.form-title {
    margin-top: 40px;
    margin-bottom: 30px; 
    text-align: center;
    color: var(--primary-color);
    font-size: 2rem; 
    font-weight: 700;
}

.card-form, .login-form { 
    max-width: 650px; 
    margin: 0 auto;
    padding: 35px; 
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 6px 20px var(--shadow-medium);
}

.form-group {
    margin-bottom: 25px; 
}

.form-group label {
    display: block;
    margin-bottom: 10px; 
    font-weight: 700; 
    color: var(--primary-color);
    font-size: 1.05rem; 
}

.form-group input[type="text"],
.form-group input[type="date"], 
.form-group input[type="file"],
.form-group input[type="password"], 
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select { 
    width: 100%;
    padding: 14px; 
    border: 1px solid var(--border-color);
    border-radius: 8px; 
    font-size: 1.05rem; 
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background-color: var(--card-bg); 
    color: var(--text-color);
}

.form-group input[type="text"]:focus,
.form-group input[type="date"]:focus,
.form-group input[type="file"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="tel"]:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.2); 
    outline: none;
}

.btn-submit {
    display: block;
    width: 100%;
    padding: 16px; 
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 8px; 
    font-size: 1.15rem; 
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 10px var(--shadow-light); 
    margin-top: 20px; 
    display: flex; /* Added for spinner */
    justify-content: center; /* Added for spinner */
    align-items: center; /* Added for spinner */
}

.btn-submit:hover {
    background-color: var(--accent-dark); 
    transform: translateY(-3px); 
    box-shadow: 0 6px 15px var(--shadow-medium); 
}

.payment-section {
    margin-top: 25px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--background-color); 
}

.payment-section h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 15px;
    text-align: center;
}

#card-element {
    border: 1px solid var(--border-color);
    padding: 14px;
    border-radius: 8px;
    background-color: var(--card-bg);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#card-element.StripeElement--focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.2);
}

.error-message {
    color: #fa755a;
    font-size: 0.9rem;
    margin-top: 10px;
    text-align: center;
}

.note-text {
    text-align: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

/* Spinner style */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #fff;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    display: inline-block;
    vertical-align: middle;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}