: 0.9em; color: #666; background-color: #f0f0f0; padding: 1rem; border-radius: 5px; text-align: center; }
.loading { text-align: center; padding: 1rem; color: #0056b3; font-weight: bold; }
.error { color: #dc3545; background-color: #f8d7da; border: 1px solid #f5c6cb; padding: 0.8rem; border-radius: 5px; margin-top: 1rem; text-align: center; display: none; }

/* --- New Popup Styles --- */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5); /* Semi-transparent background */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000; /* Ensure it's on top */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}
.popup-overlay.visible {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease;
}

.popup-content {
    background-color: #fff;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    position: relative;
    max-width: 90%;
    width: 400px;
}
.popup-content p {
    margin: 0;
    font-size: 1.1em;
    color: #333;
}

.popup-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.8em;
    line-height: 1;
    color: #aaa;
    cursor: pointer;
    padding: 0;
}
.popup-close:hover {
    color: #333;
}

/* --- Install Banner Styles --- */
.install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
    z-index: 999;
    font-size: 0.95em;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.install-banner.visible {
    opacity: 1;
    transform: translateY(0);
}

.btn-install {
    background-color: #fff;
    color: #007bff;
    padding: 5px 15px;
    border-radius: 4px;
    font-weight: bold;
    margin-left: 15px;
    border: 1px solid #007bff;
    font-size: 0.9em;
}
.btn-install:hover {
    background-color: #eee;
}

.install-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.5em;
    line-height: 1;
    cursor: pointer;
    padding: 0 5px;
}
.install-close:hover {
    color: white;
}


/* Responsive */
@media (max-width: 768px) { main { padding: 1rem 0.5rem; } .content-section, .tool-section { padding: 1.5rem; } header h1 { font-size: 1.8rem; } }
@media (max-width: 480px) { header h1 { font-size: 1.5rem; } .footer-nav li { display: block; margin: 5px 0; } .footer-buttons .btn { display: block; width: 80%; margin: 0.5rem auto; } .form-group input, .form-group textarea { font-size: 0.9rem; } .btn { padding: 8px 15px; font-size: 0.9rem; } .popup-content { width: 90%; padding: 20px; } .install-banner { font-size: 0.9em; padding: 8px 15px; } .btn-install { padding: 4px 10px; } }