.register-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 90px - 200px);
    padding: 2rem 1rem;
}

.register-card {
    max-width: 450px;
    width: 100%;
    padding: 3rem;
    background: var(--bg-white);
    border-radius: 1.25rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.register-header {
    text-align: center;
    margin-bottom: 2rem;
}

.register-icon {
    width: 64px;
    height: 64px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.register-icon i {
    font-size: 2rem;
    color: var(--primary);
}

.register-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-dark);
}

.register-header p {
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-light);
    border: 1.5px solid var(--border);
    border-radius: 0.75rem;
    color: var(--text-dark);
    outline: none;
    font-size: 1rem;
    transition: all 0.3s;
    box-sizing: border-box;
}

.form-input:focus {
    border-color: var(--primary);
    background: var(--bg-white);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.code-container {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.4rem 0.4rem 0.4rem 1rem;
    background: var(--bg-light);
    border: 1.5px solid var(--border);
    border-radius: 0.75rem;
    transition: all 0.3s;
    box-sizing: border-box;
}

.code-container:focus-within {
    border-color: var(--primary);
    background: var(--bg-white);
}

.code-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-dark);
    font-size: 1rem;
    letter-spacing: 2px;
    height: 100%;
    min-width: 0;
}

.code-btn {
    white-space: nowrap;
    padding: 0.6rem 1.2rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
    margin-left: 0.5rem;
    flex-shrink: 0;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    padding: 1rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .register-container {
        min-height: calc(100vh - 70px - 150px);
        padding: 1rem;
    }

    .register-card {
        padding: 2rem 1.5rem;
    }

    .register-icon {
        width: 56px;
        height: 56px;
    }

    .register-icon i {
        font-size: 1.75rem;
    }

    .register-header h2 {
        font-size: 1.5rem;
    }

    .register-header p {
        font-size: 0.9rem;
    }

    .form-input {
        padding: 0.75rem 0.875rem;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }

    .code-container {
        flex-wrap: wrap;
        padding: 0.5rem;
        gap: 0.5rem;
    }

    .code-input {
        width: 100%;
        padding: 0.5rem;
        font-size: 16px;
    }

    .code-btn {
        width: 100%;
        margin-left: 0;
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    .register-card {
        padding: 1.5rem 1.25rem;
    }

    .register-header h2 {
        font-size: 1.35rem;
    }

    .form-label {
        font-size: 0.85rem;
    }
}