/* Basic Reset / Defaults */
* { 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; }
/* Sections */
.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: 1rem; border-bottom: 2px solid #eee; padding-bottom: 0.5rem; }
.content-section ul { list-style: disc; margin-left: 20px; margin-bottom: 1rem; }
.content-section li { margin-bottom: 0.5rem; }
/* Header */
header { background: #333; color: #fff; padding: 1rem 0; text-align: center; border-bottom: 4px solid #007bff; }
header h1 { margin-bottom: 0.2rem; }
/* Main */
main { flex-grow: 1; padding: 2rem 1rem; }
/* Footer */
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; }
/* Buttons */
.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; }
/* Forms */
.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 */
.seo-text { margin-top: 2rem; font-size: 0.9em; color: #666; background-color: #f0f0f0; padding: 1rem; border-radius: 5px; text-align: center; }
/* Loading / Error */
.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; }
/* Responsive */
@media (max-width: 768px) { main { padding: 1.5rem 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[type="text"], .form-group input[type="email"], .form-group textarea { font-size: 0.9rem; } .btn { padding: 8px 15px; font-size: 0.9rem; } }