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

body {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f3f6fb;
    color: #0b1b2b;
}

.register-page {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    padding: 3.5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.register-card {
    background: #ffffff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 22px 60px rgba(12, 26, 43, 0.12);
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.register-header img {
    height: 40px;
    margin-bottom: 1rem;
}

.register-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.register-header p {
    color: #5b6b7c;
}

.plan-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.plan-option {
    border: 1px solid #d7dee8;
    border-radius: 14px;
    padding: 1rem;
    background: #f8fafc;
    text-align: left;
    cursor: pointer;
    display: grid;
    gap: 0.35rem;
    font-weight: 600;
}

.plan-option strong {
    font-size: 1.1rem;
}

.plan-option small {
    color: #6b7c8f;
    font-weight: 500;
}

.plan-option.active {
    border-color: #35c98a;
    background: #ecfbf4;
    box-shadow: 0 8px 20px rgba(53, 201, 138, 0.15);
}

.register-form {
    display: grid;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    gap: 0.5rem;
}

label {
    font-weight: 600;
}

input {
    padding: 0.8rem 0.9rem;
    border-radius: 10px;
    border: 1px solid #d7dee8;
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: #35c98a;
    box-shadow: 0 0 0 2px rgba(53, 201, 138, 0.2);
}

.form-row small {
    color: #6b7c8f;
}

.form-message {
    display: none;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.95rem;
}

.form-message.error {
    display: block;
    background: #ffe8ea;
    color: #a1181f;
}

.form-message.success {
    display: block;
    background: #eaf9f1;
    color: #0f7a4a;
}

.btn {
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    border: none;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: #35c98a;
    color: #0b1b2b;
}

.btn-primary:hover {
    background: #23b277;
    color: #ffffff;
}

.payment-panel {
    display: none;
    flex-direction: column;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e6ef;
}

.payment-panel.active {
    display: flex;
}

.payment-note {
    color: #5b6b7c;
}

.register-footer {
    text-align: center;
    color: #5b6b7c;
    font-size: 0.95rem;
}

.register-footer a {
    color: #1565c0;
    font-weight: 600;
    text-decoration: none;
}

.register-aside {
    background: linear-gradient(120deg, #0b1b2b, #0f2740);
    color: #ffffff;
    padding: 2.5rem;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 22px 60px rgba(12, 26, 43, 0.18);
}

.register-aside h2 {
    font-size: 2rem;
}

.register-aside ul {
    list-style: none;
    display: grid;
    gap: 0.75rem;
    color: #d3deea;
}

.register-aside li::before {
    content: '✓';
    margin-right: 0.5rem;
    color: #35c98a;
}

.aside-highlight {
    background: rgba(255, 255, 255, 0.08);
    padding: 1.25rem;
    border-radius: 16px;
}

@media (max-width: 720px) {
    .register-page {
        padding: 2.5rem 1.5rem;
    }
}