.register-container {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: #f5f5f5;
}

.register-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 480px;
    padding: 40px;
}

.register-header {
    text-align: center;
    margin-bottom: 32px;
}

.register-header h1 {
    font-size: 2rem;
    color: #2d3748;
    margin-bottom: 8px;
    font-weight: 600;
}

.register-header p {
    color: #718096;
    font-size: 1rem;
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.form-row {
    display: flex;
    gap: 12px;
    width: 100%;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.form-group label {
    font-weight: 500;
    color: #2d3748;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input {
    box-sizing: border-box;
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: #ffffff;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input:hover {
    border-color: #cbd5e0;
}

.form-group input.error {
    border-color: #e53e3e;
}

.form-errors {
    background-color: #fed7d7;
    border: 1px solid #feb2b2;
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 8px;
    color: #c53030;
    font-size: 0.9rem;
}

.field-error {
    color: #e53e3e;
    font-size: 0.85rem;
    margin-top: 6px;
    font-weight: 500;
}

.btn-register {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 14px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
}

.btn-register:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.btn-register:active {
    transform: translateY(0);
}

.register-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.register-footer p {
    color: #718096;
    font-size: 0.9rem;
}

.register-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.register-footer a:hover {
    text-decoration: underline;
}

.error-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(4px);
}

.error-box {
    background: white;
    border-radius: 16px;
    padding: 40px;
    max-width: 420px;
    margin: 20px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid #e2e8f0;
}

.error-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #fc8181 0%, #e53e3e 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 600;
    margin: 0 auto 24px;
    box-shadow: 0 4px 12px rgba(229, 62, 62, 0.3);
}

.error-box h2 {
    color: #2d3748;
    font-size: 1.75rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.error-box p {
    color: #4a5568;
    font-size: 1.05rem;
    line-height: 1.6;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .register-container {
        padding: 16px;
        min-height: calc(100vh - 60px);
    }

    .register-card {
        padding: 32px 24px;
    }

    .register-header h1 {
        font-size: 1.75rem;
    }

    .form-row {
        flex-direction: column;
        gap: 12px;
    }

    .form-group input {
        padding: 14px 16px;
    }

    .btn-register {
        padding: 16px 24px;
    }
}

@media (max-width: 480px) {
    .register-container {
        padding: 12px;
    }

    .register-card {
        padding: 24px 20px;
    }

    .register-header h1 {
        font-size: 1.5rem;
    }

    .form-group input {
        padding: 12px 14px;
    }
}