body { 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    background: linear-gradient(135deg, #00cee9 0%, #1558d4 100%); 
    margin: 0; 
    padding-top: 80px; 
    padding-left: 20px; 
    padding-right: 20px; 
    padding-bottom: 20px; 
    min-height: 100vh;
}

.navbar {
    position: fixed; 
    top: 0; 
    left: 0; 
    right: 0; 
    background: white; 
    padding: 10px 20px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
    z-index: 1000; 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
}

.navbar h1 {
    margin: 0; 
    color: #007cba;
}

.navbar h1 a {
    color: #007cba;
    text-decoration: none;
}

.navbar h1 a:hover {
    color: #005a87;
}

.navbar a {
    margin: 0 5px; 
    padding: 8px 16px; 
    color: white; 
    text-decoration: none; 
    border-radius: 5px;
}

.navbar .game-btn {
    background: #007cba;
}

.navbar .study-btn {
    background: #28a745;
}

.container { 
    display: flex; 
    gap: 20px; 
    max-width: 1800px; 
    margin: 0 auto; 
}

#map { 
    height: 600px; 
    width: 70%; 
}

#info-panel { 
    width: 30%; 
    background: white; 
    padding: 20px; 
    border-radius: 8px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
}

#refresh-btn, #learn-btn { 
    margin-top: 15px; 
    padding: 10px 20px; 
    background: #007cba; 
    color: white; 
    border: none; 
    border-radius: 5px; 
    cursor: pointer;
    width: 100%;
    display: block;
}

#refresh-btn:hover, #learn-btn:hover { 
    background: #005a87; 
}

#refresh-btn:disabled { 
    background: #ccc; 
    cursor: not-allowed; 
}

#learn-btn {
    background: #28a745;
    margin-top: 10px;
}

#learn-btn:hover {
    background: #218838;
}

#selection { 
    font-size: 1.2em; 
    margin: 20px 0; 
    color: #333; 
    text-align: center; 
}

#coordinates {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255, 255, 255, 0.8);
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.9em;
    color: #333;
}

.custom-marker { 
    background: none; 
    border: none; 
}

/* Login Page Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding: 20px;
}

.login-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-header h2 {
    color: #007cba;
    margin: 0 0 8px 0;
    font-size: 1.8em;
    font-weight: 600;
}

.login-header p {
    color: #666;
    margin: 0 0 30px 0;
    font-size: 0.95em;
}

.login-form {
    text-align: left;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: #333;
    font-weight: 500;
    font-size: 0.9em;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: #007cba;
    box-shadow: 0 0 0 3px rgba(0,124,186,0.1);
}

.form-group input::placeholder {
    color: #999;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: #007cba;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    background: #005a87;
}

.login-footer {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #e1e5e9;
}

.login-footer p {
    margin: 0;
    color: #666;
    font-size: 0.9em;
}

.register-link {
    color: #007cba;
    text-decoration: none;
    font-weight: 500;
}

.register-link:hover {
    color: #005a87;
    text-decoration: underline;
}

/* Authentication Page Styles */
.auth-message {
    text-align: center;
    padding: 20px;
}

.auth-message h2 {
    margin: 0 0 15px 0;
    font-size: 1.5em;
}

.auth-message p {
    color: #666;
    margin: 0;
    font-size: 1em;
}