* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #5a5a5a;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

nav {
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(100, 150, 200, 0.1);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

nav a {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #6496c8;
}

.container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.card {
    background: #2a2a2a;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    padding: 2.5rem;
    width: 100%;
    max-width: 450px;
    border: 1px solid rgba(100, 150, 200, 0.1);
}

h1, h2 {
    color: #e0e0e0;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #b0b0b0;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #3a3a3a;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
    background-color: #1f1f1f;
    color: #e0e0e0;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus {
    outline: none;
    border-color: #6496c8;
}

.btn {
    width: 100%;
    padding: 0.75rem;
    background: #6496c8;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn:hover {
    background: #5582b0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 150, 200, 0.3);
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
}

.alert-success {
    background-color: #1e4d2b;
    color: #a3d9a5;
    border: 1px solid #2d6a3e;
}

.alert-error {
    background-color: #4d1e1e;
    color: #f1a7a7;
    border: 1px solid #6a2d2d;
}

.link {
    text-align: center;
    margin-top: 1rem;
    color: white;
}

.link a {
    color: #6496c8;
    text-decoration: none;
}

.link a:hover {
    text-decoration: underline;
    color: #5582b0;
}

.requirements {
    background-color: #5f5f5f;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border: 1px solid #3a3a3a;
}

.requirements ul {
    margin-left: 1.5rem;
    color: #b0b0b0;
}

.requirements li {
    margin: 0.3rem 0;
}

/* Payment Page Styles */
.payment-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 60px);
    padding: 20px;
    background: linear-gradient(135deg, #232526 0%, #818385 100%);
}

.payment-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 450px;
    overflow: hidden;
}

.payment-header {
    background: linear-gradient(135deg, #1e3c72 0%, #3a67ad 100%);
    color: white;
    text-align: center;
    padding: 40px 30px;
}

.payment-header .form-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.payment-header h1 {
    margin: 0 0 10px 0;
    font-size: 28px;
    font-weight: 600;
}

.payment-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 14px;
}

.payment-body {
    padding: 30px;
    text-align: center;
}

.payment-message {
    font-size: 15px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.payment-icon {
    display: block;
    text-align: center;
    font-size: 64px;    /* optional: make icon bigger */
    color: #1e3c72;  /* optional: match your theme */
}

.price-text {
    color: #189f55;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}